Android Button's background as shape with Shadow

Question

I\'ve made a button background from shapes and is looking quite good for my purpose. The only thing needed is to drop a bit of shadow for it. Here is the code:

Answer 1

Paint mShadow = new Paint(); 
// radius=10, y-offset=2, color=black 
mShadow.setShadowLayer(10.0f, 0.0f, 2.0f, 0xFF000000); 
// in onDraw(Canvas) 
canvas.drawBitmap(bitmap, 0.0f, 0.0f, mShadow);

This code is from Android's Romain Guy available here : http://www.devoxx.com/download/attachments/1705921/D8_C_10_09_04.pdf