am 1f98c62f: Fix unnecessary layer creation for appear animation

* commit '1f98c62f9a60fedd8f18bd47e3f3c4e5fcb34031':
  Fix unnecessary layer creation for appear animation

2 files changed, 9 insertions, 7 deletions

diff --git a/packages/SystemUI/res/layout/status_bar_notification_keyguard_overflow.xml b/packages/SystemUI/res/layout/status_bar_notification_keyguard_overflow.xml
index 4526af53afaa..f699fce27043 100644
--- a/packages/SystemUI/res/layout/status_bar_notification_keyguard_overflow.xml
+++ b/packages/SystemUI/res/layout/status_bar_notification_keyguard_overflow.xml
@@ -31,7 +31,7 @@
         android:layout_height="match_parent"
         />
 
-    <LinearLayout
+    <com.android.keyguard.AlphaOptimizedLinearLayout
         android:id="@+id/content"
         android:layout_width="match_parent"
         android:layout_height="match_parent">
@@ -63,6 +63,6 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             />
-    </LinearLayout>
+    </com.android.keyguard.AlphaOptimizedLinearLayout>
 
 </com.android.systemui.statusbar.NotificationOverflowContainer>
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/ActivatableNotificationView.java b/packages/SystemUI/src/com/android/systemui/statusbar/ActivatableNotificationView.java
index 7cde44c44487..403af7099c6c 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/ActivatableNotificationView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/ActivatableNotificationView.java
@@ -656,12 +656,14 @@ public abstract class ActivatableNotificationView extends ExpandableOutlineView
     }
 
     private void setContentAlpha(float contentAlpha) {
-        int layerType = contentAlpha == 0.0f || contentAlpha == 1.0f ? LAYER_TYPE_NONE
-                : LAYER_TYPE_HARDWARE;
         View contentView = getContentView();
-        int currentLayerType = contentView.getLayerType();
-        if (currentLayerType != layerType) {
-            contentView.setLayerType(layerType, null);
+        if (contentView.hasOverlappingRendering()) {
+            int layerType = contentAlpha == 0.0f || contentAlpha == 1.0f ? LAYER_TYPE_NONE
+                    : LAYER_TYPE_HARDWARE;
+            int currentLayerType = contentView.getLayerType();
+            if (currentLayerType != layerType) {
+                contentView.setLayerType(layerType, null);
+            }
         }
         contentView.setAlpha(contentAlpha);
     }