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This document is a one-page compilation of the on-device userguide intended for printing out for use as a reference.

Tasker Userguide

Main Screen

This is the first screen shown when you startup Tasker. It allows you to organize and configure Tasker's four main 'building blocks': Profiles, Tasks, Scenes and Variables.

Main Tabs

  • Click on a tab to view a list of the relevant things
  • Long-click on a tab to get options

Profiles

Each item in the list represents a profile. The profile links contexts (conditions) on the left to tasks which should be run on the right. The profile name is green if the profile is active. There are three main parts to each profile.

1. Title Bar

This shows the profile name (or description if it has no name) and the check-mark icon on the right shows whether the profile is enabled or not.

  • Click on the name to expand / collapse the profile. When expanded, the contexts and tasks (described below), are visible.
  • Long-click on the profile name to get profile options
  • Click on the check-mark icon to toggle whether the profile is enabled or not.
  • Click-and-drag the area at the right side of the title bar drag it around. Note that the enable icon can also be used for dragging.

Important: the check-mark does not mean the profile is active (will run its tasks), it means that the profile can become active if its conditions are met.

2. Contexts

On the left hand side of the profile are an icon and text for each context in the profile. The contexts dictate when the profile should become active. When all contexts are active then the profile will be active.

  • Click on the context to edit it
  • Long-click to show management options, such as editing or adding a new context

You can configure what clicks and long-clicks on contexts do in Menu / Prefs / UI.

3. Tasks

On the right hand side of the profile are one or two tasks to carry out based on its activation status.

  • Click on the task to edit it
  • Long-click to show management options.

A task indicated with a green, right-pointing arrow is an entry task, executed when the profile first becomes active.

A task indicated with a red, left-pointing arrow is an exit task, executed when the profile becomes inactive again.

Exception: a profile containing an event context or a repeating or non-ranged time context has two green arrows, to denote that both tasks are executed immediately because the profile activation and deactivation is instantaneous.

Tasks

The task list shows the named
tasks which have been created.
  • Click on a task to edit it
  • Long-click for options
  • Click-and-drag at the right hand side to drag the task (e.g. to the trash bin)

Note that a profile can be assigned an anonymous task (one without a name) which is not accessible in the task list, only via the relevent profile in the profile list.

Scenes

The scene list shows the
scenes which have been created.
  • Click on a scene to edit it
  • Long-click for options
  • Click-and-drag at the right hand side to drag the scene (e.g. to the trash bin)

Scenes marked with a star icon have been created but may be visible or invisible.

Variables

The Variables tab is not shown if Menu / Prefs / UI / Beginner Mode is enabled.

By default, all global user-variables that Tasker knows about are listed, which includes any that have a value set or are mentioned somewhere in a profile or task.

  • Click on a variable to edit it
  • Long-click for options

Note that variables whose names are all lower-case are local variables and not shown because they are only valid within the task that refers to them.

At the bottom of the variable list is an upwards-pointing faded arrow. It can be dragged up to show variable filter controls.

  • Indexed (button)
    includes variables whose names end in a number e.g. %LOC3, otherwise they are excluded.
  • Empty (button)
    includes variables which have currently have no value assigned, deselect to show only variables that have a value.
  • Referenced (button)
    includes variables which are referenced in profiles or tasks.
    Deselect to show 'orphan' variables.
  • Filter (textbox)
    excludes variables which don't contain the specified text somewhere in their name (case-sensitive)

Unlike most screens in Tasker, changes made in the variable list cannot be cancelled.

Bottom Controls

Cancel Button
Discard all changes to user data that have been made since starting the Tasker UI.
Accept Button
Apply the changes that have been made since last starting the Tasker UI. Pressing the Back hardware button has the same effect. Home has the same effect unless a dialog is showing.
Plus Button

Create a new Profile, Task, Scene or Variable, depending on the current tab.

On/Off Toggle
Tasker does not do anything when you leave the user inteface, unless this button is set to On (green light showing). When you set it to off, Tasker's event monitor is immediately stopped if it was previously running.

Projects

Tasker allows organisation of profiles, tasks, scenes and variables into groups called Projects, each with a separate Project Tab.

The projects tabs are accessed by dragging entity tabs down via the faded arrow just underneath them. Drag the other way to hide them.

If no arrow is there, you probably need to disable Menu / Prefs / UI / Beginner Mode.

  • Click-and-drag a profile, task or scene to a project tab to move it to that project
  • Click on a project tab to switch to viewing only things in that project
  • Long-click on a project tab for options, including adding a new tab

The first tab has a slightly special status, it cannot be removed and anything which is not a member of another project is placed there.

Menus

Menu Item: Browse Solutions

Links to websites with projects, profiles etc offering solutions for common problems. Important: once downloaded you need to import the file into your active user data. For example, profiles are imported by long-clicking the profile tab and selecting Import.

Menu Items: Data

Clear
Removes all data that has been created to that point. Does not remove preferences (use Menu / Preferences and click Defaults for that) or variables (long-click on the Variables tab for that).
Backup
Saves the existing user data to a backup file on the SD card (if present). The file is /sdcard/Tasker/userbackup.xml.
Restore
Replaces the existing profile configuation with that from the SD card.

Application Context

An Application Context is activated when the selected application is running in the foreground and deactivated otherwise.

The button in the bottom right indicates whether the context is inverted or not. If the button is lit-up, this context will become active when any application apart from the selected one is launched.

Application Checking

When any profiles have application contexts specified, Tasker checks frequently to see if one of those applications has been launched. The default is every 1.5 seconds.

If you would like quicker response, or you suspect this is severely increasing your battery usage, you can change this value in preferences (select Menu / Preferences / Monitor from the main screen).

Time Context

A Time Context specifies a particular range, or one (or more) points in time. There are three major components in the selection dialog, one of which must be selected (by enabling its checkbox on the left):

  • From Time: the starting time of the range. If it's not specified, 00:00 is assumed.
  • To Time: the end time of the range. If it's not specified, 11:59 is assumed.
  • Repeat: if no repeat is selected, the context is assumed to be a continuous range which starts at From Time and ends at To Time. If a repeat is specified, the first occurrence is at From Time and then every X hours or minutes until End Time.

Notes:

  • to specify a precise time, set From and To times the same. In that case, the context is treated as an instant event, it it only active for a fraction of a second, so no setting restoration is done.
  • each repeat (if Repeat is set) is also treated like an instant event.

Day Context

A Day Context allows specification of one or more months and/or days of the week/month.

Month Specification

The months are listed at the top, any of which can be selected. Selecting no month has the same meaning as selecting every month i.e. has no restriction on when the profile will become active.

Day of Week/Month Specification

Days of the week (Sunday, Monday etc) and/or month (1st, 9th etc) can be selected independently with the pulldown centre-right. This will initially be for Week Days if there are any defined, otherwise Month Days.

Selecting no day has the same meaning as selecting every day.

If you select both days of the week and days of the month, it requires both conditions to be fulfilled for the profile to become active e.g. selecting Mon,Tue and 11th means the profile will become active when the day is a Mon or Tuesday and simultaneously the 11th day of the month.

If you are unsure if you have specified the day(s) you require, click the Done button and you will see a verbal description at the top of the Profile Edit screen. You can click on this to try again if it's not correct.

Location Context

A location context specifies a circular geographical area in which it is active. It is formed by a centre point (latitude, longitude) plus a radius around that point.

Location Providers

A location provider is a method of supplying geographical coordinates. Tasker must use one or more location providers to be able to decide when a location context should become active or inactive.
GPS

The most accurate provider available (around +-10m), but its performance degrades quickly indoors and it uses a relatively large amount of power.

To set the frequency of GPS fixes, see Menu / Preferences / Monitor. GPS Check Time determines the check frequency in seconds while the device is awake, Off Check Time while the device is asleep.

GPS will only be used for a particular context if it is specified in the location edit screen.

Network
This provider uses a combination of cell-towers and WiFi information (if wifi is enabled) to determine the device's geographical location. It is less power-hungry than GPS, but also less accurate (sometimes +- several kilometres) and requires data network availability.

Network will only be used for a particular context if it is specified in the location edit screen.

See also:

Location Edit

This screen allows configuration of a
Location Context.

Map Display

The map shows:
  • The location (base of the flag icon) and names of all defined location contexts
  • The radius of the location currently being defined (the inner circle)

Location contexts other than the one currently being defined have a small fixed-radius bluish base.

Map Controls

Use a long-click on the map to select a location for this context.

Use the pull-down selector under the map to specify the radius for this context.

Important: if your radius is too small compared to the accuracy of the fixes you are receiving, your context may never go active. If you can't get a fix, try increasing the radius. Typically, a good radius would be around twice the accuracy of the fixes you are receiving.

Tap on the map to bring up zoom controls and buttons to enable the Satellite Overlay (left) and Street View (right). Note that the Street View sometimes does not update until the map is dragged slightly.

If you have no internet available in order to retrieve the map tiles, you can still use the Get Fix button (see below) to specify your current location.

Bottom Buttons

Net Button
The Net toggle button specifies whether to use the Network location provider to monitor for this location
GPS Button
The GPS toggle button specifies whether to use GPS to monitor for this location (assuming it is available on the device). If GPS is not used, the network will need to be available in order to query for location fixes based on cell-towers or WiFi data.
Get Fix Button

Acquires a location fix using the enabled and available providers (make sure the GPS Button is clicked first if you want to use GPS).

Once a fix is acquired, the latitude, longitude and radius of this location context are set according to it. If you reduce the radius after a fix, Tasker may no longer accurately detect whether you are in or out of the context.

When trying to determine current location, Tasker will keep going with fixes until they stop improving (e.g. as the GPS locks on to more satellites). If you get impatient you can press the Get Fix button again to stop the process (its label is changed to Stop while a fix is being acquired).

State Context

A State Context allows specification of the continuing state of a software or hardware entity.

The State Edit screen allows configuration of the state and its parameters.

State Name

The name of the state is given at the top of the screen. Clicking on it allows changing to another state type.

Next to the name is a button to show help for the displayed state type and its parameters. Be sure to check the help text if you have trouble with a particular state.

State Parameters

General Parameters
All states have parameters to specify more details about the state.

Text parameters are treated as pattern matches.

Invert Parameter
All states have an invert parameter, which specifies that the context should become active when it would usually be inactive, and vice-versa.

Event Context

An Event Context allows specification of an event which is needed to activate its profile e.g. SMS received, screen has gone off.

Events are a little different to other contexts because they are instantaneous whereas other contexts usually have a duration.

This means that it is nonsensical to specify that e.g. the screen brightness should be set to X for the duration of the event, so Tasker assumes that all settings actions should persist beyond the event.

For more information about specifying events, see the Event Edit screen.

Event Parameters

When a task is triggered by an event, the parameters of the event that ocurred are passed to the task so that it can make decisions based on the event details.

The parameters are passed in the array %evtprm.

The order of elements of the array have values which match the order of the parameters of the event.

Example: if an event's second parameter is an Application, %evtprm2 in the launched task will be set to the label of the application which triggered the event.

Event Edit

This screen allows configuration of an
Event Context.

Event Name

The name of the event is given at the top of the screen. Clicking on it allows changing to another event type.

In the top right is a button to show help for the displayed event type.

Priority

Only present for relevant events.

Selects the priority at which this event will be detected. An event can be processed by other Tasker Profiles, other installed applications and system processes.

If priority is high, then this profile will be more likely to detect the event before other processes, and vice versa.

Stop Event

Only present for relevant events.

If checked, then once this profile has dealt with the event, other user or system applications will no longer be able to see it.

You can achieve different effects by combining Priority and Stop Event. For instance, if you want to show a Tasker menu when the camera button is pressed, you would set Priority High and check the Stop Flag, because you do not want the camera application to appear afterwards.

Event Parameters

Some events have paramaters to specify more details about the event. To get help on particular parameters, click the question-mark icon at top right.

Text parameters are treated as pattern matches.

If you would like to make more complex comparions (e.g. mathematical expressions), leave the event parameter blank and instead put a condition on the first action of the task you execute with the profile.

Tasks

A task is simply a set of actions which are performed one after the other.

Named / Anonymous Tasks

A task can be given a name. This allows:

When creating a profile, widget or shortcut, often the associated task will consist only of one or two actions which will not be reused. For this case, Tasker allows you to create a task without a name (an Anonymous task).

Task Visibility

Anonymous tasks are only visible when editing the profile that they are associated with.

Named tasks are visible on any screen that allows task editing. Any changes made to the set of tasks in any screen is reflected in all the other screens.

Task Icon

Each task has an associated icon, by default a question mark. The icon is used

Deleting Tasks

Named tasks can only be deleted via the Delete button on the Task Edit screen. Unnamed tasks are deleted automatically when the profile they are part of is deleted, or a named task is selected for that profile.

Named tasks cannot be deleted while a profile still refers to them.

When a task is deleted that is referred to by a previously created named widget or task, the widget will stop working.

Android does not allow Tasker to automatically remove the widget from the Home Screen.

Task Scheduling

When there is a single task waiting to be executed, it's actions are executed one-by-one until finished.

When there are several tasks in the queue at once, it's important to understand how they are handled:

  • only one action from the same action group can be executed at once to prevent interference
  • the task in the queue with the highest priority goes first and blocks lower priority tasks
  • tasks with the same priority take turns executing an action each, starting with the most recent addition to the queue

Task priority, 0 to 10 inclusive with 0 being lowest, is determined according to whatever causes the task to run.

  • tasks run by profiles have the priority specified in Profile Properties, the default is 5
  • tasks run by widgets or shortcuts can be set in Menu / Prefs / Action, the default is 7
  • tasks run from scene elements have priority one more than the task which showed the scene
  • tasks run from the Test button in the task edit screen have priority 10

A couple of guidelines are:
  • if you want a particular task to always interrupt other tasks that may be executing, give it a high priority
  • if you have a task that lasts for a while, you probably want to give it a low priority so it doesn't block other tasks from being executed.

Action Groups

Actions are divided into groups for scheduling based on how long the action takes to execute and what it interferes with:
  • Speech: Say, Say To File
  • Javascript: Javascript
  • Fix: Get Location
  • Voice: Get Voice
  • Proxy: Display Brightness, Query Action, Photo, Photo Series, Photo Series Time
  • Proxy Scene Enter Key, Menu, Popup, Popup Task Buttons, Variable Query
  • Other Scenes: the name of the scene being shown
  • Normal: all other actions

Wait Actions

Wait and Wait Until are special cases. The rules for handling them are complicated and try to do the 'best thing' dependent on the situation.

Same-Profile Tasks

Tasks launched by the same profile by default always execute in the order in which they are launched. Other tasks from the same profile remain completely inactive until any previous task from the same profile is complete. The main purpose of this rule is to correctly handle rapid changes in a profile's activation state.

This behaviour can be disabled by deselecting Enforce Task Order in the Profile Properties dialog.

Example
This example demonstrates the effect of Enforce Task Order and shows also how sub-tasks launched by Perform Task are handled.
Profile: Example
Enter Task: Enter1
   Perform Task, Enter2
Exit Task: Exit1
   Perform Task, Exit2
With Enforce Task Order:

Enter1 and Enter2 are both guaranteed to finish before either of Exit1 or Exit2. Whether Enter1 or Enter2 finishes first depends on their relative priority. Same for Exit1 and Exit2. All 4 tasks compete based on priority against tasks from other profiles. Exit tasks have a higher base priority so will finish before Enter tasks.

Without Enforce Task Order:

If the profile goes active and inactive quickly, Enter1, Enter2, Exit1 and Exit2 will all compete purely on priority. Since Exit tasks have higher base priority, Exit1 and Exit2 will probably finish first.

Collisions

Sometimes a task needs to be executed of which a copy is already executing. This can happen quite often e.g. when a task widget button is pressed twice quickly, or a task contains a Wait action or shows a dialog.

The way in which a collision is resolved is specified by the user. There are 3 options:

  • the new task is ignored (the default)
  • the existing task is aborted and the new one starts from its first action. The current action of the previous task is finished if it is already being carried out.
  • both tasks run simultaneously

Note that the last option can lead to several copies of a task all running at once.

Behaviour When Device Off

By default, after a few seconds of the screen being off Android will power down the device and thus running tasks will be paused.

In the Task Properties dialog, it can be specified that a task should keep running.

Dialogs
An action that shows some kind of dialog (such as a lock screen, popup, menu) blocks execution of any other action, even one of higher priority, until it is completed.
Wait / Wait Until
These are exceptions. A wait action can be interrupted by another task's action and will resume (if necessary) when the other task's action is finished.

Killing Tasks

If you have a problem with a task that never ends, you can manually end tasks with the Kill button in the Task Edit screen.

Task Edit

This dialog allows editing and deletion of a task.

Action List

The main part of the screen is a list of the actions contained in the currently selected task.
  • Click on an action to edit it
  • Long-click on an action for options
  • Click-and-drag at the right hand side of the action to move it around e.g. to the trash bin

On the right of each action is an icon stipulating whether the action is a setting or not. See here for more information.

Condition and Block Colours

If an action has had a condition set for it, the condition is shown with a red or green bar next to it; green indicates that the condition is currently met (the action will execute), red indicates the opposite. Of course, when the task is executed it could be that it changes things so that the condition is then met.

If an action is within an If / End If block it is displayed indented with a red or green margin. The colours have the same significance as for individual action conditions described above.

If an action is within a For loop it is displayed indented with a grey margin. If the For action has a condition on it which is not met, the margin will be red (because the actions in the loop will never execute, like an If / End If block).

Task Control Row

Directly underneath the action list is a row of buttons with icons.
  • Add Action: add an action on the end of the task.
  • Task Properties: show extended properties for the task.
  • Task Icon button: shows the icon associated with the task. Clicking on it allows changing of the icon.

Bottom Row Buttons

Test Button

Run the task. Be aware that if the Task e.g. loads another activity, you must return to Tasker and press save otherwise all changes made while in the Task Edit screen will be lost.

Tasks run via the Test button have priority 10.

Kill Button
This button in the bottom right will stop all running tasks. It is not displayed if there are no running tasks.

Menu Items

Action Labels
Toggle display of action labels (which are specified in the Action Edit screen).
Param Names
Toggle display of the name of each action parameter.
Icons
Toggle display of the setting/action indicator icon for each action.

Action Edit

This screen allows configuration of a single action in a Task.

General

At top left is the name of the action. Tapping on this allows it to be changed.

Bottom-right is a help button. Please be sure to read the action help of every action before you use it for the first time, there may be e.g. device specific restrictions you should know about.

Action Parameters

A parameter gives extra detail about how the action is to be carried out.
Text Parameters
Numeric Slider Parameters
Clicking the arrows icon next to numeric sliders allows you to specify the number textually or use a variable for the parameter instead, if the value will not be known until the action is actually executed.
If (Condition) Parameter
(most actions)

Allows specification of a condition which must match if this action is to execute.

Please see the section on Flow Control for more information.

Continue Task After Error Parameter
(selected actions only)

By default, if an action fails with an error (e.g. the user specified to delete a file that doesn't exist) Tasker will stop the task immediately and the remaining actions will never be executed.

This parameter specifies that the task should continue even if this action fails.

In addition, if it's checked, errors will be logged in the system log as diagnostics instead of errors and error popups will be surpressed.

Label Parameter
(all actions)

A label for the action which is shown on the Task Edit screen. This parameter could also be used to add comments to actions to help understand how the task works.

Labels are also used with Goto actions to jump from one part of the task to another.

Scenes

Introduction

A scene is a graphical user-interface consisting of a collection of elements to which tasks can be attached to be run when the user interacts with them e.g. by tapping them.

Tasker uses scenes for things like popup dialogs, menus and getting input from the user but scenes can actually be displayed by the user whenever desired, meaning they can be used for things like creating simple user-designed applications or showing extra controls over the top of (selected) existing applications.

Scenes are completely user-customisable via a drag-and-drop graphical editor.

Displaying Scenes

Actions: Enter Key, HTML Popup, Lock, Menu, Popup, Popup Task Buttons and Variable Query

These actions use a built-in scene with the same name as their action. After creating a task with such an action, the associated scene can be found under the Scenes tab on the main Tasker screen. That scene can be edited so that e.g. all Popup actions have the same style because they all use the same scene.

The parameters specified in the action are applied to the scene before it is show. For instance, if the scene has a Title element it will be set to the title specified in the action and the scene resized appropriately.

It might be desirable to have a different style for e.g. some Popup actions, in which case:

  1. clone the built-in scene long-clicking on it in the Scenes tab
  2. edit the clone to change the contents
  3. in a Popup action, specify that the cloned scene should be used by clicking on the Layout parameter in the action edit screen.

Scene Category Actions: Create Scene, Show Scene, Hide Scene, Destroy Scene

These allow a completely free hand over when a scene should be displayed and it's life-cycle. They all act on scenes pre-designed in the Scenes tab.

Usually, only Show Scene and Destroy Scene will be used, however sometimes it's useful for a scene to be created but not visible to the user:

  • by hiding a scene instead of completely destroying it, the settings of the elements are retained for next time it is shown
  • the values of the elements in the scene can be changed to track certain events so that the scene can be immediately displayed when required without any configuration

Scene Elements

Each scene is comprised of a number of elements.

An element has three main components:

Geometry

It's size and position on the screen. An element's geometry is specified in the scene editor.

Content

How it looks on the screen.

Specified under the UI tab in the element editor. Some elements also have a Background tab. A Menu element has an additional Items tab.

Event Tasks

What should happen when the user interacts with the element.

Specified under the right-most tabs after clicking on the element in the element editor. There are different events depending on the type of element. For instance, a Button has tap and long-tap events while a Slider has a value-set event.

Event tasks are run at priority one higher than the task which displayed the scene

Local variables set by event tasks are visible to all tasks in the same scene.

Scene Element Actions

In the Scenes action category, there are several actions for setting the properties of scene elements. You can use these for a wide variety of purposes e.g.
  • when a slider value is set, change the zoom of an associated map element
  • set the size of an element depending on current light level
  • animate elements around a scene

Note that actions that affect scene elements can only be used when the scene has already been created (via Create Scene or Show Scene). The scene does not have to be visible.

Scene Edit

The scene editor is used for designing custom scenes.

The editor consists of three areas:

Display Area

The main part of the editor, where the position and size of elements are arranged. The display area has two modes dependent on the setting of the magnifying glass icon in the corner.

Preview Mode

This mode shows the scene as it will appear when displayed.
  • Click-and-drag on the edge of the scene to resize it

Editing Mode

This mode is zoomed to make editing easier.
  • Long-click on an empty area to create a new element positioned there
  • Long-click on an element to get options for the element
  • Click on an element to edit it.
  • Click-and-drag on the centre of an element to move it
  • Click-and-drag on the edge of an element to resize it

When moving and resizing, the sides of elements are snapped to a grid to make alignment easier. The grid size is unique to each scene and can be changed via Menu / Grid Size.

Tool Bar

Undo

Allows undo of all operations, up to 20 steps in the past.

New Element

Create a new element in the middle of the scene. Useful if the scene is already cluttered with a lot of elements so there is no free space.

Touch Mode

There are three touch modes which decide the effect of taps on the display area. Normal Mode is described above. Move Mode is intended to make it easier to reposition elements. Resize mode is for making resizing easier.

Menu Options

Background Colour

A complex background can be set by long-tapping an element and specifying it as the
background element. If a uniform colour is sufficient, it can also be specified with this menu option.

However, there is a special case where it's a good idea to specify a background colour even if you already have a background element. A scene is resized to fit the container into which it's placed, but in some cases (e.g. when it is shown as a full screen activity) there will be margins left on one side of the container because the aspect ration of the scene (the relative size of its width and height) of a scene is never changed. In such a case, the margins are coloured with the background colour specified here.

Element Long-Click Options

Set Background

An element which is set as the scene background is resized to always fill the whole scene and interferes less with selection of other elements. To reverse this, long-tap on it and select Set Foreground.

Pin

When an element is positioned satisfactorily, it can be pinned to make it easier to select and manipulate other elements. To reverse this, long-tap on it and select Unpin.

Set Depth

Each element has a particular depth which is unique to it. Deeper elements are obscured by shallower elements which overlap them.

Orientation

The geometry (position and size) of each element can be configured independently for portrait and landscape display orientations by rotating the device to the desired orientation in the editor.

If no geometry is configured for a particular orientation when the scene is displayed, Tasker will attempt to fit the elements into the scene based on the geometry of the elements in the other orientation.

Scene Element: Button

About

A standard Android button enhanced to allow display of an icon, text or both.

Parameter: Position

If both a Label and Icon are specified, the Position parameter refers to the position of the Label. The Icon is then placed opposite the Label.

Events

Related Actions

See Also

The Element Editor screen.

Scene Element: Doodle

About

A Doodle is an image created by the user with a simple finger-painting screen.

Click the Doodle parameter to edit the doodle.

Doodles are stored on external storage in the directory /sdcard/Tasker/cache/doodles in case they are masterpieces which demand publishing.

Events

Related Actions

See Also

The Element Editor screen.

Scene Element: Image

Events

Related Actions

See Also

The Element Editor screen.

Scene Element: Oval / Rectangle

About

Shape elements are intended mostly for decoration but can also be used as invisible 'launchpads' for e.g. stroke events.

Events

Related Actions

See Also

The Element Editor screen.

Scene Element: Map

About

A Map element is a view onto the same kind of map window used by Google Maps but is much more automateable than the standalone app.

It's only possible to have one Map element per scene and Map elements cannot appear in Overlay scenes.

Related Actions

Events

See Also

The Element Editor screen.

Scene Element: Menu

About

A menu displays a variable selection of items and can have a separate action, text and icon defined for each item in the list.

Parameter: Source

Items can either be filled manually or from a variable array. In the case of an array, the list shows all the items starting at the first index; %var(1) %var(2) etc.

In the case of manual specification, click on the Items tab in the element editor to specify the items.

Parameter: Selection Mode

There are three selection modes:
  • single: tapping an item deselects any other item selected
  • multi: several items can be selected at the same time
  • none: tapping an item never selects it

Selected items are highlighted. There are two ways to find out the selected items:

  • assign a task under the Item Tap element event tab. Every time an item is tapped, the selected items are available in the local variable %select_indices
  • query the selected items at any time using the action Element Get Value

Parameter: Item Layout

Specifies how each item within the list will be displayed. Each item has exactly the same layout. To change the layout, click on it. Each Menu element has it's own unique item layout.

There are two pre-defined layouts you can choose from (click the magnifying glass icon). 'Icon and Text' is the default.

Events

Related Actions

Scene Element: Slider

About

A standard Android 'seek bar' enhanced to allow specification of the thumb icon and display indicators for the min, max and current values.

Events

Related Actions

See Also

The Element Editor screen.

Scene Element: Text

About

Displays non-editable text for labels etc.

Parameter: Position

Where to place the text within its box

Parameter: Text Width Scale

A horizontal scaling factor to squash up (negative values) or stretch (positive values) the text.

Parameter: Vertical Fit Mode

What to do when the height of the text to display is greater than the height of the element.

Parameter: Text Format

Specifies how the text should be displayed.
  • Plain Text
    just show the text as-is
  • Text With Links
    things that look like links are clickable (though not in the scene editor) e.g. URLs, email addresses, phone numbers
  • HTML
    interpret the text as a piece of HTML. Only simple tags are interpreted and no images are displayable

Events

Related Actions

See Also

The Element Editor screen.

Scene Element: TextEdit

About

A standard Android box for text entry.

TextEdit elements cannot appear in Overlay scenes.

Parameter: Position

Where to place the text within its box

Parameter: Text Width Scale

Horizontal scaling factor to squash up (negative values) or stretch (positive values) the text.

Events

Related Actions

See Also

The Element Editor screen.

Scene Element: Web

About

A Web element is like a browser window.

Parameters: Mode / Source

These parameters determine how the content for the WebView is to be acquired.
  • URI: the Source parameter refers to a URI (e.g. http://) from which the WebView should retrieve content.
  • File: the Source parameter contains a local file path from which the WebView should retrieve content.
  • Direct: the Source parameter directly specifies the HTML and/or JavaScript content to load

Parameter: Allow Phone Access

If checked, the content in the WebView is allowed access to local device data stores and can run JavaScript, including Tasker's JavaScript Interface functions.

This is a very powerful feature, since it allows a WebView to present a complex and highly functional interface, but should only be enabled if you entirely trust the source of the specified content.

Parameter: Self Handle Links

If checked, links will be handled by the WebView itself, otherwise they will be passed to the system for handling e.g. by the default web browser.

Events

Related Actions

See Also

The Element Editor screen.

Scene Element Edit

Allows configuration of the properties of a scene element. The different types of property are divided into tabs.

Not all elements have all tabs.

UI

For the most part, configures the visual style of the element.

Items

Only relevant to Menu elements.

Each row configures an item in the menu. Starting from the left, the controls are:

  • selection checkbox
    this is only present when Selection Mode is set to Single or Multi. It stipulates whether the item will be shown as selected when the menu is displayed.
  • icon button
    the icon to show for the item. If you don't want to show an icon, hide the icon element in the Layout parameter in the UI tab
  • label text
    the label to show for the item. If you don't want to show a label, hide the label element in the Layout parameter in the UI tab
  • action button
    an action to run when the item is tapped
  • trash can
    used to delete the item

To add an item, click the plus button at the bottom of the screen.

Background

Configures a rectangle shape to be used as the background for the element when it is displayed. The background will be stretched to fit the size of the element.

If you want to use an image for a background, create a separate Image element and place it underneath.

Event Tabs

Event tabs stipulate what Tasker should do when the user interacts with the element in some way. Most consist only of a task to specify but some allow a filter specification so that the task only runs if the event matches the filter.

To help the task to decide what to do with the event and to allow a single task to handle many different events if desired, Tasker sets certain local variables which give specific information about it. The variables are easily accessible by clicking the usual variable tag icon in any action in the task.

The following variables are available in all such tasks:

  • %scene_name
    the name of the scene containing the element
  • %element_name
    the name of the element that the user interacted with (e.g. Button1)
  • %element_type
    the type of element (e.g. Button)
  • %event_type
    the name of the event (e.g. Tap)

Text Changed

Elements: TextEdit

This event is triggered whenever the text changes e.g. because a letter key has been pressed while the element had focus.

  • %new_val
    the new text
  • %old_val
    the old text

Tap, Long Tap

Elements: Button, Doodle, Image, Map, Oval, Rectangle, Text

In a Map element, the following variables are available:

  • %coord
    the latitute,longitude of the tapped location on the map
  • %label
    the label of the tapped GeoMarker (if any). You can add GeoMarkers to a Map element with the action Scene / Element Add GeoMarker

Value Selected

Elements: Slider
  • %new_val
    the new value of the element (e.g. 50)
  • %old_val
    the last selected value (e.g. 43)

Item Tap, Item Long Tap

Elements: Menu
  • %select_indices
    a comma-separated list of currently selected items in the list (e.g. 3,4)
  • %select_labels
    a comma-separated list of the labels of currently selected items in the list (e.g. Blue,Yellow)
  • %tap_index
    the index of the item that was tapped to cause this event (e.g. 3)
  • %tap_label
    the label of the item that was tapped to cause this event (e.g. Blue)

Stroke

Elements: Doodle, Image, Oval, Rectangle, Text

A stroke has two filter parameters.

  • Direction
    the direction from the start point of the stroke to the end point
  • Length
    minimum distance in (approximate) pixels from the start point of the stroke to the end point

If either of these parameters don't match the event, the task will not run.

  • %stroke_dir
    Direction, as described above
  • %stroke_len
    Length, as described above

Link Tap

Elements: WebView

A Link Tap has two filter parameters:

  • %url
    URL as described above

Page Loaded

Elements: WebView
  • %url
    the URL of the page (e.g. http://i.hate.fruit/except/mangos.html)

App Creation

Introduction

Tasker allows creation of completely standalone apps (APK files) which have no requirement for Tasker to be installed on the device they're used on.

The intention is to allow people to create their own apps for fun, for sale or just to share with friends. Or if you are concerned about all the permissions Tasker needs you can create an app that has only the permissions you require!

App creation is uncomplicated and takes only a few seconds once you're setup.

To create apps, you need the following on your device (not necessarily on the device(s) the app will run on):

  • Android 2.3+
  • Tasker App Factory (free, see below)
  • a device with an ARM or x86 processor (the vast majority of devices have one of those)

App creation is accessed by long-clicking on a project (not the base project) or task and selecting Export then As App. Any linked resources needed (e.g. other tasks, images) are included as part of the new app.

To export anything except a single task, you need to create a project and put anything you wish to export in the project.

Hello World Example

Let's make a simple app that just pops up Hello World! when it's launched. This example assumes that you are in Beginner Mode, please make sure that Menu / Prefs / UI / Beginner Mode is checked before you start.

1. Create A Task

  • make a new task
    click on the Tasks tab then click + to add a new task. Give it a name Hello World.
  • give the task an icon
    long-click on the colourful icon in the bottom right and pick any icon
  • add the Popup action
    click + in the bottom left to add an action, select category Alert and then action Popup. Fill in Hello World! in the Text parameter, then click the accept button bottom left to accept the action, then again to accept the task.
  • ask Tasker to create an app
    long-click on the task you just made, select Export then As App. A popup appears mentioning a Missing App.

2. Install Tasker App Factory

To generate apps, Tasker needs a free helper app called Tasker App Factory. It's available on Play Store and from the Tasker website.

Click the accept button on the popup to install the helper app.

3. App Generation

Tasker should now start generating your app, which will take maybe 12 seconds depending on your device.

If all goes well, the Cancel button will turn into an OK button meaning your app is ready!

We can't run the app straight away though because it hasn't been installed. Click on the rightmost bottom button with the Android icon to ask Android to install your app.

Once Android is done installing, you can click it's Open button to run the app, or you can simply go to the home screen and click on the app's icon in the launcher.

You should see a Hello World popup!

App Configuration

When in Beginner Mode, and if you only have one task to install, Tasker will make guesses about how to configure the resulting app.

More usually, before an app is generated you will be presented with a configuration screen which lets you specify various options for the new app.

App Signing

Android requires that all apps be signed i.e. that they certify who created them. By default, Tasker uses an automatically-generated insecure certificate to sign apps and doesn't bother mentioning it.

However, if you want to release an app via a public site (Play Store for example), you will need to sign it with a proper (secure) certificate. That's done so the site knows that it's you that's giving them the app each time you submit a new version.

Certificates are kept in a keystore which is protected with a password. To generate a keystore with a secure certificate, use Menu / More / Developer Options / Create Certificate.

Once you've generated the keystore, Tasker will often need to ask you for the certificate password before app generation so that it can be used to sign each new version of your app.

Tasker makes an automatic backup of your keystore to

	/sdcard/Tasker/factory/keystore.user

when it is first created and when you backup your profile data with Menu / Data / Backup. It's highly advisable to make a copy of that file and keep it safe away from your device.

Target Device Requirements

The device the child app is used on must meet the following requirements:
  • have the Google Maps library installed, even if the exported project or task does not use location in any way
  • the minimum SDK version specified in the Kid Config screen
  • have hardware corresponding to features specified in the Kid Config screen

Miscellaneous

Accessibility Service

Android accessibility support changed in Android 4.1 (JellyBean). If support is needed for accessibility services in 4.1+, the Minimum Android Version in the child Configuration screen must be set to 16 or higher. If support is required pre-4.1, it must be set to less than 16.

In other words, to support both pre- and post-4.1 devices, two APKs must be generated.

This applies to all features that rely on an Accessibility Service (events Notification, New Window, Button Widget Clicked, Notification Click, variables %NTITLE, %WIN)

Google Play Store allows publication of APKs targetting different Android versions under the same package name, however this has not been tested by the developer of Tasker.

Monitor Service

Most child apps include a service which constantly monitors for events. If you know that you don't need to monitor events anymore (in-between app launches) you can use the Disable action in the Tasker category to stop it.

It will be automatically started again next time the app is launched.

Widgets / Shortcuts

  • it's not possible in Android to auto-create widgets with any app
  • it's not possible *currently* to offer the user child-app widgets, that may be available in the future to some extent

Memory Problems

If you are having low memory problems during app generation, you can ask the App Factory to use external storage for the generation process. See Menu / Prefs / More / Factory.

Preferences

The new app currently has the same default preferences as Tasker with a couple of exceptions.

You can use the Set Tasker Pref action in the Tasker category to change some of the preferences when the app is running.

Available Tasker Features

Obviously, the device the new app runs on may not have the same set of available e.g. actions as the device the app is created on.

The Test action in the Misc category allows you to check which Tasker features are available at run time (when the app is being used).

Images

Referenced images (even scene doodles and photos from the SD card) are bundled in with the app.

Plugins

When the new app is launched, it checks that all referenced plugins are installed on the device and prompts the user to install missing ones.

Some plugins may not work on other devices if they themselves store something about the action to be performed, since that data will not be available on the other device.

Plugin authors: see also here.

JavaScript actions

Scripts referenced by a JavaScript action are packaged with the new app and run directly from there.

SL4A Scripts

Scripts referenced in a Run Script action are packaged with the new app and unpacked to /sdcard/sl4a/scripts, prefixed with the package name, on first run. Tasker automatically inserts the WRITE_EXTERNAL_STORAGE permission for that purpose.

If SL4A is missing on the target device, the new app will prompt the user to download when launched.

If a new version of the app is reinstalled on the target device, the new versions of the scripts will be written if the length has changed.

Other External Components

The following external components are also checked for on launch of the new app where necessary:
  • Speech engines (Say, Say After)
  • APNDroid (Mobile Data APN)
  • Zoom (Zoom action category actions)
  • apps for 3rd Party actions
  • apps for 3rd Party events

Maps

The data for Maps is provided by Google and they require a maps key for each developer that uses it.

If you are using Map scene elements in your app, you will need to acquire a key from Google that can be included with your app.

  1. [if necessary] setup a Google Account
  2. [if necessary] create a signing keystore
  3. get a fingerprint of your certificate: Menu / More / Developer Options / Certificate Checksum
  4. fill in the fingerprint at Google's request page.
  5. in the App Configuration screen when generating your app, enter the map key in the relevant box. The box will only be presented if your app uses one or more Map scene elements.

Variables

The new app is completely independent of Tasker, so it also does not share any variable values.

Permissions

Tasker attempts to reduce the set of permissions required by the new app to the smallest set required for the functionality it contains. For example, no Vibrate permission will be requested if there is no vibrate action used.

The WAKE_LOCK permission is unfortunately always required for technical reasons.

App Size

Generated apps are minimally around 640K but are unlikely to be significantly larger unless a lot of images are referenced. It's possible that this minimum can be reduced in the future.

Encryption

Code for encryption is included in any app created by App Factory, however if you don't use encryption features it's unlikely to be a problem in terms of export restrictions. However, that is an opinion, it is not legal advice.

Note that code libraries for encryption are included with every Android device. Tasker (and child apps) use these libraries to perform the encryption, they do not contain encryption code themselves.

Licence

You are free to distribute and sell apps created by Tasker in any way you wish. No licence fees to the developer of Tasker are necessary. It would be courteous to reference Tasker and it's website (http://tasker.dinglisch.net) somewhere in your new app if possible.

Please note that use of images from some Ipacks in commercial software is prohibited by the licence terms of the image creators. You will need to contact the image designer to request their assent in such cases. (the origin of an Ipack's images is displayed in the Ipack image selection screen).

Tasker's builtin icons are mostly from the Crystal Project, please check the licence terms on their website.

Task / Shortcut Widgets

The standard way of running a Tasker task is by attaching it to a profile which performs it when the profile becomes active. However, tasks can be directly assigned to icons on the home screen called Widgets or Shortcuts.

Standard Widgets / Shortcuts

These consist of an icon (the Task icon) with a label (the Task name) underneath, and look identical to the normal application icons in the home screen.

Clicking on the icon runs the associated Task.

Task Timer Widgets

This type consists of an icon and label, like the standard widgets, but also has a countdown timer display which counts down Days, Hours, Minutes and Seconds.

When the timer expires (reaches 0) the associated Task is run.

Tapping on the icon of the widget shows a configuration screen where the timer can be configured.

Tapping on the timer section of the widget will pause, restart or reset the timer, depending on its current state.

Note that the timer updates more rarely when it is still a long way from expiry in order to minimize power usage.

Creating a Widget / Shortcut

  1. Click and hold in an empty space on the Android home screen, until a dialog appears.
  2. Select Widgets or Shortcuts
  3. Select Task or Task Timer (Widgets only)
  4. Pick an existing task or create a new one. When creating a new one, if you do not expect to change the function of the widget/shortcut select One-Time to avoid it cluttering your list of tasks.
  5. Use the Configuration Screen to configure what should happen when the icon is clicked (or the timer expires, in the case of a Task Timer widget). Take care to select an appropriate name and icon for the task, as these will appear on the home screen.

Changing a Widget / Shortcut

The function of widgets or shortcuts created from one-time tasks cannot be changed, it must be deleted and recreated.

On the other hand, if you associate a normal named task with a widget or shortcut then when the task is changed (via the Task Edit screen) the function of the widget or shortcut also changes.

There are also some actions which will change the appearance of any widget:

  • Tasker/Change Icon Set: changes the icon of a set of widgets to a different style.
  • Tasker/Set Widget Icon: changes the icon of a particular widget
  • Tasker/Set Widget Label: changes the label of a particular widget
The latter two you could use to visually show the status of something e.g. WiFi.

Deleting a Widget / Shortcut

Click and hold on the icon in the Android home screen until the dustbin icon appears. Drag the widget or shortcut icon to the dustbin icon and release.

Differences Between Widgets and Shortcuts

Advantages of Shortcuts
  • they can be created in some places that widgets can't e.g. in home screen folders
  • their layout probably better matches the default launcher layout
  • long shortcut labels will scroll when selected in the default launcher
  • they use slightly fewer system resources, though it's probably not noticeable
Advantages of Widgets
  • they can use image files from SD for their icon
  • their icon and label can be dynamically changed after creation via the Set Widget Icon and Set Widget Label actions.
  • timer widgets are possible
  • they can be created without a label
So a shortcut should be used unless the extra configuration possibilities of a widget are necessary.

General

  • you can create as many Tasker widgets and shortcuts as you like. You can even have several Timer widgets running at the same time.
  • Timer Task widgets continue to update even when the screen is off.

Beginner Mode

When Tasker first starts, Beginner Mode is enabled.

In Beginner Mode, Tasker attempts to simplify things for inexperienced users, mostly by UI elements which are unlikely to be needed by inexperienced users.

Beginner Mode can be disabled by unchecking the option:

Menu / Prefs / UI / Beginner Mode

Some of the changes made in Beginner Mode are:

  • main screen, Variables tab removed
  • main screen, export options removed
  • main screen, project tab not accessible
  • task edit screen, task properties icon removed
  • action edit screen, Label, Continue On Error parameters removed
  • prefs screen, many options removed

In the userguide, when references are found to things which do not appear on the screen. It's worth disabling Beginner Mode to see if that's the problem.

CPU Control


Note: CPU control can damage your hardware e.g. by the CPU overheating. As for all Tasker functions, you use it at your own risk!


General

On a rooted device (only) Tasker is able to control the CPU frequency of an Android device to some extent. This is usually done either to save battery or make the device more responsive depending on the circumstances.

The relevant control action is CPU in the Misc category. You can monitor the current state with the variables %CPUFREQ and %CPUGOV.

There are two aspects which can be controlled, the Frequency Range and the CPU Governor. You will need to experiment with combinations of these to achieve the best results.

Frequency Range

You can set the minimum and maximum frequency which the CPU is allowed to run at. Only certain frequencies are valid, depending on the CPU (click on the magnifying glass button to select a valid value).

The maximum frequency is probably initially set lower than the maximum frequency that the CPU can actually handle. If that is the case, you should be very cautious about setting it higher. Tasker will warn you the first time you try to do configure an action to do that, assuming you have not been using other apps to change the maximum frequency limit.

CPU Governor

The active governor decides what the CPU frequency should be set to at a particular time, within the frequency range you have set. Each has it's own unique strategy. Here are the most common governors:

  • Performance
    keeps the CPU frequency always at the maximum. Most power-hungry, most responsive.

  • Powersave
    keeps the CPU frequency always at the minimum. Least power-hungry, least responsive.

  • Ondemand
    when the CPU is needed, immediately sets it to maximum frequency. Slowly reduces the frequency back down to the minimum as time passes. Responsive, reasonable power usage.

  • Interactive
    like Ondemand, but more responsive with slightly more battery usage.

  • Conservative
    when the CPU load is needed, slowly increases the frequency to maximum. When the CPU is no longer needed, immediately drops back to the minimum. Less power-usage than Ondemand or Interactive, less responsive.

Not all governors are available on all ROM versions. Your device may also have a governor not described here. You can still set that governor with Tasker.

CPU Action Not Available

Common problems are:
  • root not recognized
    Tasker decides that a device is rooted if /system/app/Superuser.apk is present and su is present in one of the directories of $PATH
  • no available frequencies
    Tasker needs to know what frequencies it can set the CPU to. It looks for the files /sys/devices/system/cpu/cpuX/cpufreq/scaling_available_frequencies, /sys/devices/system/cpu/cpuX/cpufreq/stats/time_in_state and /system/etc/scaling_available_frequencies (in that order). If you know what your CPU frequencies are, you could write them (space-separated, in numerical order) to the first (any number of CPUs) or last (1 CPU only) of those files.

Widget / Shortcut Configuration

This screen allows selection and configuration of a task which will be performed when an icon is clicked on the Android home screen or a timer elapses.

Please read about Task Widgets / Shortcuts before venturing further on this screen.

The layout of the Configuration screen is nearly identical to that of the Task Edit screen. The differences are as follows:

  • there are no icons for renaming or deleting the task

  • at the bottom of the Widget Configure screen is a launcher button. This will take the icon and text of a selected application as the icon and name of a new macro. You can then change the details as you wish e.g. add an action before loading, change the icon.

    Tasks created with this button are One-Time only: you can't access them again after the widget is created.

  • when creating a Task Timer widget, you'll find a different button in the bottom right which allows initialization of the timer. You can use this, or wait till the widget is created and then click on the icon to configure the timer.

Flow Control

Overview

Task flow control is based on the following Tasker elements:
  • variable values
  • conditions on individual actions
  • If / Else / Endif actions for conditional grouping of following actions
  • For / End For to do a set of actions once for each of a set of elements
  • Goto action (jumping around within a task).
  • Perform Task action (calling other tasks as subroutines)
  • Stop action (terminate task immediately)

On the Wiki there is a detailed example of processing a file's content [External Link].

Tip: if you accidentally create a task that never ends when experimenting with loops, use the Kill button in the Task Edit screen to end it manually.

Conditions
Every action can have a condition associated with it (specify this in the Action Edit screen). If the condition does not match, the action will be skipped.

A condition consists of an operator ('equals' etc) and two parameters. The possible operators are:

  • Matches (~)
    The right parameter is a pattern which the left parameter is
    matched against.
  • Not Matches (!~)
    As above, but the match must fail for the action to be executed.
  • Less Than (<)
    Both parameters (after variables are substitued) must be numbers or mathematical expressions and the first must be less than the second e.g. 3 < 6. See Maths for more info.
  • Greater Than (>)
    As above, but the first parameter must evaluate to more than the second.
  • Equals (=)
    As above, but the two parameters must be numerically equal.
  • Not Equals (!=)
    As above, but the two parameters must be not numerically equal.
  • Is/Isn't Set
    Whether the specified variable has a value or not.

Expressions which are not mathematically valid e.g. I Am The Walrus > 5 give a warning and evaluate to false when used with a mathematical operator.

Foreach Loop

Goal: perform a set of actions for each of apple, pear and banana.

1. For
%item
apple,pear,banana
Loop once for each of apple, pear and banana
2.   Action One
Example: Flash %item
3.   Action Two
...
4. End For
Return to action 1 if we havn't done all the items yet

Result: Action One and Action Two are performed three times. The first time, the variable %item is set to apple, the second time pear and the last time banana.

You can insert a Goto action in the loop with either Top of Loop (meaning continue, skip to the next item straight away) or End of Loop (meaning break, stop without doing any more items) specified.

In adition to simple text, the For action accepts any comma-separated combination of these Items:

A common case is to use %arr(), which performs a loop for each element in the array %arr.

For Loop

Goal: perform a set of actions for each of a range of numbers in turn.

Use the Foreach Loop as described above, with the Items parameter being a range specification e.g. 4:0, 100, 0:8:2 (= 4,3,2,1,0,100,0,2,4,6,8).

Until Loop

Goal: perform a Task X until some condition is met (at least once)

1. Action One
...
2. Action Two
...
3. Goto
1
If %QTIME < 20
Return to action 1 if runtime < 20

Result: Action One and Action Two are performed until %QTIME contains the value 20 or more i.e. until the task has been running for 20 seconds.

While Loop

Goal: perform a Task X while some condition is met.

1. Stop

If %fruit Not Matches Apple
Stop task if it's not crunchy, otherwise go to next action
2. Action One
...
3. Action Two
...
4. Goto
1
Go back and see if we're still crunchy

Result: Action One and Action Two are performed while %fruit contains the value Apple.

Counter Loop

Goal: perform a Task X a set number of times.

1. Variable Set
%count, 0
Initialize the counter
2. Action One
Label: LoopStart
...
3. Action Two
...
4. Variable Add
%count, 1
Add one to %count
5. Goto
LoopStart
If %count < 10
Return to action 2 if count < 10

Result: after initialization of %count to 0, the task loops around the actions from 2-5 until %count reaches 10, at which point the condition on the Goto fails and the end of the task is reached.

Note that we used a Goto to a labelled action this time. In all but the very simplest tasks it's better to use a label rather than a number. It's easier to work out what's happening and if you insert or delete actions before the loop starts, the Goto will still jump to the right place.

An alternative way to do this loop is to use a For action specified as 0:10.

If / Then / Else Condition

Goal: perform certain Tasks if conditions are met, otherwise perform a different task.

1. If
%fruit ~ Apple
~ is short for 'matches'
2.   Action One ...
3.   Action Two
...
4. Else If
%fruit ~ Pear
an Else action with a condition
5.   Action Three ...
6. Else
7.   Action Four
...

Result: actions One and Two are executed if %fruit matches Apple, Action Three is executed if %fruit matches Pear, otherwise Action Four is executed.

Notes:

  • you can have as many Else Ifs in a condition as you like
  • if your condition is in the middle of a more complicated task, you need to tell Tasker where the condition ends with an End If action

Subroutines

To call another task, use the Perform Task action. To use it as a subroutine, you just need to ensure that the priority of the calling task is less than the priority of the called task (more info: scheduling).

The parent can optionally pass values to the child and receive a result back:

Parent Task

1.   Perform Task
Child,
Priority, 10
%par1, 5,
Result Value Variable, %result
pass 5 to the child, expect a result in %result
2.   Variable Flash
Result: %result
what did we get back ?

Child Task

1.   Variable Set
%newval, %par1 + 1, Do Maths
add one to the value that was passed
1.   Return
%newval
set %result in the parent to the value of %newval in the child

Result: the parent flashes 6

Notes:

  • changes made to %par1 and %par2 in the child task are not reflected by their changing in the parent task
  • receiving a return value is optional for the parent, even if the child tries to give it one
  • unlike Return statements in most computer languages, Tasker's does not necessarily stop the child task, so if the child and parent have the same priority they can both run together and the child return several results over time.

Encryption


Note: encryption functions are not available on the Play Store version of Tasker due to US export restrictions.


Tasker has the ability to encrypt and decrypt files. The relevant actions are in the Encryption action category.

Since decryption can be automated, you have the possibility to keep data files encrypted outside of certain times, locations, applications etc.

Warning: make backups of your files while setting up encryption until you understand how the system works and are sure the encryption/decryption process does not cause any corruption.

Tip: Tasker does not give progress reports while it's doing encryption, if you want to know when an long decryption operation is finished, just put a Vibrate action or similar after the Encrypt/Decrypt action.

Keys

Tasker uses a system of named keys. All of the encryption actions can specify a key name so that you can use different keys with different files (if desired).

If no key name is specified, default is used.

Once a passphrase for a key is entered, the ciphers it generated are stored in memory until explicitly deleted. The deletion might be specified after an Encrypt/ Decrypt File action, or explicitly with the Clear Key action.

Setting Up Encryption

General Preferences

First thing to do is check whether the encryption preferences for Encryption Iterations and Encryption Algorithm are as you wish. Once you start encryping things, it's time consuming to start again with new encryption preferences.

The preferences can be found at Menu / Prefs / Action. Be sure to have a look at the help text for each item.

Initial Encryption
To start with, you probably want to encrypt some files which are in a particular directory, which you can then decrypt as they are needed.

To do that, create a task called Encrypt or similar and add one or more Encrypt File or Encrypt Dir actions to it.

By default, the key is cleared once the file is encrypted, so click 'Leave Key' for all but the last action, otherwise you'll have to enter your passphrase for each file.

Next, create a Tasker shortcut on the home screen, using the Encrypt task. Tap the widget to encrypt your files. Notice how you are only asked for the passphrase for the first one, because it is stored until cleared.

The encrypted files will all receive an extension .tec and the original files are deleted.

Decryption

Once you have a set of encrypted files, you need to setup the contexts in which they will be decrypted.

Create another task called Decrypt or similar, and add Decrypt actions to it to match the encrypt actions you setup previously.

Don't click Clear Key, otherwise you'll have to enter your passphrase for every file (and at the start of encryption).

Now you can use your Encrypt and Decrypt tasks whenever you like. For instance, you could create a profile with a Location Context and run your Decrypt task when entering the location (assign Decrypt as the Enter task) and your Encrypt task when leaving the location (assign Encrypt as the Exit task).

Important: when you use the Decrypt action, it recreates the original file from the encrypted copy, but does not delete the encrypted version.

When you re-encrypt the file, if it has not changed it is simply deleted since we already have an encrypted copy. If it has changed, it is re-encrypted.

The purpose of this method of operation is to:

  • avoid the lengthy encryption process when unnecessary
  • prevent accidental double-encryption (encrypting the same file twice)

Enter Key Action

It's not always convenient to enter the key at the point at which de- or encryption takes place. This action allows you to specify the passphrase for a key at a different point.

If you don't wish to double-enter a key when encrypting, you can also use this action before an Encrypt action and not select Confirm.

Set Key Action

To allow full-automation of en/decryption, the passphrase for a key can also be set without user interaction. However, this is much less secure tham Enter Key because:
  • the passphrase (as part of the action) is stored in clear text in device memory and could be read by the root user if the device OS is compromised
  • although the passphrase is itself encrypted when a backup is made to SD, the parameters for that encryption can be recovered from the java code in the Tasker apk file

Security

Algorithm
Tasker uses symmetric encryption, meaning the same passphrase is used both to encrypt and decrypt the data.

The default algorithm is "PBEWithMD5And128BitAES-CBC-OpenSSL". PBE stands for password-based encryption, see RFC 2898.

A salt is combined with the passphrase several hundreds of times using the MD5 algorithm to produce a key which is used for the 128-bit (default setting) AES algorithm.

The number of iterations and algorithm can be set in Menu / Prefs / Action.

Pass Phrases
The longer the passphrase, the more secure the data. Minimally 8 characters of mixed alphabetic, numeric and punctuation characters is recommended.
Clearing Keys
While a key's ciphers are in memory, anyone can use the key for decryption or encryption if your device is lost or stolen, so it may be wise to setup a Clear Key action e.g. when the device is turned off (see Screen Off in the Event Context) or at a particular time (Time Context), depending on what you are using the encryption for.
Manually Encrypting/Decrypting
You can use Tasker's file browser (action Browse Files) to encrypt/decrypt files directly, via a long-click on the file.

Gestures & Shaking

General

Gestures are physical movements of the phone in space, which you first record by creating a new Event of type Gesture (in the Misc category).

When you later redo the gesture while using your device, Tasker will carry out the corresponding task(s) you have attached to its profile.

Like normal events, gestures are restricted by other contexts. For example, if you define a profile with a Gesture (Event) and Application context, the gesture will only be recognized while using that particular application.

Note: it might be a good idea to disable Tasker before setting up new gestures, as otherwise you are likely to trigger previously defined ones.

Recording A Gesture

Gesture Points
First off, it's important to know that Tasker only records the particular points (which we'll call inflection points) of a gesture that you tell it to. For example, recording a gesture involving tilting the phone to the left and back you would record three inflection points: the start, the tilted left position, and the end (which is the same as the start in this case).

You can record as many points as you like, but in general it's best to record only the points where the phone is not moving.

Recognized Movements
Tasker will only recognize changes in the angle of the phone i.e. tilting to left or right, backwards or forwards, or rotating vertically. Imagine three poles going through the device in the three dimensions.

Moving the phone backwards or forwards, up or down or side to side cannot be recognized.

Procedure
  1. create a new Gesture Event and give it a name (so you can differentiate between different gestures).
  2. put the phone in the position where you want the gesture to start and press-and-hold the Call, Camera, Menu, Search or Volume hardware buttons to record the point. The device will buzz.
  3. move to another (preferably not-moving) point on the path of your gesture, and press the button again (not a long press). The device will buzz.
  4. on the final inflection point, press-and-hold the button to mark the end of the gesture. The device will buzz again and the "Recorded." message should now flash up.
  5. Press Done, and add a Vibrate action so you can hear when your pattern matches when testing it.

Activation

Calibration
Before trying to match a pattern, you probably need to calibrate the hardware in your device. Go to Menu / Prefs / Monitor / Gestures. Press the Calibrate button and tilt your phone around in all directions.

Tasker now has some idea what kind of values the accelerometer in your phone produces.

You only need to calibrate once.

Matching

Now exit Tasker and move your device through the points you previously defined when recording. You should hear the device vibrate when it reaches the final recorded point.

If not, try playing with the values in the Gesture Settings screen. For instance, you could try raising the Match Radius (but be careful not to raise it too much or you'll get a lot of matches by mistake).

Power Usage

Tasker does its best to limit power usage of gesture monitoring.
  • monitoring for gestures only takes place when all the other contexts in a profile are already active (and so the gesture might have a chance of activating the profile). For example, if you combine an Application and Gesture (Event) context, gesture monitoring will only take place while using that particular application.
  • Gesture monitoring is by default turned off when the display is off unless a power source is connected to the device, unless specified otherwise in Menu / Prefs / Monitor / Display Off Monitoring
  • updates from the accelerometer are at the minumum rate until the start of a gesture is detected.

Icons

Tasker can use four categories of icons:
Application, Built-In, Ipack, User-Installed.

In some places it's also possible to use any image stored on local media as an icon.

Application Icons

These are taken from applications installed on the device.

Minor note: if the icon of the application changes, an update of previously created widgets/shortcuts can be forced by creating a single widget with the new icon and then rebooting.

Built-In Icons

These come with Tasker and are kept in the device's memory.

Ipack Icon Sets

Ipack is a free, open format for sharing of icon sets between Android applications. Ipack icon sets can be either installed from Play Store or from the Ipack website.

When setting an icon, you will notice an item labelled Download More Icons. Clicking on it will use the appropriate source depending on which version of Tasker you have.

User-Installed Icons

You can also install your own icons directly into Tasker's icon directory /sdcard/Tasker/.icn/. Make sure the icons are in a subdirectory. The subdirectory should also only be one level deep (no subsubdirectories).

Icons must be in PNG format.

Example: a two-icon set called Christmas would have the two files in these locations:

/sdcard/Tasker/.icn/Christmas/santa.png
/sdcard/Tasker/.icn/Christmas/snowman.png

JavaScript Support

Introduction

Tasker supports running JavaScript code in tasks or WebView scene elements. Most Tasker actions can be accessed direct from the JavaScript. JSON and XMLHTTPRequest are also directly available from the JavaScript code.

JavaScript in Tasks

JavaScript can be embedded inline in tasks via the JavaScriptlet (direct specification of JavaScript to run) or JavaScript (load script from file) actions.

In both cases, the JavaScript executes in sequence with the other actions in the task and variables are transparently converted so pieces of JavaScript can be interwoven throughout the task.

Embedded in HTML

WebView elements allow specification of mixed HTML and JS for the element content.
<H1 onClick="setWifi( false )">ClickMeToTurnOffWifi</H1>

This allows a single WebView to present a complete user-interface.

Local Variables

In JavaScript(let) actions, local variables (all lower case, e.g. %myvar) are directly accessible in the JavaScript without the % sign (e.g. myvar). If the script changes the value, the new value is transparently used by subsequent actions in the task.

In JavaScript embedded in HTML, the functions local and setLocal must be used to access variables local to the scene hosting the WebView.

Global Variables

Tasker global variables need to be accessed via
global() and set via setGlobal().

Arrays

Local Tasker arrays are transparently available in Javascript(let)s and vice-versa. They are not available in WebViews.

Arrays which are not existing Tasker arrays must be declared in the JS as such i.e. in this case arr will not be visible to the remainder of the task:

	var arr = getSomeArray();

Whereas in this case it will:

	var arr = [];
	arr = getSomeArray();

Note that:

  • JavaScript array indices start at 0, whereas Tasker array indices start at 1
  • JavaScript uses [] while Tasker uses ()

So, for example, %arr(1) (Tasker) is equivalent to arr[0] (JavaScript).

Settings

Unlike normal Tasker actions, settings which are changed in JavaScript as part of a profile's enter task are not restored when the profile exits.

Execution

Execution Instances

Only one script can execute at one time. Once a piece of JavaScript is executing, it cannot be interrupted by another piece.

Working Off-Device

You might wish to develop long and/or complicated tasks off-device e.g. on a PC. There are two strategies for that:

1. JavaScript action

For off-device testing, use Menu / More / Developer / Save JS Library Template to get dummy definitions for the built in functions. Include that file when developing on your PC.

To test in your JavaScript code whether you're on-device or not, use

var onAndroid = ( global( 'sdk' ) > 0 );

By using the JavaScript action rather than JavaScriptlet you can easily access a file synced from PC to a file on the Android device.

2. Using WebView

If you specify a website URL as the content for your WebView, then testing the code on the target device is a simple matter of pushing the new version to your webserver and reloading the WebView on the device (see action Element Web Control)

Builtin Function Execution

Calls to most Tasker builtin functions (see below) are executed as normal single-action tasks and thus may be blocked by other executing tasks.

They execute at the priority of the task that executed the JavaScript plus two.

JavaScript(let): Alert,Confirm,Prompt

Scripts using these functions require a 'user-interface' and may cause interference with the currently running app (though in most cases they will not).

JavaScript(let): Auto Exit

By default, the JavaScript(let) action will end when the main execution sequence is finished.

If you are using asynchronous code e.g. via setTimeout() or other callbacks, you should deselect Auto Exit. You are then responsible yourself for telling Tasker to continue the task by calling exit().

In any case, execution will stop when the timeout configured for the action is reached.

JavaScript(let): Libraries

You can specify as many libraries as you want in the Libraries parameter, separated by newlines.

Several popular libraries are pre-selectable.

You may wish to download them manually to your local storage and change the http URL to a file URL so that Internet is not required to run your script.

Important: if you are using your own libraries developed on Windows, you may need to convert CRLF style line endings to Unix style LF.

Builtin Functions

Tasker makes most of it's actions available via functions which can be called directly via name in JavaScript(let) actions and WebView elements.

Exception: in WebView content where mode is set to URL, the functions must be prefixed by tk e.g. tk.flash('Woo!')

alarmVol / btVoiceVol / callVol / dtmfVol / mediaVol / notificationVol / systemVol / ringerVol

var ok = alarmVol( int level, bool display, bool sound )

Set the relevant system volume to level.

If display is true, the new level will be flashed up on-screen.

If sound is true, a tone will sound at the new level.

audioRecord

var ok = audioRecord( str destPath, str source, str codec, str format )

  • destPath: where to put the recording. Note that a file extension is not necessary, it will correspond to the selected format.
  • source: def, mic, call, callout or callin
  • codec: amrn, amrw or aac
  • format: mp4, 3gpp, amrn, amrw or amrr

The JavaScript does not wait for the audio recording to complete.

See also: audioRecordStop().

audioRecordStop

var ok = audioRecordStop()

Stop recording previously initiated by audioRecord().

browseURL

var ok = browseURL( str URL )

Open the default browser at the specifed URL.

button

var ok = button( str name )

Simulate a press of the named button.

name must be one of back, call, camera, endcall, menu, volup, voldown or search.

This function requires a rooted device.

call

var ok = call( str num, bool autoDial )

Make a phone call.

If autoDial is false, the phone app will be brought up with the number pre-inserted, if true the number will also be dialed.

callBlock

var ok = callBlock( str numMatch, bool showInfo )

Block outgoing calls matching numMatch.

If showInfo is set, Tasker will flash a message when a call is blocked.

callDivert

var ok = callDivert( str fromMatch, str to, bool showInfo )

Divert outgoing calls matching fromMatch to the number to.

If showInfo is set, Tasker will flash a message when a call is diverted.

callRevert

var ok = callRevert( str numMatch )

Stop blocking or diverting outgoing calls previously specified with callBlock or callDivert.

carMode

var ok = carMode( bool onFlag )

Turn on or off Android Car Mode.

clearKey
var ok = clearKey( str keyName )

Clear the passphrase for the specified keyName.

See Also: Encryption in the Userguide.

composeEmail
var ok = composeEmail( str to, str subject, str message )

Show an email composition dialog with any specified fields pre-filled.

The JavaScript does not wait for the email to be sent before continuing.

composeMMS
var ok = composeMMS( str to, str subject, str message, str attachmentPath )

Show an MMS composition dialog with any specified fields pre-filled.

The JavaScript does not wait for the MMS to be sent before continuing.

composeSMS
var ok = composeSMS( str to, str message )

Show an SMS composition dialog with any specified fields pre-filled.

The JavaScript does not wait for the SMS to be sent before continuing.

convert
var result = convert( str val, str conversionType )

Convert from one type of value to another.

conversionType must be one of: byteToKbyte, byteToMbyte, byteToGbyte, datetimeToSec, secToDatetime, secToDatetimeM, secToDatetimeL, htmlToText, celsToFahr, fahrToCels, inchToCent, metreToFeet, feetToMetre, kgToPound, poundToKg, kmToMile, mileToKm, urlDecode, urlEncode, binToDec, decToBin, hexToDec, decToHex, base64encode base64decode, toMd5, toSha1, toLowerCase, toUpperCase, toUpperCaseFirst.

See also: action
Variable Convert.

createDir

var ok = createDir( str dirPath, bool createParent, bool useRoot )

Create the named dirPath. If createParent is specified and any parent directory does not exist, it will also be created.

If useRoot is specified, the operation will be performed as the root user (where available).

createScene

var ok = createScene( str sceneName )

Create the named scene without displaying it.

cropImage

var ok = cropImage( int fromLeftPercent, int fromRightPercent, int fromTopPercent, int fromBottomPercent )

Crop an image in Tasker's image buffer previously loaded via loadImage.

decryptDir

var ok = decryptDir( str path, str key, bool removeKey )

As decryptFile(), but decrypts each file in the specified directory in turn.

decryptFile

var ok = decryptFile( str path, str key, bool removeKey )

Decrypt the specified file using the encryption parameters specified in Menu / Prefs / Action.

If removeKey is not set, the entered passphrase will be reapplied automatically to the next encryption/decryption operation with the specified keyName.

See Also: Encryption in the Userguide, Decrypt File action.

deleteDir

var ok = deleteDir( str dirPath, bool recurse, bool useRoot )

Delete the named dirPath. recurse must be specified if the directory is not empty.

If useRoot is specified, the operation will be performed as the root user (where available).

deleteFile

var ok = deleteFile( str filePath, int shredTimes, bool useRoot )

Delete the named filePath.

shredTimes has range 0-10.

If useRoot is specified, the operation will be performed as the root user (where available).

See also: action Delete File

destroyScene

var ok = destroyScene( str sceneName )

Hide the named scene if it's visible, then destroy it.

displayAutoBright

var ok = displayAutoBright( bool onFlag )

Whether the display brightness should automatically adjust to the ambient light or not.

displayAutoRotate

var ok = displayRotate( bool onFlag )

Whether the display orientation should change based on the physical orientation of the device.

displayTimeout

var ok = displayTimeout( int hours, int minutes, int seconds )

How long the period of no-activity should be before the display is turned off.

dpad

var ok = dpad( str direction, int noRepeats )

Simulate a movement or press of the hardware dpad (or trackball).

direction must be one of up, down, left, right or press.

This function requires a rooted device.

enableProfile

var ok = enableProfile( str name, boolean enable )

Enable or disable the named Tasker profile.

encryptDir

var ok = encryptDir( str path, str keyName, bool rememberKey, bool shredOriginal )

As encryptFile(), but encrypts each file in the specified directory in turn.

elemBackColour

var ok = elemBackColour( str scene, str element, str startColour, str endColour )

Set the background colour of the specified scene element.

See also: action Element Back Colour.

elemBorder

var ok = elemBorder( str scene, str element, int width, str colour )

Set the border colour and width of the specified scene element.

elemText

var ok = elemText( str scene, str element, str position, str text )

Set the text of the specified scene element.

pos must be one of repl (replace existing text completely), start (insert before existing text) or end (append after existing text).

See also: action Element Text.

elemTextColour

var ok = elemTextColour( str scene, str element, str colour )

Set the text colour of the specified scene element.

See also: action Element Text Colour.

elemTextSize

var ok = elemTextSize( str scene, str element, int size )

Set the text size of the specified scene element.

See also: action Element Text Size.

elemVisibility

var ok = elemVisibility( str scene, str element, boolean visible, int animationTimeMS )

Make the specified scene element visible or invisible.

See also: action Element Visibility.

endCall

var ok = endCall()

Terminate the current call (if there is one).

encryptFile

var ok = encryptFile( str path, str keyName, bool rememberKey, bool shredOriginal )

Encrypt the specified file using the encryption parameters specified in Menu / Prefs / Action.

If rememberKey is set, the entered passphrase will be reapplied automatically to the next encryption/decryption operation with the specified keyName.

If shredOriginal is specified, the original file will be overwritten several times with random bits if encryption is successful.

See Also: Encryption in the Userguide, Encrypt File action.

enterKey

var ok = enterKey( str title, str keyName, bool showOverKeyguard, bool confirm, str background, str layout, int timeoutSecs )

Show a dialog to enter the passphrase for the specified keyName. The JavaScript waits until the dialog has been dismissed or the timeout reached.

See Also: Encryption in the Userguide

filterImage

bool ok = filterImage( str mode, int value )

Filter an image previously loaded into Tasker's image buffer via loadImage()

Possible values of mode are:

  • bw: convert to black & white, using value as a threshold
  • eblue: enhance blue values by value
  • egreen: enhance green values by value
  • ered: enhance red values by value
  • grey: convert to greyscale, value is unused
  • alpha: set pixel alpha (opposite of transparency) to value

value should be 1-254.

flipImage

bool ok = flipImage( bool horizontal )

Flip an image previously loaded into Tasker's image buffer via loadImage()

If horizontal is false, the image is flipped vertically.

exit

exit()

Stop execution of the JavaScript.

flash

flash( str message )

Flash a short-duration Android 'Toast' message.
flashLong

flashLong( str message )

Flash a long-duration Android 'Toast' message.
getLocation

var ok = getLocation( str source, bool keepTracking, int timeoutSecs )

Try to get a fix of the current device location.

source must be one of gps, net or any.

If keepTracking is set, the specified source(s) will be left tracking with the purpose of providing a much quicker fix next time the function is called.

Fix coordinates are stored in the global Tasker variables %LOC (GPS) and/or %LOCN (Net). The value can be retrieved with the global function. Several other parameters of the fix are also available, see Variables.

Example


	var lastFix = global( 'LOC' );
	if ( 
		getLocation( 'gps' ) &&
		( global( 'LOC' ) != lastFix ) 
	) {
		flash( "New fix: " + global( 'LOC' ) );
	}

See also: action Get Location, function stopLocation.

getVoice

str result = getVoice( str prompt, str languageModel, int timeout )

Get voice input and convert to text.

result is 'undefined' if the voice acquisition failed, otherwise it's an array of possible matching texts.

prompt is a label for the dialog that is shown during voice acquisition.

languageMode gives the speech recognition engine a clue as to the context of the speech. It must be one of web for 'web search' or free for 'free-form'.

goHome

goHome( int screenNum )

Go to the Android home screen. screenNum is not supported by all home screens.

haptics

var ok = haptics( bool onFlag )

Enable/disable system setting Haptic Feedback.

hideScene

var ok = hideScene( str sceneName )

Hide the named scene if it's visible.

global
var value = global( str varName )

Retrieve the value of a Tasker global variable. Prefixing the name with % is optional.

listFiles

str files = listFiles( str dirPath, bool hiddenToo )

List all files in the specified dirPath.

files is a newline-separated list of subfiles.

If hiddenToo is specified, files starting with period are included, otherwise they are not.

Example:

	var files = listFiles( '/sdcard' );
	var arr = files.split( '\n' );
	flash( 'Found ' + arr.length + ' files' );
loadApp

var ok = loadApp( str name, str data, bool excludeFromRecents )

Start up the named app.

Name can be a package name or app label, it's tested first against known package names. Note: app label could be localized to another language if the script is used in an exported app.

Data is in URI format and app-specific.

When excludeFromRecents is true, the app will not appear in the home screen 'recent applications' list.

loadImage

var ok = loadImage( str uri )

Load an image into Tasker's internal image buffer.

The following uri formats are currently supported:

  • file:// followed by a local file path

See also Load Image action.

lock

var ok = lock( str title, str code, bool allowCancel, bool rememberCode, bool fullScreen, str background, str layout )

Show a lock screen, preventing user interaction with the covered part of the screen. The JavaScript waits until the code has been entered or the lock cancelled (see below).

local
var value = local( str varName )

Retrieve the value of a Tasker scene-local variable. Prefixing the name with % is optional.

This function is only for use by JavaScript embedded in HTML and accessed via a WebView scene element.

mediaControl
var ok = mediaControl( str action )

Control media via simulation of hardware buttons.

Possible actions are next, pause, prev, toggle or stop.

micMute
var ok = micMute( bool shouldMute )

Mute or unmute the device's microphone (if present),

mobileData
var ok = mobileData( bool set )

Enable or disable the system Mobile Data setting.

See also: action Mobile Data

musicBack
var ok = musicBack( int seconds )

Skip back by seconds during playback of a music file previously started by musicPlay.

See also: musicSkip, musicStop

musicPlay
var ok = musicPlay( str path, int offsetSecs, bool loop, str stream )

Play a music file via Tasker's internal music player.

stream to which audio stream the music should be played

This function does not not wait for completion.

The last 3 arguments may be ommitted, in which case they default to 0, false and media respectively.

See also: musicStop, musicBack, musicSkip

musicSkip
var ok = musicSkip( int seconds )

Skip forwards by seconds during playback of a music file previously started by musicPlay.

See also: musicBack, musicStop

musicStop
var ok = musicStop()

Stop playback of a music file previously started by musicPlay.

See also: musicBack, musicSkip

nightMode

var ok = nightMode( bool onFlag )

Turn on or off Android Night Mode.

popup

var ok = popup( str title, str text, bool showOverKeyguard, str background, str layout, int timeoutSecs )

Show a popup dialog. The JavaScript waits until the popup has been dismissed or the timeout reached.

performTask
var ok = performTask( str taskName, int priority, str parameterOne, str parameterTwo )

Run the Tasker task taskName.

Note that the JavaScript does not wait for the task to complete.

profileActive
bool active = profileActive( str profileName )

Whether the named Tasker profile is currently active. Returns false if the profile name is unknown.

pulse
bool ok = pulse( bool onFlag )

Enable or disable the Android Notification Pulse system setting.

readFile
var contents = readFile( str path )

Read the contents of a text file.

reboot
var ok = reboot( str type )

Reboot the device.

type is one of normal, recovery or bootloader. It can be ommitted and defaults to normal.

Requires a rooted device.

See also: function shutdown

resizeImage
var ok = resizeImage( int width, int height )

Scale the current image in Tasker's image buffer to the specified dimensions.

rotateImage
var ok = rotateImage( str dir, int degrees )

Rotate the current image in Tasker's image buffer.

dir must be one of left or right. degrees must be one of 45, 90, 135 or 180.

saveImage
var ok = saveImage( str path, int qualityPercent, bool deleteFromMemoryAfter )

Save the current image in Tasker's image buffer to the specified file path.

Save Image action.

say
var ok = say( str text, str engine, str voice, str stream, int pitch, int speed )

Cause the device to say text out loud.

The script waits for the speech to be finished.

sendIntent
var ok = sendIntent( str action, str targetComp, str package, str class, str category, str data, str mimeType, str[] extras );

Send an intent. Intents are Android's high-level application interaction system.

Any parameter may be specified as undefined.

  • targetComp: the type of application component to target, one of receiver, activity or service. Defaults to receiver.
  • package: the application package to limt the intent to
  • class: the application class to limit the intent to
  • category: one of none, alt, browsable, cardock, deskdock, home, info, launcher, preference, selectedalt, tab or test, defaults to none
  • extras: extra data to pass, in the format key:value. May be undefined. Maximum length 2.

See also: action Send Intent.

sendSMS
var ok = sendSMS( str number, str text, boolean storeInMessagingApp );

Send an SMS.

See also: action Send SMS

setAirplaneMode
var ok = setAirplaneMode( bool setOn )

Enable or disable Airplane Mode.

Get the current value with:

var enabled = global( 'AIR' );

See also: function setAirplaneRadios

setAirplaneRadios
var ok = setAirplaneRadios( str disableRadios )

Specify the radios which will be disabled when the device enters Airplane Mode.

disableRadios is a comma-separated list with radio names from the following set: cell, nfc, wifi, wimax, bt.

Get the current value with:

var radios = global( 'AIRR' );

See also: function setAirplaneMode

setAlarm
var ok = setAlarm( int hour, int min, str message, bool confirmFlag )

Create an alarm in the default alarm clock app.

confirmFlag specifies whether the app should confirm that the alarm has been set.

message is optional.

Requires Android version 2.3+.

setAutoSync
var ok = setAutoSync( bool setOn )

Enable or disable the global auto-sync setting.

scanCard

var ok = scanCard( str path )

Force the system to scan the external storage card for new/deleted media.

If path is defined, only that will be scanned.

See also: action Scan Card

setBT

var ok = setBT( bool setOn )

Enable or disable the Bluetooth radio (if present).

Test BT state with:

if ( global( 'BLUE' ) == "on" ) { doSomething(); }

setBTID

var ok = setBTID( str toSet )

Set the bluetooth adapter ID (the name as seen by other devices).

setGlobal
setGlobal( str varName, str newValue )

Set the value of a Tasker global user variable. Prefixing varName with % is optional.

setKey
var ok = setKey( str keyName, str passphrase )

Set the passphrase for the specified keyName.

See Also: Encryption in the Userguide.

setLocal
setLocal( str varName, str newValue )

Set the value of a Tasker scene-local user variable. Prefixing varName with % is optional.

This function is only for use by JavaScript embedded in HTML and accessed via a WebView scene element.

setClipboard
var ok = setClipboard( str text, bool appendFlag )

Set the global system clipboard.

Test the value with:

var clip = global( 'CLIP' );

settings
var ok = settings( str screenName )

Show an Android System Settings screen.

screenName must be one of all, accessibility, addacount, airplanemode, apn, app, batteryinfo, appmanage bluetooth, date, deviceinfo, dictionary, display, inputmethod, internalstorage, locale, location, memorycard, networkoperator, powerusage, privacy, quicklaunch, security, mobiledata, search, sound, sync, wifi, wifiip or wireless.

setWallpaper
var ok = setWallpaper( str path )

Set the system home screen wallpaper.

setWifi

var ok = setWifi( bool setOn )

Enable or disable the Wifi radio (if present).

Test wifi state with:

if ( global( 'WIFI' ) == "on" ) { doSomething(); }

shell
var output = shell( str command, bool asRoot, int timoutSecs )

Run the shell command command.

asRoot will only have effect if the device is rooted.

output is 'undefined' if the shell command failed. It's maximum size is restricted to around 750K.

showScene
var ok = showScene( str name, str displayAs, int hoffset, int voffset, bool showExitIcon, bool waitForExit )

Show the named scene, creating it first if necessary.

  • displayAs: options: Overlay, OverBlocking, OverBlockFullDisplay, Dialog, DialogBlur, DialogDim, ActivityFullWindow, ActivityFullDisplay, ActivityFullDisplayNoTitle
  • hoffset, voffset: percentage vertical and horizontal offset for the scene -100% to 100% (not relevant for full screen/window display types)
  • showExitIcon: display a small icon in the bottom right which destroys the scene when pressed
  • waitForExit: whether to wait for the scene to exit before continuing the script
shutdown
var ok = shutdown()

Shutdown the device.

Requires a rooted device.

See also: reboot

silentMode
var ok = silentMode( str mode )

Set the system silent ('ringer') mode.

mode must be one of off, vibrate or on

sl4a
var ok = sl4a( str scriptName, boolean inTerminal )

Run a previously created SL4A script.

soundEffects
var ok = soundEffects( bool setTo )

Setting the system Sound Effects setting (sound from clicking on buttons etc.

speakerphone
var ok = speakerPhone( bool setFlag )

Enable or disable the speakerphone function.

statusBar
var ok = statusBar( bool expanded )

Expand or contract the system status bar.

stayOn
var ok = stayOn( str mode )

Specify whether the device should remain on when power is connected.

Possible modes are never, ac, usb, any.

stopLocation
var ok = stopLocation()

Stop tracking a location provider. This is only relevant when a getLocation function has been previously called with the keepTracking parameter set.

systemLock
var ok = systemLock()

Turn off the display and activate the keyguard.

Requires Tasker's Device Administrator to be enabled in Android settings.

taskRunning
bool running = taskRunning( str taskName )

Whether the named Tasker task is currently running. Returns false if the task name is unknown.

takeCall

bool ok = takeCall();

Auto-accept an incoming call (if there is one).

takePhoto

bool ok = takePhoto( int camera, str resolution, str filePath, bool insertGallery )

Take a photo with the builtin camera.

type

var ok = type( str text, int repeatCount )

Simulate keyboard typing.

Requires a rooted device.

unzip
boolean ok = unzip( str zipPath, bool deleteZipAfter )

Unpack a Zip archive into the parent directory of the archive.

deleteZip causes the zip archive to be deleted after successful unpacking.

usbTether
usbTether( bool set )

Enable or disable USB tethering.

See also: action USB Tether

vibrate
vibrate( int durationMilliseconds )

Cause the device to vibrate for the specified time.

vibratePattern
vibratePattern( str pattern )

Cause the device to vibrate following the specified pattern, which consists of a sequence of off then on millisecond durations e.g.

500,1000,750,1000

wait for 500ms, vibrates 1000ms, wait for 750ms, then vibrate for 1000ms.

wait
wait( int durationMilliseconds )

Pause the script for the specified time.

Warning: may cause some preceeding functions not to complete in some situations. If in doubt, use JavaScript setTimeout() instead.

wifiTether
var ok = wifiTether( bool set )

Enable or disable Wifi tethering.

See also: action Wifi Tether

writeFile
var ok = writeFile( str path, str text, bool append )

Write text to file path.

If append is specified, the text will be attached to the end of the existing file contents (if there are any).

zip
boolean ok = zip( str path, int level, bool deleteOriginalAfter )

Zip a file or directory.

level is the desired compression level from 1-9, with 9 resulting in the smallest file and the longest compression time.

deleteOriginal causes path to be deleted if the zip operation is successful.

Notes

Audio Streams

Must be one of call, system, ringer, media, alarm or notification

Colours

Colours are specified in AARRGGBB hexadecimal format, with solid white being FFFFFFFF.

File Paths

File paths can be specified as either absolute (start with /) or relative (don't start with /).

Relative file paths are relative to the root of the external storage media (usually SD). So, for example, pics/me.jpg might resolve to /sdcard/pics/me.jpg.

Location Without Tears

This is an overview guide to choosing a method for fixing your location with Tasker. At the end are some advanced power-saving strategies.

Power / Accuracy Comparison

Method Power Usage Acc Need Net Need Wifi
State: Cell Near * *
Location: Net ** ** Y
Location: Net & Wifi*** */***** Y Y
State: Wifi Near **** ***** Y
Location: GPS ***** ***** Y

More stars mean higher power usage or higher accuracy (Acc).

Detail Comparison

State: Cell Near

Setup
Create a state context, select Phone then Cell Near. Click Update and walk around a bit to scan for cell towers nearby.
About
Uses information about the cell towers the phone uses for telephony to record and match a location.

When the display is off, frequency of checks is controlled by Menu / Prefs / Monitor / Display Off All Checks.

If your profile keeps deactivating, go back to the Cell Near state and click the magnifying glass icon to check for cells you may have missed in your scan.

Plus / Minus
  • (+) virtually no extra power on top of power needed for normal phone service
  • (+) when the display is on, context updates as soon as the tower is visible
  • (+) when the display is off, only one check period is needed to determine context exit
  • (-) highly inaccurate
  • (-) must be physically at the location in order to record it

Location: Net

Setup
Create a location context, and deselect GPS.
About

Net location accuracy varies greatly. It's very important that you create a large radius around the spot you wish to detect.

Frequency of checks is controlled by Menu / Prefs / Monitor / Network Location Check (screen on) and Menu / Prefs / Monitor / Display Off All Checks.

More Info.
Plus / Minus
  • (+) extremely low (extra) power (IF network is available anyway)
  • (-) requires network and phone service
  • (-) highly inaccurate and variable fixes

Location: Net & Wifi

Setup
Create a location context and deselect GPS. Make sure your device's Wifi is turned on when you want a more accurate location fix.
About

Net location can be assisted by nearby access points when Wifi is turned on (Google has a map of APs for many areas).

Turn Wifi off when not needed to conserve power e.g. use a Time context to turn wifi off at night.

Plus / Minus
  • (+) very good accuracy in built-up areas for relatively low power usage
  • (-) must be physically at the location in order to record it

State: Wifi Near

Setup
Create a State context, click Wifi Near, fill in the SSID of an Access Point (AP) with the best signal near where you want to identify.
About
Wifi Near does regular Wifi Scans and will activate when it recognizes an AP you have configured is nearby. Note: you don't have to connect to the AP. You could configure e.g. the neighbours AP if the signal is strong enough.

Check the Wifi Toggle box if you don't want wifi on all the time. It will then be toggled when Tasker needs to do a scan.

Plus / Minus
  • (+) very good accuracy and reliability
  • (+) less power than GPS
  • (+) works indoors too
  • (-) need an AP nearby
Location: GPS
Setup
Create a location context, and deselect Net.
About

Frequency of GPS checks is controlled by Menu / Prefs / Monitor / GPS Check (screen on) and Menu / Prefs / Monitor / Display Off All Checks. Higher frequencies mean more battery usage but that location changes will be noticed more quickly.

When indoors, GPS will try a long time to get a signal, using a lot of battery. Adjust it at Menu / Prefs / Monitor / GPS Timeout. Make the timeout as low as you can until you start losing effectiveness.

More Info.
Plus / Minus
  • (+) highly accurate in the open air
  • (-) functions very poorly or not at all indoors. A bad side effect is that if you enter a building e.g. office while between the check times, it may never detect your new location until you leave.
  • (-) extreme power usage
  • (-) needs network to get a first fix

Advanced Strategies

Multiple Contexts
Tasker does not check high-power contexts until all lower-power contexts in the same profile are active. You can use this to reduce power consumption. For instance, if you use the Wifi Near state to detect coming home, you could add a Location: Net context to the same profile, so that wifi scanning will only take place when you are in the right neighbourhood.
Location Control
Disable GPS/Net location when they're not needed by creating a separate profile with e.g. a Time context which disables GPS during the night.

This works because Location contexts assume you are in the same location until there is a fix which says otherwise.

Pattern Matching

What's Pattern Matching ?

With Pattern Matching, you specify a pattern which tells Tasker what text you wish to match. For instance, if you want to match any telephone number starting with 0135, you can specify the simple match 0135*. * is a special character which matches any number of any character.

Tasker has two type of matching, Simple Matching and more advanced Regex Matching.

Simple Matching

Simple matching is designed to be easy for non-technical people to use.

Where's It Used ?

Simple Matching is used in the following places:
  • in the If condition of an action, when the ~ (match) or !~ (not match) operators are specified.
  • in text paremeters of State and Event contexts
  • some other places :-)

Matching Rules

  • if a pattern is left blank, it will match against anything
  • if it is not blank it must match the whole target text
  • / means 'or', it divides up multiple possible matches
  • a * will match any number of any character. It's not possible to specifically match a * character.
  • a + will match one or more of any character. It's not possible to specifically match a + character.
    Beware: the condition '%var matches +' will be true if %var has not been assigned a value, because Tasker does not replace variables which do not have a value.
  • matching is case-insensitive (magic will match with MagiC) unless the pattern contains an upper-case letter e.g. Magic* will not match against magically, but it will match against Magic Roundabout
  • a ! at the very start of a match means not e.g. !*Magic*/*Yellow* matches anything not containing the words Magic or Yellow
  • it is not possible to specifically match a ! character at the start of a target (but you could use *!

Examples

  • help matches help but not helper.
  • help* matches helper
  • *the* matches the (anywhere)
  • 123+ matches 123 and minimally one more character
  • + matches anything with at least one character (non-empty)
  • the*way matches the other way and the first way, amongst others
  • Help/*shell matchs Help or anything ending with shell, case-sensitively

Caller Matching

Caller matching (some events and states e.g. Incoming Call) is handled slightly differently.
  • C:ANY matches the telephone number of any contact
  • C:FAV matches the telephone number of any favourite (starred) contact
  • Otherwise: otherwise a match is attempted using the general matching rules against both the caller phone number and the associated contact's name (if there is one).

Examples:

  • !C:ANY matches a number not belonging to a contact
  • 077*/Geoff* matches a number starting with 077 or belonging to a contact whose names starts with Geoff
  • C:FAV/0123456789 matches any favourite contact or the telephone number 0123456789

Regular Expression Matching

Regular expressions are similar to simple matching patterns but have many more features and are much harder for non-technical people.

Where's It Used ?

Regex Matching is available:
  • in the If condition of an action, when the ~R or !~R operators are specified.
  • in the Variable Search Replace action
  • in the condition of a Variable Value state

Matching Rules

Standard Java regular expression matching is applied. The Android Developer site has a
reference page.

Maths

Where Is Maths Used ?

  • When you do Variable Set and click the Do Maths checkbox
  • With the If action, if you select a mathematical comparison like < or =
  • With individual action conditions when a mathematical comparison is selected

What's Available

Tasker uses the
MathEval library by Lawrence PC Dol.

Operators

  • + - * / - the basic operators
  • % - modulus
  • ^ - power
Constants
  • E - the base of the natural logarithms
  • EUL - Euler's Constant
  • LN2 - log of 2 base e
  • LN10 - log of 10 base e
  • LOG2E - log of e base 2
  • LOG10E - log of e base 10
  • PHI - the golden ratio
  • PI - the ratio of the circumference of a circle to its diameter
Functions
Functions take their argument in parenthesis e.g. sin(90)
  • abs - absolute value
  • acos - arc cosine; the returned angle is in the range 0.0 through pi
  • asin - arc sine; the returned angle is in the range -pi/2 through pi/2
  • atan - arc tangent; the returned angle is in the range -pi/2 through pi/2
  • cbrt - cube root
  • ceil - smallest value that is greater than or equal to the argument and is an integer
  • cos - trigonometric cosine
  • cosh - hyperbolic cosine
  • exp - Euler's number e raised to the power of the value
  • expm1 - ex-1
  • floor - largest value that is less than or equal to the argument and is an integer
  • getExp - unbiased exponent used in the representation of val
  • log - natural logarithm (base e)
  • log10 - base 10 logarithm
  • log1p - natural logarithm of (val+1)
  • nextup - floating-point value adjacent to val in the direction of positive infinity
  • round - closest 64 bit integer to the argument
  • roundhe - double value that is closest in value to the argument and is equal to a mathematical integer, using the half-even rounding method.
  • signum - signum function of the argument; zero if the argument is zero, 1.0 if the argument is greater than zero, -1.0 if the argument is less than zero
  • sin - trigonometric sine
  • sinh - hyperbolic sine
  • sqrt - correctly rounded positive square root
  • tan - trigonometric tangent
  • tanh - hyperbolic tangent
  • todeg - converts an angle measured in radians to an approximately equivalent angle measured in degrees
  • torad - converts an angle measured in degrees to an approximately equivalent angle measured in radians
  • ulp - size of an ulp of the argument

Power

Internally, Tasker does its best to keep power usage down. Following are some macro-strategies to achieve this.

Context Monitoring

When a profile contains multiple contexts, power is saved by only monitoring for changes in order of the least-power-hungry first. For example, in a profile with a Time and App context, Tasker will not decide that it needs to monitor for a changing application unless the Time context is active (because the profile cannot become active until both contexts are active).

Tasker rates contexts for power-hungriness in the following (ascending) order:

  • Other State
  • Day / Time
  • Calendar Entry State
  • Cell Near State
  • App
  • Network Location
  • Wifi Near State
  • GPS Location
  • Proximity Sensor / Gesture Event / Orientation State (accelerometer activation)

Items at the bottom of the list won't become eligible for monitoring until all items further up the list are active.

Display-Off Checks

When the display is off, all necessary 'active' checks (GPS/Net Location, Wifi Near, App) are done at the same time so that the device is awake for as short a time as possible. See Display Off Timings in Menu / Prefs / Monitor for the frequency and maximum duration of these checks.

Settings

What's A Setting ?

Settings are actions like Display Brightness and Ringer Volume whose effects are reversed by Tasker when the profile(s) which applied them are no longer active.

Settings have a cog icon next to them. Normal actions have a lightning bolt.

Single Profile

When a setting is applied by the profile's Enter Task, its value is restored after the profile becomes inactive again. For example, if the ringer volume is at 7 and is set to 0 in the Enter Task, when the profile becomes inactive it is automatically set back to 7.

In other words, settings are only valid for the lifetime of their profiles.

Multiple Profiles

When multiple profiles that affect a setting are active simultaneously:
  1. the setting has the value from the most recently activated profile
  2. when all profiles are inactive, the setting has the value from before any profile was active

Special Cases

  • if a setting is changed by the Exit Task the profile will never save the setting's initial value.
  • settings changed in an instant profile (one with an event context or repeating/non-ranged time context) remain changed after the event. The reasoning is that there is no point in changing the setting for the half-second that the event lasts.

Notes

  • settings are not actively maintained. If something else changes the setting once the Enter task has run, it's not the case that this is detected and the Enter task value automatically reapplied.
Complicated, huh ?

Variables

General

A variable is a named value which changes over time e.g. the level of the battery, the time of day.

When Tasker encounters a variable name in a text, it replaces the name with the current value of the relevant variable before carrying out the action.

The main purposes of variables are:

Built-In Variables

The values of Built-In variables are updated by Tasker. Their names always use all-capital letters.
  • Airplane Mode Status
    (dynamic)
    %AIR
    Whether Airplane Mode is on or off
  • Airplane Radios
    %AIRR
    A comma-separated list of the radios which will be disabled when entering Airplane Mode.
    Common radio names are: bluetooth, cell, nfc, wifi, wimax.
  • Battery Level
    %BATT
    Current device battery level from 0-100.
  • Bluetooth Status (dynamic)
    %BLUE
    Whether Bluetooth is on or off.
  • Calendar List
    %CALS
    Newline-separated list of calendars available on the device.
    Each entry is in the format calendarprovider:calendarname.
    Example usage:
    	Variable Set, %newline, \n
    	Variable Split, %CALS, %newline
    	Flash, %CALS(#) calendars, first one is %CALS(1)
    For the sign \n, press carriage-return on the keyboard.
  • Calendar Event Title / Descr / Location %CALTITLE / %CALDESCR / %CALLOC
    The title, description and location of the current calendar event, if there is one. If there are multiple current calendar events the variables refer to the shortest.
    Tip: find other details about the current event(s) using the Misc / Test action, specifying %TIMES for the data.
  • Call Name / Number/ Date / Time (In) (dynamic, monitored)
    %CNAME / %CNUM / %CDATE / %CTIME
    The caller name, number, date and time of the current (if a call is in progress) or last call received.
    Caller number is 0 if it's unknown.
    Caller name is ? if it's unknown (probably because the caller number was blocked) and set to the caller number if the contact couldn't be looked up. It's unavailable on Android versions prior to 2.0.
  • Call Name / Number/ Date / Time / Duration (Out)(dynamic, monitored)
    %CONAME / %CONUM / %CODATE / %COTIME / %CODUR
    The called name, number, date and time of the last (not the current) outgoing call made.
    Called Name is set to the called number if the contact couldn't be looked up. It's unavailable on Android versions prior to 2.0.
  • Cell ID (dynamic,monitored)
    %CELLID
    The current cell tower ID if known.
    If you are using a Cell Near state, note that sometimes the Cell Near state will stay active even though %CELLID reports that the tower ID is unknown or invalid; that is because Cell Near only responds to valid IDs to prevent the state becoming inactive e.g. due to a service interruption.
  • Cell Signal Strength (dynamic,monitored)
    %CELLSIG
    The current phone signal level from 0-8 inclusive on a rougly linear scale. On some CDMA phones, the level will rise in steps of 2 (0,2,4,6,8). The value is -1 if the value is unknown or there is e.g. no service.
    There is a bug with some Android versions that the reported signal strength is not updated until the device is turned off and on.
  • Cell Service State (dynamic,monitored)
    %CELLSRV
    The current phone service state. One of unknown, service, noservice, emergency, nopower.
  • Clipboard Contents
    %CLIP
    The current contents of the system clipboard.
  • CPU Frequency
    %CPUFREQ
    The current frequency CPU 0 is running at. See also: CPU Control.
  • CPU Governor
    %CPUGOV
    The current governor controlling the frequency of CPU 0. See also: CPU Control.
  • Date
    %DATE
    Current human-readable date.
  • Day of the Month
    %DAYM
    Current Day of the Month, starting at 1.
  • Day of the Week
    %DAYW
    Current Day of the Week starting with Sunday.
  • Device ID / Manufacturer / Model / Product
    %DEVID / %DEVMAN / %DEVMOD / %DEVPROD
    The ID, manufacturer, model and product name of the device.
    Note: ID is not a unique identifier for the device, but rather for the hardware of the device. See also: %DEVTID.
  • Device Telephony ID
    %DEVTID
    Returns the unique telephony-based ID for the device (e.g. for GSM the IMEI, for CDMA the MEID or ESN).
    Not available on all devices.
  • Display Brightness %BRIGHT
    Current screen brightness, 0-255. On some devices, if the Android setting Auto Brightness is enabled, the value will always be 255.
  • Display Timeout %DTOUT
    Current system screen timeout (seconds).
  • Email From / Cc / Subject / Date / Time (dynamic)
    %EFROM / %ECC / %ESUBJ / %EDATE / %ETIME
    The From, Cc, Subject, Received Date and Received Time of the last email received by the K9 email agent.
  • Free Memory
    %MEMF
    System free memory remaining in MB.
  • GPS Status
    (monitored,dynamic Gingerbread+) %GPS
    Whether the system GPS receiver is on or off.
  • HTTP Response Code / Data / Content Length
    (dynamic)) %HTTPR / %HTTPD / %HTTPL
    Values from the last HTTP POST/GET action.
    If the server doesn't return a content length, %HTTPL will be calculated from the returned data where possible.
  • Input Method
    %IMETHOD
    The current active input method. Consists of 4 parts separated by commas: Method Name, SubType Name, Mode, Locale.
    To access particular parts, use the Variable Split action.
  • Keyguard Status
    %KEYG
    Whether the Keyguard is on or off
  • Last Application
    %LAPP
    The name of the application that was in the foreground before the current one e.g. Maps.
  • Last Photo
    %FOTO
    The filesystem path to the last photo taken by Tasker or the standard system camera application.
  • Light Level (dynamic,monitored)
    %LIGHT
    The last recorded light level in lux.
    Note that Android does not return a value until the light level changes, so to test the sensor is working you should put it near a bright light initially.
    May not change when the device display is off, see Menu / Prefs / More / Display Off Monitoring / Light Sensor.
  • Location (dynamic)
    %LOC
    The latitude and longitude of the last GPS fix.
    See note.
  • Location Accuracy (dynamic)
    %LOCACC
    The accuracy in metres of the last GPS fix.
    See note.
  • Location Altitude (dynamic)
    %LOCALT
    The altitude in metres of the last GPS fix, or 0 if unavailable.
    See note.
  • Location Speed (dynamic)
    %LOCSPD
    The speed in metres/second at the last GPS position fix or 0 if unavailable.
    See note.
  • Location Fix Time Seconds (dynamic)
    %LOCTMS
    The time in seconds of the last GPS fix. To get age of fix, take this away from %TIMES.
    This value is not set until an offset of the GPS time from the fixed time has been calculated (should be after the first GPS fix) because the value is meaningless until that point.
    See note.
  • Location (Net) (dynamic)
    %LOCN
    The latitude and longitude of the last network location fix.
    See note.
  • Location Accuracy (Net) (dynamic)
    %LOCNACC
    The accuracy in metres of the last network location fix.
    See note.
  • Location Fix Time (Net) (dynamic)
    %LOCNTMS
    The time in seconds of the last net location fix. To get age of fix, take this away from %TIMES.
    See note.
  • Magnetic Field Strength (monitored,dynamic)
    %MFIELD
    The total magnitudes in micro-Teslas of the magnetic fields acting on all three axis of the devices sensor.
    Updated once per second.
    See Also: state Magnetic Field.
  • Music Track (dynamic))
    %MTRACK
    The current playing music track, supported for:
    • Tasker actions Music Play and Music Play Dir
    • Built-in Android music-player, probably not on all devices however
    • Power AMP
    • BeyondPod (Tasker v1.2.1+)
    • Phantom Music Control Pro
    Priority: if both Tasker and one of the other supported apps are playing simultaneously, the non-Tasker track will be shown. If more than one of the other supported apps is playing simultaneuosly, behaviour is unspecified.
    Notes:
    • if you don't have a supported player, you could try Phantom Music Control Pro, which supports a lot of players and should pass the info on to Tasker
    • pausing a track clears the variable, unpausing sets it again
    • your music player may need an option enabled in order to broadcast the track information, or the broadcast may only be available in a 'pro' version
  • Muted
    %MUTED
    Whether the microphone is currently muted (on) or not (off).
  • Night Mode
    %NIGHT
    The current Android Night Mode.
    One of on, off or auto.
    If auto, Android will decide whether it should be in Night Mode itself.
  • Notification Title (monitored, dynamic)
    %NTITLE
    The title of the last notification shown in the status bar. Requires Tasker's accessibility server to be running (see Android Accessibility Settings). Notifications generated by Tasker are not shown. Notifications for some apps will not register i.e. the variable will be blank.
    Not available on Cupcake.
  • Phone Number
    %PNUM
    The current phone number of the device, if it's in service.
    On some phones it doesn't work (Android limitation), seems related to the type of SIM.
  • Pressure (monitored,dynamic)
    %PRESSURE
    The current air pressure on the device in millibars.
    May not change when the device display is off, see Menu / Prefs / Monitor / Display Off Monitoring / Pressure Sensor.
  • Profiles Active (dynamic)
    %PACTIVE
    A comma-separated list of the currently active, named profiles in activation order. Duplicate names will appear on the list only once. The list always starts and ends with a comma to make matching easier, if it's not empty.
  • Profiles Enabled (dynamic)
    %PENABLED
    A comma-separated list of the currently enabled, named profiles in creation order. Duplicate names will appear on the list only once. The list always starts and ends with a comma to make matching easier, if it's not empty.
  • Roaming
    %ROAM
    on if device is roaming on the current telephone network, otherwise off.
  • Root Available
    %ROOT
    yes if root functions are available on this device, otherwise no.
  • Screen (dynamic)
    %SCREEN
    Whether the screen is on (value on) or off (value off).
  • SDK Version
    %SDK
    The numeric Android SDK version of the device.
  • Silent Mode (dynamic)
    %SILENT
    The current state of silent mode: off, vibrate or on.
  • SIM Serial Number
    %SIMNUM
    The serial number of the SIM card, if one is present and accessible.
    If the SIM has not been unlocked it will not be available.
  • SIM State
    %SIMSTATE
    The current state of the SIM card.
    One of unknown, absent, pinrequired, pukrequired, netlocked or ready.
  • Speakerphone
    %SPHONE
    Whether the speakerphone is on or off
  • Speech (dynamic)
    %SPEECH
    The current utterance as a result of a Say or Say File action, if applicable.
  • Task Queue Seconds (dynamic)
    %QTIME
    The number of seconds since the current task first started executing. Note that tasks can be interrupted by higher priority tasks, so this number is not necessarily the total run-time of the task.
  • Tasks Running (dynamic)
    %TRUN
    A comma-separated list of any named tasks which are currently running. The list always starts and ends with a comma to make matching easier, if it's not empty.
  • Telephone Network (dynamic, monitored)
    %TNET
    The current telephony network operator the device is using.
    May be unreliable on CDMA networks
  • Text From/Date/Subject/Time (monitored)
    %SMSRF / %SMSRN / %SMSRB / %MMSRS / %SMSRD / %SMSRT
    The sender address, name, body, subject, date and time of the last text (SMS or MMS) received.
    These variables will be empty until the first time a text is received after they have been referenced because Tasker does not monitor texts unless it's needed.
    Name is set to sender address of no contact could be looked up. It's unavailable on Android versions prior to 2.0.
    Body (%SMSRB) is only set for SMSs.
    Subject (%MMSRS) is only set for MMSs.
  • Time
    %TIME
    Current human-readable time separated by a period e.g. 10.59
  • Time MilliSeconds
    %TIMEMS
    The current time in milliseconds.
    (milliseconds since some time in January, 1970, if you must know).
  • Time Seconds
    %TIMES
    The current time in seconds.
    (seconds since some time in January, 1970, if you must know).
  • UI Mode (dynamic,monitored)
    %UIMODE
    The current Android UI mode.
    One of car, desk or normal.
  • Uptime Seconds
    %UPS
    The number of seconds since the device last booted.
  • Volume - Alarm/Call/DTMF/Media/Notification/Ringer/System (dynamic)
    %VOLA / %VOLC / %VOLD / %VOLM / %VOLN / %VOLR / %VOLS
    Current audio channel volume level.
    On some devices, volume changes are not picked up dynamically, on others not when using the phone app.
  • WiFi Info
    %WIFII
    When connected to an Access Point (AP), shows human-readable data about the AP. When not connected, show details of the most recent Wifi scan results for nearby APs.
  • WiFi Status (dynamic)
    %WIFI
    Whether WiFi is on or off. Note: if WiFi is enabling or disabled, in fact anything but enabled, it's classed as off.
  • Wimax Status
    %WIMAX
    Whether Wimax is on or off. Note: if Wimax is enabling or disabled, in fact anything but enabled, it's classed as off.
  • Window Label (monitored)
    %WIN
    The label of the current window, which could be a full-screen activity or a dialog.
    Not set if the label is unknown.
    For some windows, the label might be that of the first item in the window e.g. a menu entry or even a button.
General Notes

Variables marked dynamic in the list above trigger changes in Variable Value states and Variable Set events whenever their value changes.

Variables marked monitored will cause the relevant monitor to startup to track their state when they are used in contexts or tasks which are used by widgets or enabled profiles. For instance, %CELLS used in a Flash action will cause cell location to be tracked.

Limitation: monitored variables cannot be detected in anonymous shortcuts.

Note On Location Variables

When the relevant provider (Net or GPS) of a location context is active, these variables report the values from the provider, which may be more recent than Tasker has seen if other applications are asking for location.

When the relevant provider is not active, these variables report the last values seen by Tasker, which could be the result of a Get Location action or of monitoring for a Location Context.

That means the the reported fix times could go backwards, if you turn off the location provider between two uses of the variables.

Location variables can also be manually updated by running the Get Location action.

User Variables

The action Variable Set (and several others) can be used to create new variables. Variable names have the following restrictions:
  • they must start with the % character
  • they are case-sensitive
  • then must at least a further 3 alphanumeric characters
  • they can also contain the underscore character (_) but not start or end with it
Global vs Local Variables
All built-in variables are global, meaning they are visible anywhere in Tasker (e.g. %WIFI)

User variables which have one or more capital letters in their name are also global (e.g. %Car)

However, user variables which have all-lower-case names (e.g. %fruit) are local, meaning they are only visible in the task in which they are used (or the scene in which they are used, if the task was launched from by a scene event).

In general, it's best to use local variables wherever possible because:

  • you know they won't be interfered with by other tasks
  • they are more efficient in several ways

Note: multiple copies of the same task running at the same time each have their own separate copy of their local variables.

Escaping Variable Names
If you want to prevent a variable name being replaced, put a \ in front of it e.g.
Variable Set, %new, \%old
Will set the value of %new to %old, not the value of %old.

In order to precede a variable name with a \ you can escape the backslash e.g.

Variable Set, %new, \\%old
Will set the value of %new to \ followed by the value of %old.
Variable Lifetime
The value a variable holds should last until Tasker is uninstalled if it is not changed by any task.
Uninitialized Variables

User-variables which have not had a value assigned do not have replacements carried out e.g. in the expression I love %fruit, if %fruit is uninitialized, the expression remains as it is, otherwise %fruit is replaced with the value.

Exception: uninitialized variables used in mathematical expressions are replaced with 0.

Variables In Plugins

Plugin developers can tell Tasker to replace variables it finds in plugin strings with their current Tasker value. If you have a plugin which doesn't support this, send the developer this URL
http://tasker.dinglisch.net/plugins.html

which has the relevant details.

Variable Arrays

Tasker supports pseudo-arrays.

They are especially useful when used with the For action, since you can perform a set of actions on each element in turn e.g. list a set of files then test each one.

Examples

If the four variables %arr1, %arr2, %arr3, %arr4 hold respectively a, b, c and d then we have an array with 4 elements. These variables can be used just like any other, however it is also possible to access them in special ways. Here are some examples:

  • %arr(#)
    The number of defined array elements (4 in this case)
  • %arr(#>)
    The index of the first defined array element, or 0 if none are defined (1).
  • %arr(#<)
    The index of the last defined array element, or 0 if none are defined (4)
  • %arr(#?b/c)
    A comma-separated list of the array indices (lowest to highest) with matching values, or 0 if none match (2,3 in the example)
  • %arr(>)
    The contents of the first defined array element (a)
  • %arr(<)
    The contents of the last defined array element (d)
  • %arr() or %arr(:)
    All of the array elements separated by commas (a,b,c,d)
  • %arr(2) or just %arr2
    The content of the element with index 2 (b)
  • %arr(2:4)
    Contents of defined elements with indices 2 to 4 (b,c,d)
  • %arr(:3)
    All the defined elements with indices up to 3 (a,b,c)
  • %arr(3:)
    All the defined elements with indices starting from 3 (c,d)
  • %arr(1:2)
    All the defined elements with indices from 1 to 2 (a,b)
Notes:
  • arrays will virtually always have all their elements defined so e.g. %arr(>) will be the same as %arr(1), %arr(#) will be the same as %arr(#<)
  • index specifiers can themselves be variables (e.g. %arr(1:%MAX) or %arr(#?%FINDME))
Creating An Array
  1. using Variable Split:
    Variable Set %arr a,b,c,d
    Variable Split %arr
    If your data has commas in it, you can separate the values with e.g. @ and specify @ also in the Variable Split action.
  2. by assigning individual elements with Variable Set:
    Variable Set, %arr3, c.
  3. using Array Push to add an initial element
  4. some other actions also create arrays for their results e.g. List Files.
Inserting Elements
Use the Array Push action.

The Fill Spaces parameter might need more explanation. It is only relevant if one or more of the array elements are undefined. As an example, if we have the array elements %arr1 and %arr3 containing apple and banana:

  • Array Push %arr1, 1, pear
    leaves %arr1, %arr2 and %arr4 containing pear, apple and banana.
  • but Array Push %arr2, 1, pear, Fill Spaces
    leaves %arr1, %arr2 and %arr3 containing pear, apple and banana.
Removing Elements

Use the Array Pop action. Note the difference between Array Pop and Variable Clear: Pop reduces the number of elements in the array, while Clear merely changes elements to undefined.

Example: if we have the array elements %arr1, %arr2, %arr3 containing apple,pear and banana:

  • Variable Clear %arr2
    leaves %arr1 and %arr3 containing apple and banana.
  • but Array Pop %arr2
    leaves %arr1 and %arr2 containing apple and banana.
Deleting An Array
Use Array Clear.

In most cases you could also use Variable Clear %arr* with Pattern Matching checked, but that would also delete variables called e.g. %arrTOODEETOO so Array Clear is safer.

Array Efficiency
Arrays are intended for convenience when processing high-level data, not for e.g. processing astronomical data. Doing thousands of array actions will likely take several seconds (although mostly due to the housekeeping work done by Tasker in-between each action rather than due to the array operations themselves).

In terms of storage efficiency, they are also fairly hopeless. You probably do not want to store tens of thousands of items in an array.

FAQ: How Do I... / Can I... ?


How can I contact the developer ?

There is a contact email given at Menu / Info / User Support. In general, this is intended for order and validation help, which is often confidential, and other private issues.

Please post Tasker usage queries/problems in the Tasker Forum where the developer is very active.

Advantages:

  • the user community has more experience than the developer with using Tasker
  • other people can benefit if your problem is solved
  • the developer has more time for fixing bugs and adding features, which benefits everyone

How can I send the developer a short-term log ?

If your problem covers a short time-frame (arond 5-10 minutes) e.g. a crash
  • download aLogcat, free from Play Store
  • deselect Menu / Prefs / UI / Beginner Mode in Tasker
  • enable Menu / Prefs / Misc / Debug to System Log in Tasker
  • do whatever it is that causes the problem
  • go to aLogCat, click Menu / Pause then Menu / Send
  • the destination email is listed in Menu / Info / User Support in Tasker
  • include at the top a brief description of the problem that the email concerns

Try to make the log as soon as possible after the problem occurs.

How can I send the developer a long-term log ?

If your problem covers a longer time-frame, you'll need an SD card log because the system log fills up very quickly:
  • you'll need an SD card inserted
  • deselect Menu / Prefs / UI / Beginner Mode in Tasker
  • enable Menu / Prefs / Misc / Debug to SD Card in Tasker
  • when the problem has occured, email the file /sdcard/Tasker/log.txt to the developer email listed at Menu / Info / User Support
  • include at the top a brief description of the problem that the log concerns

Can I change an app's settings / press it's buttons ?

Standard Android doesn't allow an app to change, poke, prod or peek at anything within another app, including simulating keypresses and screen taps.

On a rooted device, you can use some of the actions in the Input category to navigate around an app, click on UI elements and enter text automatically.

Can I control / respond to events in application X with Tasker ?

If a Tasker user wants to automate some aspect of another program they use, they just need to point the developer of the other app at the Tasker Developer Page and nag at him/her a bit.

How can I stop Tasker restoring a setting ?

Tasker will restore any setting which is changed in the Enter task of a profile. There are four ways to prevent this:
  1. deselect the Restore Settings in the Profile Properties of the relevant profile.
  2. if you set the same setting in the Exit task of the profile Tasker will take that as a hint that the previous value shouldn't be restored.
  3. create a separate task to run the settings actions and in the Enter task of the profile do a Perform Task action (from the category Tasker) on that separate task. This trick is known as Stefan's Setting Sidestep.
  4. you can use the corresponding Javascriptlet function instead of the setting action. Settings made in Javascriptlets are not restored.

Can Tasker detect volume button presses ?

No, sorry, that's not possible ATM.

The closest you can get is to detect changes in a volume variable (e.g. %VOLR for the ringer volume) via event Variable Set.

Can Tasker be used from the SD card (apps2sd) ?

No, sorry, that's not possible for several reasons relating to how Tasker works.

It's not that the developer 'can't be bothered to do it', it's because it's not possible.

Can I use Tasker to turn the screen on and off ?

Turning on, use the Display / Turn On action. Unfortunately, that action is inaccessible with Android 2.3+.

For turning off, you can use the Display / System Lock action with Android 2.0+.

For Android 1.6, you can set the Display Timeout to it's minimum (around 7 seconds) and then set it back to normal in response to a Display Off event.

How do I create my default settings ?

You don't have to configure 'default' settings in Tasker. The 'default' settings are how your device is configured before any Tasker profile becomes active. This 'default' is automatically restored as profiles become inactive.

Exception: changes to settings made in Exit tasks are not restored.

How can I run more than one task when a profile goes active ?

Add an action Perform Task from the category Tasker for each task that you want to run (don't click the Stop button).

Warning:: settings in the called tasks will not be restored by Tasker, only settings changed directly within the Enter task.

Can I hide the notification list entry when Tasker is running ?

If the notification is very annoying, it can be removed by disabling the Run In Foreground setting which can be found in Menu->Preferences->Monitor.

Please read the help text associated with this option first.

Can I change or remove the status bar icon when Tasker is running ?

You can change it with Menu / Prefs / Monitor / Notification Icon.

To remove it, select the first icon in the dialog (it's transparent).

What if I want a repeating time context, but I need to do something that takes a while ?

  • GPS On
  • Wait 3 minutes
  • GPS Off

How can I do something every minute ?

Set a repeat period of 2 minutes (the minumum allowed) and specify a task like this:

  • Perform Task, TaDa
  • Wait 1 Minute
  • Perform Task, TaDa

How do I specify 9:30AM on Monday and 10AM on Tuesday with the same profile ?

You can't, because the Time and Day subcontexts operate completely independent of each other. You have to specify two profiles and run the same Task(s) with each of them (by giving the task a name).

How do I specify weekend night-times ?

It's tempting to say:
Time: 23 - 09
Day: Friday or Saturday

But that won't work, because on Sunday at e.g. 3am the Day context (and hence the whole profile) won't be active.

For this kind of situation, you need to specify a profile for which morning you want to be active and another for which evenings. In the example, you want Friday and Saturday night plus Saturday or Sunday morning:

Time: 23 - 24
Day: Friday or Saturday
Time: 00 - 09
Day: Saturday or Sunday

How do I stop the screen dimming when I have the display Stay On set to e.g. 'With AC' ?

The screen dims around 10 seconds before the current Screen Off Timeout value is reached. You can set Screen Timeout (for the relevant context e.g. 'while docked') to Never (set all sliders to maximum) if you don't like that behaviour.

How can I stop Wifi Near toggling wifi on-off when the phone is in Airplane Mode ?

Add a state Airplane Mode to your profile and click the Invert button, which means if Airplane Mode is off.

Can I divert incoming calls ?

It's not possible to divert incoming calls via Android, but most Mobile Carriers accept special dialled sequences to do it before the call reaches your phone.

You can then use Tasker's Phone / Call action (with Auto Dial checked) to setup and cancel incoming call diversions.

The Wikipedia page on Call Forwarding is a good starting point.

How can I detect if Wifi is connected (not just enabled) ?

The 'standard' way is to use State Wifi Connected to set and clear your own variable with an enter and exit task respectively.

An alternative trick is to match the word connected or connection in the %WIFII variable (the actual word and lower/upper case changes with Android version).

How can I import/export individual profiles, tasks or scenes ?

Import:

Go to the main screen, long click on the tab for the type of thing you want to import.

Export:

  • ensure that Menu / Prefs / UI / Beginner Mode is unchecked
  • go to the main screen
  • long-click on the thing you want to export

How do I turn off the flashing notification LED ?

Use the Audio / Notification Pulse action.

If you're wondering what a flashing light is doing in the Audio section: ask Google, that's where they put it in Android Settings.

>How do I put my phone in Silent or Vibrate mode ?

Use action Audio / Silent Mode.

Do not try to do it with Volume Ringer or Vibrate on Ringer.

Can I automate sending of an SMS / Call through Google Voice ?

Not directly through Tasker. However,
Steelgirder Developments have (non-free) plugins which you can easily use with Tasker to accomplish this.

Steelgirder and the author of Tasker are agreed on working together wherever further integration of these plugins and Tasker is needed e.g. support for Tasker variables.

Can I change/remove the notification sounds for particular apps ?

Yes, but it's a little complicated, please see the
relevant forum post.

Can I silence all notifications except from particular applications ?

With Tasker versions from 1.0.10, you can try turning off all notifications (e.g. via Silent Mode or setting the Notification Volume to 0) and then using Tasker to do alerts for particular app notifications using the Notification event in the UI category.

Can I change the input method ?

On a rooted phone, yes, using the free Secure Settings plugin.

Consider also starring this feature request with Google.

How do I test whether I can reach the Internet (ping) ?


  HTTP Get URL (a known webpage), Continue Task On Error
  If [ %HTTPR = 200 ]
     ...
  Endif

How can I use whitespace (newline, tab etc) in action parameters ?

Tasker trims the start and end of all parameters to prevent whitespace causing problems. The only exception is the Variable Set action.

Therefore, if you want to use whitespace you should first assign it to a variable and then use the variable where you want the whitespace to appear:

Variable Set, %white, THISISANEWLINE
Flash, Here's a newline: %white

How can I run a task from a terminal login ?

am broadcast -a net.dinglisch.android.tasker.ACTION_TASK -e task_name YOUR_TASK_NAME

That's only possible on a rooted phone because otherwise there will be a permission problem.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FAQ: Usage Problems


Why won't Android let me uninstall Tasker ?

It's probably because you're using an action which needs Tasker's device administrator function (e.g. Display / System Lock).

You can disable it by going to Android Settings / Location & Security / Device Administration.

Why doesn't the Kill App action work in Android 2.2 like it used to ?

Google decided that the feature was being abused and causing more problems than it solved and it was therefore watered down.

From Tasker version 1.0.21 it's more effective again if you have a rooted device.

Why isn't GPS coming on for my profile with Time And GPS Location contexts ?

In order to save power, Tasker only activates context detection as it is needed. Therefore it will not attempt to fix your GPS location unless the Time context is active.

See the Power Usage section of the userguide for more details.

Why can't I select Tasker for an application context ?

This is considered too dangerous. A mistake could easily result in being unable to enter Tasker and therefore being unable to rectify the mistake.

Why does it take my Wifi Near state so long to exit ?

Wifi Near requires two check periods to pass without seeing the Access Point before the profile exits. This is intended to avoid the context activating and deactivating if the AP is briefly not visible.

Note also that there are different check periods for when the device is on or off, and by default the off-period is much longer than the on-period. See Menu / Preferences / Monitor/ Display On/Off Timings.

Why isn't Tasker detecting when my Location Context changes ?

Your radius is probably too small.

As an example, if you are not using GPS the accuracy of your fixes is probably around += 2km, so your radius should be also minimally 2km.

If you *are* using GPS, the accuracy may still be only +-400m in built-up areas.

Here's a good way to create a location context:

  • go to the geographical location you want a context for
  • make a new location context
  • deselect GPS if you don't want to use it
  • press Grab Fix, and wait till it's done

This will set your radius appropriate to the accuracy of the location providers at that spot.

If there's still nothing happening:

Why does Tasker mess up the app launching when I have an Application Context for it ?

Some applications are sensitive like this. Probably all you have to do is put as the first action in the Enter task the action Wait and give as a parameter e.g. 300ms. If that doesn't work keep increasing the value until it does.

That gives the application time to finish initializing before messing around with the screen brightness etc.

Why aren't my settings restored ?

Some possibilities:
  • if your profile sets setting x to on, then if x is already on when the profile goes active, it will be left at 1 when the profile exits. Test for this by putting an Alert / Notify action in the enter task to see what the original value was.
  • some other apps installed on the system can cause Tasker to be killed and therefore the original settings being forgotten e.g. this has been reported to be a problem with Titanium Backup.
  • similarly, if the system is rebooted suddenly, some devices aren't fast enough to save all the settings before the system turns off.

Why does my profile not do anything ?

Firstly, if are you using any of these other apps which have been reported as interfering try disabling or temporarily uninstalling them:
  • 'Task Killers'
  • Quick System Info
  • Autostarts

After that:

If your profile is activating but the task doesn't seem to do anything:

  • perhaps you are running a pirated version of Tasker ?
  • try enabling Menu / Prefs / More / Popup Warning/Errors to see if any errors are occuring (they may not be shown till you go back to the Tasker UI)
  • look in Menu / More / Run Log to see if the task is being carried out.
  • try a simple task like Alert / Vibrate or Alert / Flash
  • perhaps another profile is interfering: do Menu / Data / Backup, then delete all other profiles except the one that's not working

Why does nothing happen when I click a Tasker widget ?

Usually this is due to Tasker not being enabled, see the On/Off button in the first UI screen.

Why does Tasker crash when I try to create a Location Context ?

The likely cause is that you are running a non-standard Android ROM which doesn't contain the correct (or maybe any) Google Maps library.

Why can't I see any Tasker widgets in the home screen widget selector ?

This is almost always because you have Tasker installed on the SD card, which is just not possible due to several reasons related to how Tasker works.

Why doesn't my repeating Time Context work ?

It's important to understand that a repeating time context is a series of instant events.

Trying to combine a repeating time context with another context that does active monitoring usually won't work e.g.

Time: Repeating Every 5 Minutes
Task: Enable Wifi (no toggle)
State: Wifi Near
Task: XXX

Wifi Near is checked on a static schedule. You currently can't change the schedule dynamically, so the above two profiles will only do XXX when the 5 minute repeat happens to coincide with when Tasker is doing it's Wifi Near check.

Why aren't my exit tasks run / settings restored before the device shuts down ?

Android gives an app very little time to perform cleanup during shutdown, this is especially a problem on slow devices.

Therefore (as of 1.0.9), Tasker only attempts to run Variable Set, Clear, Add and Subtract actions when the device shuts down, since they take relatively little time.

In the future, Tasker will have some concept of default values which will then be restored when it starts after the device has booted again.

On Android 1.5 devices, Tasker cannot do anything at shutdown because the system does not send a notification.

Why does my location exit task fire multiple times ?

Probably the location Android reports is bouncing between a point inside your location radius and one outside. This is relatively unusual because Tasker has some built-in mechanisms to try and prevent it.

A quick fix is to add a Cooldown to your profile. Click on a context, select Profile then Properties and slide the Cooldown Time to 30 minutes.

The profile is then prevented from going active more than once every 30 minutes.

Why does my Cell Near state keep going inactive ?

Even when your phone is motionless, it will probably still often switch between different cell towers. Going to a different room in your house may involve a whole different set of cell towers.

When you notice your Cell Near state going inactive at your location (and assuming you still have a signal), launch Tasker, click on the Cell Near context and edit it. Click Scan and you should immediately see a new Cell added to the list. Click Done and then Apply and your context should go active again.

Sometimes the new cell will only be visible for a few seconds and will not appear when you press scan. In that case, press the Recent button and select it manually from the list.

Why doesn't Notify LED work ?

From the action help (hint hint):
  • not all devices support all colours. Many devices will only support red and green. In general, colours near the top of the list are more likely to be supported.
  • some devices will only flash the LED when the device is off at the time the notification is received.

Why do Tasker widgets disappear after a reboot on my Wildfire ?

This is a bug on some Wildfire firmware version.

It's not possible for the Tasker developer to work around, but is reported as fixed in version 1.25.405.1 of the firmware.

Why isn't my docking station detected ?

Some docking stations just aren't recognized as such (Android doesn't indicate that a docking station has been connected).

Depending on other things you connect your device to, you might be able to use one of the following as a workaround:

  • State: USB connected
  • State: Power
  • State: BT Connected (if it's a BT dock)

Why aren't I getting any cell data for the Cell Near state ?

A user reports being able to fix this issue as follows:
I was able to fix this issue by going into the EPST menues using
##DATA# on the keypad and changing the EVDO Preferred mode from HDR to
Automatic.

It's possible that you will only be able to receive, not make, phone calls as another symptom of this problem.

Why isn't there a green light for the On/Off radio button on the main screen ?

A user discovered that this happens when the DPI value of the Android build is set to particulart values (e.g. 200,240 is OK, 220 the light disappears).

Why does the action Display Brightness cause my keyboard or application to close ?

Normally Android does not effect changes to brightness immediately, so Tasker has to use a trick to make it happen. That trick can sometimes have the side effect that e.g. some dialogs like the soft keyboard may close.

To avoid that, you can deselect the Immediate Effect checkbox in the Display Brightness action.

Why is the date in Tasker's notification list completely wrong ?

This occurs if you select a transparent Notification Icon at Menu / Prefs / Monitor, but don't specify a Custom Notification Layout.

Changing to a non-transparent icon or a custom layout will fix the problem.

Why won't Tasker install on my custom ROM ?

The most likely reason is that you don't have Google Maps installed on the device. With several custom ROMs that comes as a separate package.

Why doesn't my Perform Task action work when I Test it ?

When task (a) runs a Perform Task action to start task (b), the order in which the two tasks are executed depends on their relative priorities.

A feature of the Test button is that the tested task (a) runs at extremely high priority to ensure that the task runs even if other tasks are running in the background.

So testing Perform Task with the Test button will only work as expected if in actual usage task (a) will always have higher priority than task (b) or the Perform Task action has Stop specified.

Why doesn't my App Context work ?

Some apps (very few) aren't detected by Tasker, usually due to their internal structure.

Some custom Android ROMs also have special configurations which prevent Tasker's app detection working.

For the latter problem, there are a few things you can try:

  • look for special settings in your ROM that relate to 'keeping the launcher in memory'. They should be disabled.
  • change the build properties file. Look in /system/build.prop (or possibly /system/local.prop or /data/local.prop) for a line like:
    ro.HOME_APP_ADJ=-17

    Change it in a terminal program to look like this:

    ro.HOME_APP_ADJ=1

    If you didn't find an existing line, just add the new line as above.

    Note: you will first need to make /system writeable. You can do that e.g. with Tasker's Remount action. Remember to make it not-writeable again after making the change.

  • try detecting apps with a state using the %WIN (window title) variable; create a new state
    Variable Value, %WIN, Matches, TITLE
    where TITLE is the title of the window of the app you are interested in. For this solution to work, you also need to enable Tasker's Accessibility Service in Android Settings.

    You can check what %WIN shows for the app you are interested in with this profile:

    Event: Variable Set, %WIN
    Alert / Flash, Win is now %WIN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FAQ: Why... ?


Why am I an idiot if I use a pirated copy of Tasker ?

The hacker can do virtually anything with your phone. Record your calls and upload them to a website, SMS your location and all your contacts, make calls automatically, wipe your SD card, secretely record from your microphone any time etc etc

Why is GPS often scanning when I unlock my device ?

When the device wakes up, Tasker switches from a low-frequency GPS check schedule to a higher-frequency one. Android's GPS software always does an immediate scan when switching the check frequency.

It's not because Tasker is constantly scanning while the device is off

You can change the frequency in Menu / Prefs / Monitor.

Why does Tasker need so many permissions ?

Because it can do so much!

Unfortunately, Android requires that an app specify it's permissions even if they are never used, which means that permissions for all of the things which the user could potentially ask Tasker to do need to be specified.

If you are still concerned, consider that Tasker has over 25,000 downloads at the time of writing and any abuse taking place would quickly be discovered.

Why does Tasker need the INTERNET permission ?

The INTERNET permission is used solely for:
  • google maps downloading map data, only for setting up a Location context
  • to carry out HTTP Post/Get actions and other actions that require an Internet connection by their nature
  • to verify the order number, and only until it has been successfully verified
  • to check whether a new Tasker version is available, if configured in Preferences

Tasker never directly uses Internet access for anything else.

Why isn't Tasker shown in the Application Context list ?

Because it's easy to get into trouble firing tasks in Tasker. For example, if a profile is setup with a Tasker Application Context and a task with Load App Calculator, it will not be possible to enter Tasker anymore.

Why does Tasker have it's own music player and controls for the system music player ?

  • the system music player is not guaranteed to be present or the same on all systems.
  • finer control can be exercised over the Tasker player e.g. starting the track from a preset seek point
  • Tasker's player is more discrete, there is no notification bar icon.
  • by having two players available you can do things like alternating audio from different music sources or even playing simiultaneously.

Why does a Cell Near context not become inactive when I turn on Airplane Mode ?

Cell Near is sticky. That means that once active it stays active until a non-matching Cell ID is seen. In Airplane Mode no Cell IDs are seen and so the context stays active.

Many people use Airplane Mode at night e.g. to save battery. If you also have a Cell Near profile that detects when you are home, it would become inactive at night if Cell Near wasn't sticky.

A couple of points:
  • the Cell radio isn't being turned on by Tasker in Airplane Mode.
  • if you want a profile to become inactive for Airplane Mode, just add an Inverted state Airplane Mode to it.

Why can't I use a downloaded icon for my shortcut task / Notify action ?

Some things just weren't meant to be (i.e. Android doesn't allow it).

To solve the shortcut problem, you can always use a widget though.

For notifications:

Why does my profile have 2 enter tasks ? Why can't I add an exit task ?

That's because it's an
instant profile.

As a convenience, the Exit task with such profiles is replaced by an extra Enter task in case you have a lot to do with that profile.

Note that the tasks you specify execute in the order they are specified, their actions do not alternate.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FAQ: App Creation

Does app creation support profiles ?

Sure. You can export projects as apps and projects can contain profiles, tasks and scenes.

For help accessing projects, see Menu / Info / Help This Screen in the main screen.

Why is the app always shown as running ?

Tasker tries to detect when it's monitor service is no longer needed but that is not always possible. You can put a Disable action from the Tasker category at the end of your launch task to ensure that it happens.

The monitor will be started again automatically each time the app is lauched from the home screen.

How do I do initialization on the first launch ?

Setup your launch task something like this:

If %LaunchCount = 0
   ...initialization actions...
Else
   ...normal actions...
Elsif
Variable Add, %LaunchCount, 1

Why isn't my app detecting background events ?

One possible cause is: when an app has just been installed on Android it is in a 'frozen' state until there is some user interaction with it (usually clicking the home screen icon at least once).

How can I send the developer a short-term App Factory log ?

  • download aLogcat, free from Android Market
  • disable Tasker in the main screen bottom-left
  • in the App Config screen, check Advanced Properties and then Debug
  • create and install the new app *twice*
  • launch the new app from the home screen
  • reproduce whatever conditions cause the problem
  • go to aLogCat, click Menu / Pause then Menu / Send
  • the destination email is listed in Menu / Info / User Support in Tasker
  • include at the top a brief description of the problem that the email concerns

Try to make the log as soon as possible after the problem occurs.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FAQ: Other

Do you plan to include feature X ?

Please see the
Plans page.

Should I worry about using Tasker's Accessibility service ?

Not at all.

Although the Android warning says Tasker might read passwords, in fact:

  • Android doesn't allow apps to see the contents of fields labelled Password
  • Tasker doesn't even ask Android for data about text fields, only buttons, windows and notifications

What's an Instant Profile ?

Most profiles have a duration. Their enter task fires, they are active for a while, then they go inactive and settings may be restored or an exit task fired. However, profiles with

  • an Event context, or
  • a Time context where the From parameter is the same as the To parameter, or
  • a Time context with a repeat value specified

are only active for an instant and hence it does not make sense to talk about an exit task and restoration of settings.

There's no point setting brightness from 200 to 30, and then a millisecond later back to 200, therefore settings made by an instant profile stay at whatever value is specified.