Fixing focus issues in Launcher (keyboard support).

Change-Id: Ieafd713393daf5628f229a66441bd3ed293245da

src/com/android/launcher2/Utilities.java

@@ -16,6 +16,8 @@
 
 package com.android.launcher2;
 
+import java.util.Random;
+
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Bitmap;
@@ -389,4 +391,8 @@ final class Utilities {
         }
         return n;
     }
+
+    static int generateRandomId() {
+        return new Random(System.currentTimeMillis()).nextInt(1 << 24);
+    }
 }