SurfaceView做动画的常规代码结构_冰风漫天_新浪博客

public class MyHelloWorldView extends SurfaceView implements Callback, Runnable {

boolean isPause=false; 

SurfaceHolder sfh = null;

public MyHelloWorldView (Context context) {

super(context);

init(context);

}

public MyHelloWorldView (Context context, AttributeSet attrs) {

super(context, attrs);

init(context);

}

void init(Context context)

{

   sfh = this.getHolder();

   sfh.addCallback(this);

}

@Override

public void run() {

if(!isPause)

{

try {

                                updateFrame();

render();

Thread.sleep(50);

} catch (InterruptedException e) {

e.printStackTrace();

}

}

}

        void updateFrame() // 更新每帧的动画内容，处理数据

{}

void render()

{

Canvas canvas = sfh.lockCanvas(); 

 

   if(canvas != null)

{

  canvas.save();  

   //canvas.drawxxx

  

  canvas.restore(); 

  sfh.unlockCanvasAndPost(canvas); 

        }

}

@Override

public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {

}

@Override

public void surfaceCreated(SurfaceHolder arg0) {

Thread th = new Thread(this);

th.start();

}

@Override

public void surfaceDestroyed(SurfaceHolder arg0) {

}

}