added in version 22.1.0
belongs to Maven artifact com.android.support:leanback-v17:28.0.0-alpha1

Summary: Methods | Inherited Methods | [Expand All]

BackgroundManager

public final class BackgroundManager
extends Object

java.lang.Object
↳	android.support.v17.leanback.app.BackgroundManager

Supports background image continuity between multiple Activities.

An Activity should instantiate a BackgroundManager and attach(Window) to the Activity's window. When the Activity is started, the background is initialized to the current background values stored in a continuity service. The background continuity service is updated as the background is updated.

At some point, for example when it is stopped, the Activity may release its background state.

When an Activity is resumed, if the BackgroundManager has not been released, the continuity service is updated from the BackgroundManager state. If the BackgroundManager was released, the BackgroundManager inherits the current state from the continuity service.

When the last Activity is destroyed, the background state is reset.

Backgrounds consist of several layers, from back to front:

the background Drawable of the theme
a solid color (set via setColor(int))
two Drawables, previous and current (set via setBitmap(Bitmap) or setDrawable(Drawable)), which may be in transition

BackgroundManager holds references to potentially large bitmap Drawables. Call release() to release these references when the Activity is not visible.

Summary

Public methods
`void`	`attach(Window window)` Makes the background visible on the given Window.
`void`	`attachToView(View sceneRoot)` Adds the composite drawable to the given view.
`void`	`clearDrawable()` Clears the Drawable set by `setDrawable(Drawable)` or `setBitmap(Bitmap)`.
`int`	`getColor()` Returns the current background color.
`Drawable`	`getDefaultDimLayer()` This method was deprecated in API level 25.1.0. No longer support dim layer.
`Drawable`	`getDimLayer()` This method was deprecated in API level 25.1.0. No longer support dim layer.
`Drawable`	`getDrawable()` Returns the current background `Drawable`.
`static BackgroundManager`	`getInstance(Activity activity)` Returns the BackgroundManager associated with the given Activity.
`boolean`	`isAttached()` Returns true if the background manager is currently attached; false otherwise.
`boolean`	`isAutoReleaseOnStop()`
`void`	`release()` Release references to Drawable/Bitmap.
`void`	`setAutoReleaseOnStop(boolean autoReleaseOnStop)` Enable or disable call release() in Activity onStop().
`void`	`setBitmap(Bitmap bitmap)` Sets the given bitmap into the background.
`void`	`setColor(int color)` Sets the background to the given color.
`void`	`setDimLayer(Drawable drawable)` This method was deprecated in API level 25.1.0. No longer support dim layer.
`void`	`setDrawable(Drawable drawable)` Sets the given

BackgroundManager

Summary

Public methods