如何在倒數計時器中顯示分鐘和秒數

Question

我需要一些幫助。我無法正確顯示分鐘數，因爲它給出的是0而不是我想要的數字，但第二個工作正常。這是我的代碼：

new CountDownTimer(90000, 1000) { 
     @Override 
     public void onTick(long millisUntilFinished) { 
      tvTime.setText("Time remaining: " + String.format("%d min: %d sec", 
        TimeUnit.MICROSECONDS.toMinutes(millisUntilFinished), 
        TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) - 
        TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished)))); 
     } 
}); 

我希望它在1分鐘內顯示：30秒而不是0分鐘：在倒計時開始30秒。

Answer 1

試試這個

String text = String.format(Locale.getDefault(), "Time Remaining %02d min: %02d sec", 
       TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished) % 60, 
       TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) % 60); 
tvTime.setText(text); 

Answer 2

長millisUntilFinished是milisecond左 可以被甩除以它BU 1000 秒，並且可以通過60

Answer 3

int secondsUntilFinished = milisUntilFinished/1000; 

int seconds = secondsUntilFinished % 60; 
int mins = secondsUntilFinished/60; 

Answer 4

CountDownTimer myCountDownTimer = new CountDownTimer(
      i, 1000) { 
     @Override 
     public void onTick(long millisUntilFinished) { 

      int time = (int) millisUntilFinished; 
      int seconds = time/1000 % 60; 
      int minutes = (time/(1000 * 60)) % 60; 
      timeText.setText(twoDigitString(minutes) + " min: "+ twoDigitString(seconds)+ " sec"); 
     } 
     private String twoDigitString(long number) { 
      if (number == 0) { 
       return "00"; 
      } else if (number/10 == 0) { 
       return "0" + number; 
      } 
      return String.valueOf(number); 
     } 
     @Override 
     public void onFinish() { 
      timeText.setText("00:00"); 
     } 
     } 

獲得通過再次將它留給分鐘

試試這個代碼。

Answer 5

這種替換代碼：

new CountDownTimer(90000, 1000) { // adjust the milli seconds here 

    public void onTick(long millisUntilFinished) { 
    tvTime.setText("Time remaining: "+String.format("%d min, %d sec", 
        TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished), 
        TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) - 
        TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished)))); 
    } 

Answer 6

## Try this one ## 

private void startTimer(int noOfMinutes) { 
CountDownTimer countDownTimer = new CountDownTimer(noOfMinutes, 1000) { 
     public void onTick(long millisUntilFinished) { 
      long millis = millisUntilFinished; 
      //Convert milliseconds into hour,minute and seconds 
      String hms = String.format("%02d:%02d:%02d", TimeUnit.MILLISECONDS.toHours(millis), TimeUnit.MILLISECONDS.toMinutes(millis) - TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millis)), TimeUnit.MILLISECONDS.toSeconds(millis) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis))); 
      countdownTimerText.setText(hms);//set text 
     } 
     public void onFinish() { 
      countdownTimerText.setText("TIME'S UP!!"); //On finish change timer text 
     } 
    }.start(); 

}