Android transparent canvas (surfaceview)

Question

I\'ve got a panel which is placed on top of another view via a relativelayout.

I would like to give this panel a transparent background, but didn\'t find the correct

Answer 1

In the constructor:

setZOrderOnTop(true);

After holder.addCallback(this):

holder.setFormat(PixelFormat.TRANSPARENT);

At the beginning of drawing:

canvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR);