Android Trying to make scratch away game
<p>I'm trying to make a game that will have a black screen, when you swipe the screen, the black portion you touch will disappear and show a image behind it.  The object is to keeping swiping until you can guess what the image is.</p>

<p>I have seen other apps that do this.  I'm stuck on how to do it.  My idear was to modify a bitmap by changing the pixcels to see through.  But I don't see any way of getting access to the bitmaps memory, or maybe there is another way to do this????</p>
