Java tutorial
//package com.java2s; //License from project: Open Source License import android.graphics.Canvas; import android.graphics.Color; import android.graphics.PorterDuff; import android.graphics.Rect; import android.view.SurfaceHolder; import android.view.SurfaceView; public class Main { public static synchronized void cleansurfaceview(SurfaceHolder postureholder, SurfaceView posturesurface) { Canvas canvas = postureholder .lockCanvas(new Rect(0, 0, posturesurface.getWidth(), posturesurface.getHeight())); canvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR); postureholder.unlockCanvasAndPost(canvas); Canvas canvasa = postureholder .lockCanvas(new Rect(0, 0, posturesurface.getWidth(), posturesurface.getHeight())); canvasa.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR); postureholder.unlockCanvasAndPost(canvasa); } }