public static void beginDelayedTransition(ViewGroup sceneRoot, Transition transition) {
if (!sPendingTransitions.contains(sceneRoot) && sceneRoot.isLaidOut()) {
sPendingTransitions.add(sceneRoot);
if (transition == null) {
transition = sDefaultTransition;
}
Transition transitionClone = transition.clone();
sceneChangeSetup(sceneRoot, transitionClone);
Scene.setCurrentScene(sceneRoot, null);
sceneChangeRunTransition(sceneRoot, transitionClone);
}
}
private static void changeScene(Scene scene, Transition transition) {
ViewGroup sceneRoot = scene.getSceneRoot();
Transition transitionClone = null;
if (transition != null) {
transitionClone = transition.clone();
transitionClone.setSceneRoot(sceneRoot);
}
Scene oldScene = Scene.getCurrentScene(sceneRoot);
if (!(oldScene == null || transitionClone == null || !oldScene.isCreatedFromLayoutResource())) {
transitionClone.setCanRemoveViews(true);
}
sceneChangeSetup(sceneRoot, transitionClone);
scene.enter();
sceneChangeRunTransition(sceneRoot, transitionClone);
}
/**
* Convenience method to animate to a new scene defined by all changes within the given scene root
* between calling this method and the next rendering frame. Calling this method causes
* TransitionManager to capture current values in the scene root and then post a request to run a
* transition on the next frame. At that time, the new values in the scene root will be captured
* and changes will be animated. There is no need to create a Scene; it is implied by changes
* which take place between calling this method and the next frame when the transition begins.
*
* <p>Calling this method several times before the next frame (for example, if unrelated code also
* wants to make dynamic changes and run a transition on the same scene root), only the first call
* will trigger capturing values and exiting the current scene. Subsequent calls to the method
* with the same scene root during the same frame will be ignored.
*
* <p>Passing in <code>null</code> for the transition parameter will cause the TransitionManager
* to use its default transition.
*
* @param sceneRoot The root of the View hierarchy to run the transition on.
* @param transition The transition to use for this change. A value of null causes the
* TransitionManager to use the default transition.
*/
public static void beginDelayedTransition(final ViewGroup sceneRoot, Transition transition) {
if (!sPendingTransitions.contains(sceneRoot) && sceneRoot.isLaidOut()) {
if (Transition.DBG) {
Log.d(
LOG_TAG, "beginDelayedTransition: root, transition = " + sceneRoot + ", " + transition);
}
sPendingTransitions.add(sceneRoot);
if (transition == null) {
transition = sDefaultTransition;
}
final Transition transitionClone = transition.clone();
sceneChangeSetup(sceneRoot, transitionClone);
Scene.setCurrentScene(sceneRoot, null);
sceneChangeRunTransition(sceneRoot, transitionClone);
}
}
