Android SurfaceHolder.unlockCanvasAndPost() does not cause redraw

Question

I\'m implementing a fairly standard app with the Android sdk that involves drawing using the SurfaceView, SurfaceHolder, Callback setup.

In my main thread (UI thread) I

Answer 1

That's not how SurfaceView works. Calling unlockCanvasAndPost() does not invoke onDraw(), that's the whole point of using a SurfaceView. A SurfaceView's surface lives in a different window.