Speeding up AllApps click feedback

Change-Id: Ia16845b16d369bea610bb908d9a9f4805d4a1d54
diff --git a/src/com/android/launcher2/PagedViewIcon.java b/src/com/android/launcher2/PagedViewIcon.java
index 63f91b7..b0288dc 100644
--- a/src/com/android/launcher2/PagedViewIcon.java
+++ b/src/com/android/launcher2/PagedViewIcon.java
@@ -54,4 +54,17 @@
         setText(info.title);
         setTag(info);
     }
+
+    protected void drawableStateChanged() {
+        if (isPressed()) {
+            if (getAlpha() != 0.5f) {
+                setAlpha(0.5f);
+            }
+        } else {
+            if (getAlpha() != 1f) {
+                setAlpha(1f);
+            }
+        }
+        super.drawableStateChanged();
+    }
 }