请教关于surfaceview背景初始化

============问题描述============

Canvas canvas = sfh.lockCanvas(null);  

        canvas.drawColor(Color.BLUE);// 清除画布  

        sfh.unlockCanvasAndPost(canvas);  

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        sfv = (SurfaceView) this.findViewById(R.id.SurfaceView01);  

        sfh = sfv.getHolder();  



//       此时还得不到画布的，canvas是null

        Canvas canvas = sfh.lockCanvas(null);

        canvas.drawColor(Color.BLUE); 

        sfh.unlockCanvasAndPost(canvas); 	

        	 

    }

============解决方案1============

请教关于surfaceview背景初始化

原文：http://www.cnblogs.com/liangxieliang56/p/4083153.html