Question

我在MainActivity中有两个活动设置的倒数计时器，我想当倒数计时器完成时它将进入下一个活动。但是它不会转到下一个活动的显示计时器。这是我的代码：

公共类MainActivity扩展了AppCompatActivity {

TextView txtViewDays,txtViewHours,txtViewMinutes,txtViewSecond;


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

    txtViewDays = findViewById(R.id.days);
    txtViewHours = findViewById(R.id.hours);
    txtViewMinutes = findViewById(R.id.minutes);
    txtViewSecond = findViewById(R.id.seconds);

    start_countdown_timer();
}

private void start_countdown_timer()
{
    SimpleDateFormat formatter = new SimpleDateFormat("dd.MM.yyyy, HH:mm:ss");
    formatter.setLenient(false);

    final long[] startTime = new long[1];

    String endTime = "23.06.2019, 22:56:10";
    long milliseconds=0;

    final CountDownTimer mCountDownTimer;

    Date endDate;
    try {
        endDate = formatter.parse(endTime);
        milliseconds = endDate.getTime();

    } catch (ParseException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    startTime[0] = System.currentTimeMillis();


    mCountDownTimer = new CountDownTimer(milliseconds, 1000) {
        @Override
        public void onTick(long millisUntilFinished) {


            Long serverUptimeSeconds =
                    (millisUntilFinished - startTime[0]) / 1000;

            String daysLeft = String.format("%d", serverUptimeSeconds / 86400);
            txtViewDays.setText(daysLeft);

            String hoursLeft = String.format("%d", (serverUptimeSeconds % 86400) / 3600);
            txtViewHours.setText(hoursLeft);

            String minutesLeft = String.format("%d", ((serverUptimeSeconds % 86400) % 3600) / 60);
            txtViewMinutes.setText(minutesLeft);
            Log.d("minutesLeft",minutesLeft);

            String secondsLeft = String.format("%d", ((serverUptimeSeconds % 86400) % 3600) % 60);
            txtViewSecond.setText(secondsLeft);
        }

        @Override
        public void onFinish() {
            Intent i = new Intent(MainActivity.this,New.class);
            startActivity(i);
            finish();
        }
    };
    mCountDownTimer.start();
}
}

我该怎么办？ N.B：代码已收集，我也尝试了，但我不能。谢谢

Answer 1

对于您的代码，您需要1561330519961ms，这意味着必须经过几天才能调用onFinish方法。我尝试用1分钟的时间来代替您的代码

milliseconds = endDate.getTime();

，效果很好。计时器结束后，它更改了活动。

---编辑---

此示例代码将运行6秒钟，然后调用onFinish方法

milliseconds = 6000
mCountDownTimer = new CountDownTimer(milliseconds, 1000) {
    @Override
    public void onTick(long millisUntilFinished) {

    }

    @Override
    public void onFinish() {
        Intent i = new Intent(MainActivity.this,Myclass.class);
        startActivity(i);
        finish();
    }
};
mCountDownTimer.start();

倒计时完成后，我将参加下一个活动吗？

1 个答案: