Question

我对CountDownTimer有疑问。我必须创建一个应用程序，允许用户每次单击按钮时将时间时间增加+1。然后在按钮停止点击后等待三秒钟，然后开始倒计时。

我在下面粘贴了我的代码。

我的问题是：我似乎无法使数字的递增正常工作，但似乎在我停止递增数字（onStop（））之后，它直接转到（onFinish（））。而不是去OnTick（）并将数字每秒减少1。我已经尝试了很多方法来解决这个问题，但一直困扰着。

任何人都可以带领我朝着正确的方向前进吗？任何帮助，将不胜感激。谢谢你们！

 @SuppressWarnings("unused")
    public class MainActivity extends Activity {
        public int countdown;
        Button stoptime;
        public TextView timedisplay;
        public Timer wavetimer;
        private long millisInFuture;
        private long countDownInterval;
        private long onclicktime;
        private long finished;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);     

        countdown = 01;
        stoptime = (Button) findViewById(R.id.button2);
        stoptime.setText("Stop Timer");

        timedisplay = (TextView) findViewById(R.id.mycounter);
        timedisplay.setText("0");
        wavetimer = new Timer (millisInFuture, 1000);
        finished = 0;
        stoptime.setOnClickListener(new OnClickListener(){

        public void onClick(View arg0) {
            wavetimer.onStop();
            //try{
            //  Thread.sleep(3000);
            //  wavetimer.start();

            //} catch (InterruptedException e) {

            //  e.printStackTrace();
        //  }


            //wavetimer.onTick(millisInFuture);
        }   

       });


    }



    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }



    public class Timer extends CountDownTimer  {
    public long millisInFuture;
    private long countDownInterval = 1000;
    private long currentelapsed;
    private long methodlimit;
    private long lapsedperiod;

    public Timer(long millisInFuture, long countDownInterval) {
        super(millisInFuture, countDownInterval);
    }


    public void onFinish() {
        if (millisInFuture == 0){
        timedisplay.setText("Countdown Finished");
        } else {
            timedisplay.setText("error");

        }
    }

    public void onStop() {
        wavetimer.cancel();
        millisInFuture = millisInFuture + 1;
        timedisplay.setText("Time Left: " + millisInFuture);

    }



    public void onTick(long millisUntilFinished) {
            millisInFuture = (millisInFuture - 1);
            timedisplay.setText("Time Left: " + millisInFuture / 1000);

        }

    } 

}

Answer 1

将此添加到您的代码中;

wavetimer.start();

：）

CountDownTimer-用户递增。问题

1 个答案: