android 刷新View

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);

/* 实例化GameView对象 */
this.mGameView = new GameView(this);

// 设置显示为我们自定义的View(GameView)
setContentView(mGameView);

// 开启线程
new Thread(new GameThread()).start();
}

HandlermyHandler= new Handler()
{
//接收到消息后处理
public void handleMessage(Message msg)
{
switch (msg.what)
{
case Activity01.REFRESH:
mGameView.invalidate();
break;
}
super.handleMessage(msg);
}
};

class GameThread implements Runnable
{
public void run()
{
while (!Thread.currentThread().isInterrupted())
{
Message message = new Message();
message.what = Activity01.REFRESH;
//发送消息
Activity01.this.myHandler.sendMessage(message);
try
{
Thread.sleep(100);
}
catch (InterruptedException e)
{
Thread.currentThread().interrupt();
}
}
}
}
/**
* 当然可以将GameThread类这样写
* 同样可以更新界面，并且不在需要
* Handler在接受消息
class GameThread implements Runnable
{
public void run()
{
while (!Thread.currentThread().isInterrupted())
{
try
{
Thread.sleep(100);
}
catch (InterruptedException e)
{
Thread.currentThread().interrupt();
}
//使用postInvalidate可以直接在线程中更新界面
mGameView.postInvalidate();
}
}
}

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