Only add new category into CategoryFragment
am: b074689bcd

Change-Id: I19162a59257c68e07c3ca9e0112b482f846f6bc3
diff --git a/src/com/android/wallpaper/picker/CategoryFragment.java b/src/com/android/wallpaper/picker/CategoryFragment.java
index c0dd6a0..76f857b 100755
--- a/src/com/android/wallpaper/picker/CategoryFragment.java
+++ b/src/com/android/wallpaper/picker/CategoryFragment.java
@@ -222,6 +222,10 @@
             mAdapter.notifyItemInserted(getNumColumns());
             mAwaitingCategories = true;
         }
+        // Not add existing category to category list
+        if (mCategories.indexOf(category) >= 0) {
+            return;
+        }
 
         int priority = category.getPriority();