Android 定时更新UI

public class HandlerDemo extends Activity {
    
    //title为setTitle方法提供变量,这里为了方便我设置成了int型
    private int title = 0;
    
    private Handler mHandler = new Handler(){
        
        public void handleMessage(Message msg) {
            switch (msg.what) {
            case 1:
                updateTitle();
                break;
            }
        };
    };
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        Timer timer = new Timer();
        timer.scheduleAtFixedRate(new MyTask(), 1, 5000);
    }
        
    private class MyTask extends TimerTask{
        @Override
        public void run() {
            
            Message message = new Message();
            message.what = 1;
            mHandler.sendMessage(message);
            
        }   
    }
    
    
    public void updateTitle(){
        
        setTitle("Welcome to Mr Wei's blog " + title);
        title ++;
    }
}