Speed up All Apps -> Workspace transition

- use HW layers on Views whose alpha is faded
- don't run animation end code until the entire launcher
transition is finished
- be more aggressive about making workspace pages visible
after an animation, potential fix for Bug #5867739

Change-Id: I52a088e551c1636a67725629640286b885070f32

1 files changed, 12 insertions, 0 deletions

diff --git a/src/com/android/launcher2/SearchDropTargetBar.java b/src/com/android/launcher2/SearchDropTargetBar.java
index 3a7f24b09..03ca38fb4 100644
--- a/src/com/android/launcher2/SearchDropTargetBar.java
+++ b/src/com/android/launcher2/SearchDropTargetBar.java
@@ -129,14 +129,26 @@ public class SearchDropTargetBar extends FrameLayout implements DragController.D
             @Override
             public void onAnimationStart(Animator animation) {
                 mQSBSearchBar.setVisibility(View.VISIBLE);
+                mQSBSearchBar.setLayerType(View.LAYER_TYPE_HARDWARE, null);
+            }
+
+            @Override
+            public void onAnimationEnd(Animator animation) {
+                mQSBSearchBar.setLayerType(View.LAYER_TYPE_NONE, null);
             }
         });
         mQSBSearchBarFadeOutAnim = ObjectAnimator.ofFloat(mQSBSearchBar, "alpha", 0f);
         mQSBSearchBarFadeOutAnim.setDuration(sTransitionOutDuration);
         mQSBSearchBarFadeOutAnim.addListener(new AnimatorListenerAdapter() {
             @Override
+            public void onAnimationStart(Animator animation) {
+                mQSBSearchBar.setLayerType(View.LAYER_TYPE_HARDWARE, null);
+            }
+
+            @Override
             public void onAnimationEnd(Animator animation) {
                 mQSBSearchBar.setVisibility(View.INVISIBLE);
+                mQSBSearchBar.setLayerType(View.LAYER_TYPE_NONE, null);
             }
         });
     }