start Created Bitmap one: 10x10 (100) Created Bitmap two: 20x20 (101) Created Bitmap three/four: 20x20 (101) Drawing Bitmap two: 20x20 (101) nulling 1 freeNativeStorage: 100 nulling 2 nulling 3 nulling 4 freeNativeStorage: 101 intr Bitmap has shut down done