Prevent flicker when starting a drag.

Also, animate item the view to its new position when dragging.

src/com/android/launcher2/Workspace.java

@@ -1360,7 +1360,6 @@ public class Workspace extends SmoothPagedView
         CellLayout current = getCurrentDropLayout();
 
         current.onDragChild(child);
-        child.setVisibility(View.GONE);
 
         child.clearFocus();
         child.setPressed(false);
@@ -1406,8 +1405,8 @@ public class Workspace extends SmoothPagedView
         // Based on the position of the drag view, find the top left of the original view
         int viewX = dragViewX + (dragView.getWidth() - child.getWidth()) / 2;
         int viewY = dragViewY + (dragView.getHeight() - child.getHeight()) / 2;
-        viewX -= getResources().getInteger(R.integer.config_dragViewOffsetX);
-        viewY -= getResources().getInteger(R.integer.config_dragViewOffsetY);
+        viewX += getResources().getInteger(R.integer.config_dragViewOffsetX);
+        viewY += getResources().getInteger(R.integer.config_dragViewOffsetY);
 
         // Set its old pos (in the new parent's coordinates); it will be animated
         // in animateViewIntoPosition after the next layout pass
@@ -2176,6 +2175,11 @@ public class Workspace extends SmoothPagedView
         mDragInfo = null;
     }
 
+    @Override
+    public void onDragViewVisible() {
+        ((View) mDragInfo.cell).setVisibility(View.GONE);
+    }
+
     public boolean isDropEnabled() {
         return true;
     }