Drag-Drop Android Launcher / GridView Issue - Android / Java - java

I have a gridView I've created from an online example/tutorial and I'm trying to figure out how to change the behavior when a new item is dragged over a previously existing item in the GridView. Currently when a new item is dragged over the gridView it removes the current icon in place (leaving it with the red empty square [icon.png is a grid of empty squares the code uses as a background image])
I've poured through the example's source quite a few times and I can't figure out how to change the behavior of what happens when one item is dragged over the other
Screenshot:
Source code:
https://drive.google.com/file/d/0B6jCh_IJdtoFYWFJMlk5MHhlX3c/edit?usp=sharing
P.S.
I believe the issue may be in either the DragView or DropTarget class. (feel free to download the entire project - I've made the entire thing available for an easy download)

Look at methods onDragEnter and onDragExit in ImageCell. Those two methods are the ones called as your finger passes over a cell on the grid. They set the background of the image view.
onDragEnter:
int bg = mEmpty ? R.color.cell_empty_hover : R.color.cell_filled_hover;
setBackgroundResource (bg);
onDragExit:
int bg = mEmpty ? R.color.cell_empty : R.color.cell_filled;
setBackgroundResource (bg);
The color definitions are in mycolor.xml.
Reference: http://blahti.wordpress.com/2012/03/03/improved-drag-drop-for-gridview/

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Somehow misinterpreted the question. The best way to achieve this would be to create the images and set as background to an imageview instead of a textview.
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heres a screen shot, the back space button is the ImageButton...
edit: heres the code....
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....
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(Although it still shouldn't, unless you use different assets.)
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