End button fade animation when its visiblity changes

Back button reappeared after dismissing ime because fade animation
ended making the back button visible even though disabled flags
tried to make button invisible.

Fixes: 130442512
Test: manual
Change-Id: I478723d79d9612e2e1177784c75e7f755070aa9f

parent 970d0be2

packages/SystemUI/src/com/android/systemui/statusbar/phone/ButtonDispatcher.java

+5 −0

Original line number	Diff line number	Diff line
		@@ -141,6 +141,11 @@ public class ButtonDispatcher {

		public void setVisibility(int visibility) {
		if (mVisibility == visibility) return;
		if (mFadeAnimator != null) {
		mFadeAnimator.cancel();
		mFadeAnimator = null;
		}

		mVisibility = visibility;
		final int N = mViews.size();
		for (int i = 0; i < N; i++) {