Android Question Panel with cut out window

No need to be a panel, create a PNG with a "transparent" window.

Good idea, but, unfortunately, I need to manage the size of the overall object (has to be size of screen) and the size of transparent window.

Any other suggestions, please?

In the meantime I implement dirty solution, that works for rectangle window. It is composed from four separate panels:




More challenging will it be with rounded window

Create a mutable bitmap with your needed dimensions.
Use paint functions to draw a rect in the bitmap with your favorite color.
Draw another smaller rect (or circle ) with full transparency.
Now create a BitmapDrawable, initialize it with your bitmap and assign it to the panel background.
The ABExtDrawing lib can help you with the paint functions.