/**
* Utility function, called by animateProperty() and animatePropertyBy(), which handles the
* details of adding a pending animation and posting the request to start the animation.
*
* @param constantName The specifier for the property being animated
* @param startValue The starting value of the property
* @param byValue The amount by which the property will change
*/
private void animatePropertyBy(int constantName, float startValue, float byValue) {
// First, cancel any existing animations on this property
if (mAnimatorMap.size() > 0) {
Animator animatorToCancel = null;
Set<Animator> animatorSet = mAnimatorMap.keySet();
for (Animator runningAnim : animatorSet) {
PropertyBundle bundle = mAnimatorMap.get(runningAnim);
if (bundle.cancel(constantName)) {
// property was canceled - cancel the animation if it's now empty
// Note that it's safe to break out here because every new animation
// on a property will cancel a previous animation on that property, so
// there can only ever be one such animation running.
if (bundle.mPropertyMask == NONE) {
// the animation is no longer changing anything - cancel it
animatorToCancel = runningAnim;
break;
}
}
}
if (animatorToCancel != null) {
animatorToCancel.cancel();
}
}
NameValuesHolder nameValuePair = new NameValuesHolder(constantName, startValue, byValue);
mPendingAnimations.add(nameValuePair);
mView.removeCallbacks(mAnimationStarter);
mView.postOnAnimation(mAnimationStarter);
}
private void postOnAnimation(View view, Runnable runnable) {
if (Build.VERSION.SDK_INT >= 16) {
view.postOnAnimation(runnable);
} else {
view.postDelayed(runnable, 16L);
}
}
private void postOnAnimation(View view, Runnable runnable) {
if (VERSION.SDK_INT >= VERSION_CODES.JELLY_BEAN) {
view.postOnAnimation(runnable);
} else {
view.postDelayed(runnable, 16);
}
}
public static void postOnAnimation(View view, Runnable r) {
view.postOnAnimation(r);
}
public static void postOnAnimation(View view, Runnable action) {
view.postOnAnimation(action);
}
public final void a(View paramView, Runnable paramRunnable) {
paramView.postOnAnimation(paramRunnable);
}
@TargetApi(16)
private static void postOnAnimationJellyBean(View view, Runnable runnable) {
view.postOnAnimation(runnable);
}