Added in API level 24

Summary: Nested Classes | Methods | Inherited Methods

AccessibilityService.MagnificationController

Kotlin |Java

public static final class AccessibilityService.MagnificationController
extends Object

java.lang.Object
↳	android.accessibilityservice.AccessibilityService.MagnificationController

Used to control and query the state of display magnification.

Summary

Nested classes
`interface`	`AccessibilityService.MagnificationController.OnMagnificationChangedListener` Listener for changes in the state of magnification.

Public methods
`void`	`addListener(AccessibilityService.MagnificationController.OnMagnificationChangedListener listener, Handler handler)` Adds the specified change listener to the list of magnification change listeners.
`void`	`addListener(AccessibilityService.MagnificationController.OnMagnificationChangedListener listener)` Adds the specified change listener to the list of magnification change listeners.
`float`	`getCenterX()` This method was deprecated in API level 33. Use `getMagnificationConfig()` instead
`float`	`getCenterY()` This method was deprecated in API level 33. Use `getMagnificationConfig()` instead
`Region`	`getCurrentMagnificationRegion()` Returns the region of the screen currently active for magnification if the controlling magnification is `MagnificationConfig.MAGNIFICATION_MODE_FULLSCREEN`.
`MagnificationConfig`	`getMagnificationConfig()` Gets the `MagnificationConfig` of the controlling magnifier on the display.
`Region`	`getMagnificationRegion()` This method was deprecated in API level 33. Use `getCurrentMagnificationRegion()` instead
`float`	`getScale()` This method was deprecated in API level 33. Use `getMagnificationConfig()` instead
`boolean`	`removeListener(AccessibilityService.MagnificationController.OnMagnificationChangedListener listener)` Removes the specified change listener from the list of magnification change listeners.
`boolean`	`reset(boolean animate)` Resets magnification scale and center to their default (e.g. no magnification) values.
`boolean`	`resetCurrentMagnification(boolean animate)` Resets magnification scale and center of the controlling magnification to their default (e.g. no magnification) values.
`boolean`	`setCenter(float centerX, float centerY, boolean animate)` This method was deprecated in API level 33. Use `setMagnificationConfig(android.accessibilityservice.MagnificationConfig, boolean)` instead
`boolean`	`setMagnificationConfig(MagnificationConfig config, boolean animate)` Sets the `MagnificationConfig`.
`boolean`	`setScale(float scale, boolean animate)` This method was deprecated in API level 33. Use `setMagnificationConfig(android.accessibilityservice.MagnificationConfig, boolean)` instead

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

Public methods

addListener

Added in API level 24

public void addListener (AccessibilityService.MagnificationController.OnMagnificationChangedListener listener, 
                Handler handler)

Adds the specified change listener to the list of magnification change listeners. The callback will occur on the specified Handler's thread, or on the service's main thread if the handler is null.

Parameters
`listener`	`AccessibilityService.MagnificationController.OnMagnificationChangedListener`: the listener to add, must be non-null
`handler`	`Handler`: the handler on which the callback should execute, or `null` to execute on the service's main thread

addListener

Added in API level 24

public void addListener (AccessibilityService.MagnificationController.OnMagnificationChangedListener listener)

Adds the specified change listener to the list of magnification change listeners. The callback will occur on the service's main thread.

Parameters
`listener`	`AccessibilityService.MagnificationController.OnMagnificationChangedListener`: the listener to add, must be non-`null`

getCenterX

Added in API level 24
Deprecated in API level 33

public float getCenterX ()

This method was deprecated in API level 33.
Use getMagnificationConfig() instead

Returns the unscaled screen-relative X coordinate of the focal center of the magnified region. This is the point around which zooming occurs and is guaranteed to lie within the magnified region.

Note: If the service is not yet connected (e.g. AccessibilityService.onServiceConnected() has not yet been called) or the service has been disconnected, this method will return a default value of 0.0f.

Note: This legacy API gets the center position of full-screen magnification. To get the magnification center of the current controlling magnifier, use getMagnificationConfig() instead.

Returns
`float`	the unscaled screen-relative X coordinate of the center of the magnified region

getCenterY

Added in API level 24
Deprecated in API level 33

public float getCenterY ()

This method was deprecated in API level 33.
Use getMagnificationConfig() instead

Returns the unscaled screen-relative Y coordinate of the focal center of the magnified region. This is the point around which zooming occurs and is guaranteed to lie within the magnified region.

Note: This legacy API gets the center position of full-screen magnification. To get the magnification center of the current controlling magnifier, use getMagnificationConfig() instead.

Returns
`float`	the unscaled screen-relative Y coordinate of the center of the magnified region

getCurrentMagnificationRegion

Added in API level 33

public Region getCurrentMagnificationRegion ()

Returns the region of the screen currently active for magnification if the controlling magnification is MagnificationConfig.MAGNIFICATION_MODE_FULLSCREEN. Returns the region of screen projected on the magnification window if the controlling magnification is MagnificationConfig.MAGNIFICATION_MODE_WINDOW.

If the controlling mode is MagnificationConfig.MAGNIFICATION_MODE_FULLSCREEN, the returned region will be empty if the magnification is not active. And the magnification is active if magnification gestures are enabled or if a service is running that can control magnification.

If the controlling mode is MagnificationConfig.MAGNIFICATION_MODE_WINDOW, the returned region will be empty if the magnification is not activated.

Note: If the service is not yet connected (e.g. AccessibilityService.onServiceConnected() has not yet been called) or the service has been disconnected, this method will return an empty region.

Returns
`Region`	the magnification region of the currently controlling magnification This value cannot be `null`.

getMagnificationConfig

Added in API level 33

public MagnificationConfig getMagnificationConfig ()

Gets the MagnificationConfig of the controlling magnifier on the display.

Note: If the service is not yet connected (e.g. AccessibilityService.onServiceConnected() has not yet been called) or the service has been disconnected, this method will return null.

Returns
`MagnificationConfig`	the magnification config that the service controls

getMagnificationRegion

Added in API level 24
Deprecated in API level 33

public Region getMagnificationRegion ()

This method was deprecated in API level 33.
Use getCurrentMagnificationRegion() instead

Returns the region of the screen currently active for magnification. Changes to magnification scale and center only affect this portion of the screen. The rest of the screen, for example input methods, cannot be magnified. This region is relative to the unscaled screen and is independent of the scale and center point.

The returned region will be empty if magnification is not active. Magnification is active if magnification gestures are enabled or if a service is running that can control magnification.

Note: If the service is not yet connected (e.g. AccessibilityService.onServiceConnected() has not yet been called) or the service has been disconnected, this method will return an empty region.

Note: This legacy API gets the magnification region of full-screen magnification. To get the magnification region of the current controlling magnifier, use getCurrentMagnificationRegion() instead.

Returns
`Region`	the region of the screen currently active for magnification, or an empty region if magnification is not active. This value cannot be `null`.

getScale

Added in API level 24
Deprecated in API level 33

public float getScale ()

This method was deprecated in API level 33.
Use getMagnificationConfig() instead

Returns the current magnification scale.

Note: This legacy API gets the scale of full-screen magnification. To get the scale of the current controlling magnifier, use getMagnificationConfig() instead.

Returns
`float`	the current magnification scale

removeListener

Added in API level 24

public boolean removeListener (AccessibilityService.MagnificationController.OnMagnificationChangedListener listener)

Removes the specified change listener from the list of magnification change listeners.

Parameters
`listener`	`AccessibilityService.MagnificationController.OnMagnificationChangedListener`: the listener to remove, must be non-null

Returns
`boolean`	`true` if the listener was removed, `false` otherwise

reset

Added in API level 24

public boolean reset (boolean animate)

Resets magnification scale and center to their default (e.g. no magnification) values.

Note: This legacy API reset full-screen magnification. To reset the current controlling magnifier, use resetCurrentMagnification(boolean) ()} instead.

Parameters
`animate`	`boolean`: `true` to animate from the current scale and center or `false` to reset the scale and center immediately

Returns
`boolean`	`true` on success, `false` on failure

resetCurrentMagnification

Added in API level 33

public boolean resetCurrentMagnification (boolean animate)

Resets magnification scale and center of the controlling magnification to their default (e.g. no magnification) values.

Parameters
`animate`	`boolean`: `true` to animate from the current scale and center or `false` to reset the scale and center immediately

Returns
`boolean`	`true` on success, `false` on failure

setCenter

Added in API level 24
Deprecated in API level 33

public boolean setCenter (float centerX, 
                float centerY, 
                boolean animate)

This method was deprecated in API level 33.
Use setMagnificationConfig(android.accessibilityservice.MagnificationConfig, boolean) instead

Sets the center of the magnified viewport.

Note: This legacy API sets the center of full-screen magnification. To set the center of the specified magnifier, use setMagnificationConfig(MagnificationConfig, boolean) instead.

Parameters
`centerX`	`float`: the unscaled screen-relative X coordinate on which to center the viewport
`centerY`	`float`: the unscaled screen-relative Y coordinate on which to center the viewport
`animate`	`boolean`: `true` to animate from the current viewport center or `false` to set the center immediately

Returns
`boolean`	`true` on success, `false` on failure

setMagnificationConfig

Added in API level 33

public boolean setMagnificationConfig (MagnificationConfig config, 
                boolean animate)

Sets the MagnificationConfig. The service controls the magnification by setting the config.

Parameters
`config`	`MagnificationConfig`: the magnification config This value cannot be `null`.
`animate`	`boolean`: `true` to animate from the current spec or `false` to set the spec immediately

Returns
`boolean`	`true` on success, `false` on failure

setScale

Added in API level 24
Deprecated in API level 33

public boolean setScale (float scale, 
                boolean animate)

This method was deprecated in API level 33.
Use setMagnificationConfig(android.accessibilityservice.MagnificationConfig, boolean) instead

Sets the magnification scale.

Note: This legacy API sets the scale of full-screen magnification. To set the scale of the specified magnifier, use setMagnificationConfig(MagnificationConfig, boolean) instead.

Parameters
`scale`	`float`: the magnification scale to set, must be >= 1 and <= 8
`animate`	`boolean`: `true` to animate from the current scale or `false` to set the scale immediately

Returns
`boolean`	`true` on success, `false` on failure

AccessibilityService.MagnificationController

Summary

Nested classes

Public methods

Inherited methods

Public methods

addListener

addListener

getCenterX

getCenterY

getCurrentMagnificationRegion

getMagnificationConfig

getMagnificationRegion

getScale

removeListener

reset

resetCurrentMagnification

setCenter

setMagnificationConfig

setScale