android AnalogClock 时钟用法

最新推荐文章于 2021-05-27 09:33:59 发布

原创最新推荐文章于 2021-05-27 09:33:59 发布 · 1.3k 阅读

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#android #AnalogClock

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这篇博客详细介绍了如何在Android应用中使用AnalogClock组件，并通过一个自定义线程和Handler，实时更新TextView中的时间，实现时钟与文本时间同步变化的效果。

前面的textview中内容随着时钟变动

public AnalogClock clock;
public Calendar calendar;
public TextView tv;
public Handler mhandler;
private static final int count = 0x1234;
public int minut;
public int hour;
public Thread mthread;
@Override
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
   tv = (TextView) findViewById(R.id.aimi);
  clock = (AnalogClock) findViewById(R.id.analogClock1);
  mhandler = new Handler(){

@Override
public void handleMessage(Message msg) {

    switch (msg.what) {
    case MainActivity.count:
     tv.setText(hour+":"+minut);
     break;
    }

    super.handleMessage(msg);
   }

  };
  mthread = new loopthread();
  mthread.start();
}

class loopthread extends Thread{

  @Override
  public void run() {
   super.run();
   try {
    do {
     long time = java.lang.System.currentTimeMillis();
     calendar = Calendar.getInstance();
     calendar.setTimeInMillis(time);
     hour = calendar.get(Calendar.HOUR);
     minut = calendar.get(Calendar.MINUTE);
     Thread.sleep(1000);
     Message m = new Message();
     m.what = MainActivity.count;
     MainActivity.this.mhandler.sendMessage(m);
    } while (MainActivity.loopthread.interrupted()==false);
   } catch (Exception e) {
    // TODO: handle exception
   }





  }

}