Fixing improper paging of wallpaper providers in customization drawer.

Change-Id: I3f0323f2e97d4538ae9c35e17738bcbb46b5a2a7
diff --git a/src/com/android/launcher2/CustomizePagedView.java b/src/com/android/launcher2/CustomizePagedView.java
index 92140b1..6db6aa9 100644
--- a/src/com/android/launcher2/CustomizePagedView.java
+++ b/src/com/android/launcher2/CustomizePagedView.java
@@ -768,7 +768,10 @@
         LinearLayout layout = (LinearLayout) getChildAt(page);
         layout.removeAllViews();
         final int count = mWallpaperList.size();
-        for (int i = 0; i < count; ++i) {
+        final int numItemsPerPage = mMaxWidgetsCellHSpan / mWallpaperCellHSpan;
+        final int startIndex = page * numItemsPerPage;
+        final int endIndex = Math.min(count, startIndex + numItemsPerPage);
+        for (int i = startIndex; i < endIndex; ++i) {
             final ResolveInfo info = mWallpaperList.get(i);
 
             LinearLayout l = (LinearLayout) mInflater.inflate(