android应用开发：实时改变TextView的值

线程实时刷新TextView值：

思路：

1）使用handler通知view修改值；

2）标志位控制线程的停止/开始;

/**

* 1、刷新线程

*

* @author wxm

*

*/

class RefreshThread implements Runnable {

public void run() {

while (isStop) {

try {

handler.sendMessage(handler.obtainMessage());

Thread.sleep(1000);

} catch (InterruptedException e) {

e.printStackTrace();

}

}

}

}

备注：sendMessage发送消息

/**

* 2、实时刷新界面

*/

Handler handler = new Handler() {

public void handleMessage(Message msg) {

super.handleMessage(msg);

System.out.println("count--->" + count);

if (count == 5) {

isStop = false;

try {

Thread.sleep(3000);

isStop = true;

count = 0;

new Thread(mRefreshThread).start();

} catch (InterruptedException e) {

e.printStackTrace();

}

}

textview.setText(String.valueOf(count++));

}

};

备注：接收消息，并修改停止/开始标志位

3、初始化控件

private TextView textview = null; // TextView 控件

private int count = 0;//初始化数值

private RefreshThread mRefreshThread = null;//刷新线程

private boolean isStop = true;// 线程控制标志

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

textview = (TextView) findViewById(R.id.textview);

mRefreshThread = new RefreshThread();

textview.setText(String.valueOf(count));

new Thread(mRefreshThread).start();// 开始进程

}