From d7d4af051c5a7ba57bc634c09248214527b732dc Mon Sep 17 00:00:00 2001
From: Hawkwood Glazier <jglazier@google.com>
Date: Tue, 14 Jun 2022 19:38:58 +0000
Subject: [PATCH] Media transition must crossfade when transitioning to
 transparent

When transitioning to a transparent or semi-transparent drawable,
TransitionDrawable.setCrossFade must be enabled so that the previous
album art transitions away as expected.

Bug: 235677371
Test: Manual
Change-Id: I4fac5f866354b7f05161b32621a030589b123958
---
 .../src/com/android/systemui/media/MediaControlPanel.java        | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/SystemUI/src/com/android/systemui/media/MediaControlPanel.java b/packages/SystemUI/src/com/android/systemui/media/MediaControlPanel.java
index dea13251e100d..33453a4c31d64 100644
--- a/packages/SystemUI/src/com/android/systemui/media/MediaControlPanel.java
+++ b/packages/SystemUI/src/com/android/systemui/media/MediaControlPanel.java
@@ -677,6 +677,7 @@ public class MediaControlPanel {
                         scaleTransitionDrawableLayer(transitionDrawable, 1, width, height);
                         transitionDrawable.setLayerGravity(0, Gravity.CENTER);
                         transitionDrawable.setLayerGravity(1, Gravity.CENTER);
+                        transitionDrawable.setCrossFadeEnabled(!isArtworkBound);
 
                         albumView.setImageDrawable(transitionDrawable);
                         transitionDrawable.startTransition(isArtworkBound ? 333 : 80);