使用CountDownTimer實現倒計時功能

public class myCount extends CountDownTimer {
public myCount(long millisInFuture, long countDownInterval) {
super(millisInFuture, countDownInterval);
}

    @Override
    public void onTick(long l) {
      //開始計時調用
    }

    @Override
    public void onFinish() {
       //結束調用的方法
    }
}
//60秒倒計時

myCount mCount = new myCount（60000, 1000);
mCount.start();