Android中动态更新TextView上的文字

示例代码：

1、新线程，定时更新文字

class testThread extends Thread{
            public void run() {
              Message message = new Message();  
          mHandler.sendMessage(message); 
       }
}
//在handler中更新UI
private Handler mHandler = new Handler(){  
            public void handleMessage(Message msg) {  
                textView.setText("你想变的内容");
            };  
        };
//启动线程
new testThread().start();

 

　2、定时器，定时更新文字

private final Timer timer = new Timer(); 
private TimerTask task; 
Handler handler = new Handler() { 
    @Override 
    public void handleMessage(Message msg) { 
        // TODO Auto-generated method stub 
        textView.setText("XXXX");
        super.handleMessage(msg); 
    }
};

task = new TimerTask() { 
    @Override 
    public void run() { 
        // TODO Auto-generated method stub 
        Message message = new Message(); 
        message.what = 1; 
        handler.sendMessage(message); 
    } 
}; 


timer.schedule(task, 1000, 1000); 

在TimerTask中执行界面相关的代码，比如setText，程序会崩溃。下面这段代码就不能完成更新文字。

TimerTask task = new TimerTask(){     
     public void run(){     
       mShortTestNo.setText(" Pass"); 
   }     
 };     
Timer timer = new Timer();   
timer.schedule(task, 6000);