【Android 】設定 SurfaceView 的背景及透明度

        SurfaceView surfViewDraw = (SurfaceView) findViewById(R.id.surfVDraw);

        surfViewDraw.setZOrderOnTop(true);
        surfViewDraw.getHolder().setFormat(PixelFormat.TRANSLUCENT);

//        surfViewDraw.setBackgroundResource(R.drawable.step_bg);
        surfViewDraw.setBackgroundColor(0Xffffffff);

        surHolder = surfViewDraw.getHolder();