added in version 25.4.0
belongs to Maven artifact com.android.support:leanback-v17:28.0.0-alpha1

Summary: Ctors | Methods | Inherited Methods | [Expand All]

DetailsSupportFragmentBackgroundController

public class DetailsSupportFragmentBackgroundController
extends Object

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

Controller for DetailsSupportFragment parallax background and embedded video play.

The parallax background drawable is made of two parts: cover drawable (by default FitWidthBitmapDrawable) above the details overview row and bottom drawable (by default ColorDrawable) below the details overview row. While vertically scrolling rows, the size of cover drawable and bottom drawable will be updated and the cover drawable will by default perform a parallax shift using PROPERTY_VERTICAL_OFFSET.

        ***************************
        *      Cover Drawable     *
        * (FitWidthBitmapDrawable)*
        *                         *
        ***************************
        *    DetailsOverviewRow   *
        *                         *
        ***************************
        *     Bottom Drawable     *
        *      (ColorDrawable)    *
        *         Related         *
        *         Content         *
        ***************************

Both parallax background drawable and embedded video play are optional. App must call enableParallax() and/or setupVideoPlayback(PlaybackGlue) explicitly. The PlaybackGlue is automatically play() when fragment starts and pause() when fragment stops. When video is ready to play, cover drawable will be faded out. Example:

 DetailsSupportFragmentBackgroundController mController = new DetailsSupportFragmentBackgroundController(this);

 public void onCreate(Bundle savedInstance) {
     super.onCreate(savedInstance);
     MediaPlayerGlue player = new MediaPlayerGlue(..);
     player.setUrl(...);
     mController.enableParallax();
     mController.setupVideoPlayback(player);
 }

 static class MyLoadBitmapTask extends ... {
     WeakReference mFragmentRef;
     MyLoadBitmapTask(MyFragment fragment) {
         mFragmentRef = new WeakReference(fragment);
     }
     protected void onPostExecute(Bitmap bitmap) {
         MyFragment fragment = mFragmentRef.get();
         if (fragment != null) {
             fragment.mController.setCoverBitmap(bitmap);
         }
     }
 }

 public void onStart() {
     new MyLoadBitmapTask(this).execute(url);
 }

 public void onStop() {
     mController.setCoverBitmap(null);
 }

To customize cover drawable and/or bottom drawable, app should call enableParallax(Drawable, Drawable, ParallaxTarget.PropertyValuesHolderTarget). If app supplies a custom cover Drawable, it should not call setCoverBitmap(Bitmap). If app supplies a custom bottom Drawable, it should not call setSolidColor(int).

To customize playback fragment, app should override onCreateVideoSupportFragment() and onCreateGlueHost().

Summary

Public constructors
`DetailsSupportFragmentBackgroundController(DetailsSupportFragment fragment)` Creates a DetailsSupportFragmentBackgroundController for a DetailsSupportFragment.

Public methods
`boolean`	`canNavigateToVideoSupportFragment()` Precondition allows user navigate to video fragment using DPAD.
`void`	`enableParallax(Drawable coverDrawable, Drawable bottomDrawable, ParallaxTarget.PropertyValuesHolderTarget coverDrawableParallaxTarget)` Enables parallax background using a custom cover drawable at top and a custom bottom drawable.
`void`	`enableParallax()` Enables default parallax background using a `FitWidthBitmapDrawable` as cover drawable and `ColorDrawable` as bottom drawable.
`final Fragment`	`findOrCreateVideoSupportFragment()` Adds or gets fragment for rendering video in DetailsSupportFragment.
`final Drawable`	`getBottomDrawable()` Returns the drawable at bottom.
`final Bitmap`	`getCoverBitmap()` Returns Bitmap set by `setCoverBitmap(Bitmap)`.
`final Drawable`	`getCoverDrawable()` Returns the cover drawable at top.
`final int`	`getParallaxDrawableMaxOffset()` Returns Default parallax offset in pixels for bitmap moving vertically.
`final PlaybackGlue`	`getPlaybackGlue()` Returns current PlaybackGlue or null if not set or cleared.
`final int`	`getSolidColor()` Returns color set by `setSolidColor(int)`.
`PlaybackGlueHost`	`onCreateGlueHost()` Creates a PlaybackGlueHost to host PlaybackGlue.
`Fragment`	`onCreateVideoSupportFragment()` Creates a Fragment to host `PlaybackGlue`.
`final void`	`setCoverBitmap(Bitmap bitmap)` Convenient method to set Bitmap in cover drawable.
`final void`	`setParallaxDrawableMaxOffset(int offset)` Sets default parallax offset in pixels for bitmap moving vertically.
`final void`	`setSolidColor(int color)` Convenient method to set color in bottom drawable.
`void`	`setupVideoPlayback(PlaybackGlue playbackGlue)` Enable video playback and set proper `PlaybackGlueHost`.
`final void`	`switchToRows()` Switch to rows fragment.
`final void`	`switchToVideo()` Switch to video fragment, note that this method is not affected by result of `canNavigateToVideoSupportFragment()`.

Inherited methods

From class


  
    java.lang.Object

Parameters
`coverDrawable`	`Drawable`: Custom cover drawable shown at top. `setCoverBitmap(Bitmap)` will not work if coverDrawable is not `FitWidthBitmapDrawable`; in that case it's app's responsibility to set content into coverDrawable.
`bottomDrawable`	`Drawable`: Drawable shown at bottom. `setSolidColor(int)` will not work if bottomDrawable is not `ColorDrawable`; in that case it's app's responsibility to set content of bottomDrawable.
`coverDrawableParallaxTarget`	`ParallaxTarget.PropertyValuesHolderTarget`: Target to perform parallax effect within coverDrawable. Use null for no parallax movement effect. Example to move bitmap within FitWidthBitmapDrawable: new ParallaxTarget.PropertyValuesHolderTarget( coverDrawable, PropertyValuesHolder.ofInt( FitWidthBitmapDrawable.PROPERTY_VERTICAL_OFFSET, 0, -120))

DetailsSupportFragmentBackgroundController

Summary

Public constructors

Public methods

Inherited methods

Public constructors

DetailsSupportFragmentBackgroundController

Public methods

canNavigateToVideoSupportFragment

enableParallax

enableParallax

findOrCreateVideoSupportFragment

getBottomDrawable

getCoverBitmap

getCoverDrawable

getParallaxDrawableMaxOffset

getPlaybackGlue

getSolidColor

onCreateGlueHost

onCreateVideoSupportFragment

setCoverBitmap

setParallaxDrawableMaxOffset

setSolidColor

setupVideoPlayback

switchToRows

switchToVideo

Interfaces

Classes