Set a HW layer for Fragment alpha animation (de9284de) · Commits · e / os / android_frameworks_base

core/java/android/app/FragmentManager.java

+89 −0

Original line number	Original line	Diff line number	Diff line
	@@ -19,6 +19,9 @@ package android.app;
	import android.animation.Animator;		import android.animation.Animator;
	import android.animation.AnimatorInflater;		import android.animation.AnimatorInflater;
	import android.animation.AnimatorListenerAdapter;		import android.animation.AnimatorListenerAdapter;
			import android.animation.AnimatorSet;
			import android.animation.PropertyValuesHolder;
			import android.animation.ValueAnimator;
	import android.content.Context;		import android.content.Context;
	import android.content.res.Configuration;		import android.content.res.Configuration;
	import android.content.res.TypedArray;		import android.content.res.TypedArray;
	@@ -403,6 +406,44 @@ final class FragmentManagerImpl extends FragmentManager implements LayoutInflate
	static final String VIEW_STATE_TAG = "android:view_state";		static final String VIEW_STATE_TAG = "android:view_state";
	static final String USER_VISIBLE_HINT_TAG = "android:user_visible_hint";		static final String USER_VISIBLE_HINT_TAG = "android:user_visible_hint";

			static class AnimateOnHWLayerIfNeededListener implements Animator.AnimatorListener {
			private boolean mShouldRunOnHWLayer = false;
			private View mView;
			public AnimateOnHWLayerIfNeededListener(final View v) {
			if (v == null) {
			return;
			}
			mView = v;
			}

			@Override
			public void onAnimationStart(Animator animation) {
			mShouldRunOnHWLayer = shouldRunOnHWLayer(mView, animation);
			if (mShouldRunOnHWLayer) {
			mView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
			}
			}

			@Override
			public void onAnimationEnd(Animator animation) {
			if (mShouldRunOnHWLayer) {
			mView.setLayerType(View.LAYER_TYPE_NONE, null);
			}
			mView = null;
			animation.removeListener(this);
			}

			@Override
			public void onAnimationCancel(Animator animation) {

			}

			@Override
			public void onAnimationRepeat(Animator animation) {

			}
			}

	ArrayList<Runnable> mPendingActions;		ArrayList<Runnable> mPendingActions;
	Runnable[] mTmpActions;		Runnable[] mTmpActions;
	boolean mExecutingActions;		boolean mExecutingActions;
	@@ -467,6 +508,50 @@ final class FragmentManagerImpl extends FragmentManager implements LayoutInflate
	throw ex;		throw ex;
	}		}

			static boolean modifiesAlpha(Animator anim) {
			if (anim == null) {
			return false;
			}
			if (anim instanceof ValueAnimator) {
			ValueAnimator valueAnim = (ValueAnimator) anim;
			PropertyValuesHolder[] values = valueAnim.getValues();
			for (int i = 0; i < values.length; i++) {
			if (("alpha").equals(values[i].getPropertyName())) {
			return true;
			}
			}
			} else if (anim instanceof AnimatorSet) {
			List<Animator> animList = ((AnimatorSet) anim).getChildAnimations();
			for (int i = 0; i < animList.size(); i++) {
			if (modifiesAlpha(animList.get(i))) {
			return true;
			}
			}
			}
			return false;
			}

			static boolean shouldRunOnHWLayer(View v, Animator anim) {
			if (v == null \|\| anim == null) {
			return false;
			}
			return v.getLayerType() == View.LAYER_TYPE_NONE
			&& v.hasOverlappingRendering()
			&& modifiesAlpha(anim);
			}

			/**
			* Sets the to be animated view on hardware layer during the animation.
			*/
			private void setHWLayerAnimListenerIfAlpha(final View v, Animator anim) {
			if (v == null \|\| anim == null) {
			return;
			}
			if (shouldRunOnHWLayer(v, anim)) {
			anim.addListener(new AnimateOnHWLayerIfNeededListener(v));
			}
			}

	@Override		@Override
	public FragmentTransaction beginTransaction() {		public FragmentTransaction beginTransaction() {
	return new BackStackRecord(this);		return new BackStackRecord(this);
	@@ -894,6 +979,7 @@ final class FragmentManagerImpl extends FragmentManager implements LayoutInflate
	transitionStyle);		transitionStyle);
	if (anim != null) {		if (anim != null) {
	anim.setTarget(f.mView);		anim.setTarget(f.mView);
			setHWLayerAnimListenerIfAlpha(f.mView, anim);
	anim.start();		anim.start();
	}		}
	container.addView(f.mView);		container.addView(f.mView);
	@@ -975,6 +1061,7 @@ final class FragmentManagerImpl extends FragmentManager implements LayoutInflate
	}		}
	});		});
	anim.setTarget(f.mView);		anim.setTarget(f.mView);
			setHWLayerAnimListenerIfAlpha(f.mView, anim);
	anim.start();		anim.start();

	}		}
	@@ -1188,6 +1275,7 @@ final class FragmentManagerImpl extends FragmentManager implements LayoutInflate
	}		}
	}		}
	});		});
			setHWLayerAnimListenerIfAlpha(finalFragment.mView, anim);
	anim.start();		anim.start();
	} else {		} else {
	fragment.mView.setVisibility(View.GONE);		fragment.mView.setVisibility(View.GONE);
	@@ -1209,6 +1297,7 @@ final class FragmentManagerImpl extends FragmentManager implements LayoutInflate
	transitionStyle);		transitionStyle);
	if (anim != null) {		if (anim != null) {
	anim.setTarget(fragment.mView);		anim.setTarget(fragment.mView);
			setHWLayerAnimListenerIfAlpha(fragment.mView, anim);
	anim.start();		anim.start();
	}		}
	fragment.mView.setVisibility(View.VISIBLE);		fragment.mView.setVisibility(View.VISIBLE);