CountDownTimer onTick（）无法更新类的成员

我更新onTick（）方法中的CountDownTimer内的字段。但是，该字段始终为0.您是否了解导致问题的原因？CountDownTimer onTick（）无法更新类的成员

public class Counter { 

    private static final long SECOND_MS = 1000; 
    private static final long MINUTE_MS = 60 * SECOND_MS; 
    private static final long TOTAL_TIME_MS = 5 * MINUTE_MS; 

    public long mSecondsSinceLastPick; 

    public long getSecondsSinceLastSchedulerStarted() { 
     Timber.d(String.format("get mSecondsSinceLastPick = %s", mSecondsSinceLastPick)); 
     return mSecondsSinceLastPick; 
    } 


    private CountDownTimer mCountDownTimer = new CountDownTimer(TOTAL_TIME_MS, SECOND_MS) { 

     public void onTick(long millisUntilFinished) { 
      Timber.d(String.format("onTick mSecondsSinceLastPick = %s", mSecondsSinceLastPick)); 
      mSecondsSinceLastPick = (TOTAL_TIME_MS - millisUntilFinished)/SECOND_MS; 
     } 

     public void onFinish() { 
     } 
    }; 

public void startCounting() { 
    mCountDownTimer.start(); 
} 
}

将帖子日志输出看起来像

06-19 15:42:57.293 9994-9994/com.nav.survey D/GroundTruthReminderManager:38: onTick mSecondsSinceLastPick = 4 
06-19 15:42:58.293 9994-9994/com.nav.survey D/GroundTruthReminderManager:38: onTick mSecondsSinceLastPick = 5 
06-19 15:42:59.299 9994-9994/com.nav.survey D/GroundTruthReminderManager:38: onTick mSecondsSinceLastPick = 6 
06-19 15:43:00.320 9994-9994/com.nav.survey D/GroundTruthReminderManager:38: onTick mSecondsSinceLastPick = 7 
06-19 15:43:01.321 9994-9994/com.nav.survey D/GroundTruthReminderManager:38: onTick mSecondsSinceLastPick = 8 
06-19 15:43:01.507 9994-9994/com.nav.survey D/GroundTruthReminderManager:22: get mSecondsSinceLastPick = 0 
06-19 15:43:02.322 9994-9994/com.nav.survey D/GroundTruthReminderManager:38: onTick mSecondsSinceLastPick = 9 
06-19 15:43:03.324 9994-9994/com.nav.survey D/GroundTruthReminderManager:38: onTick mSecondsSinceLastPick = 10 
06-19 15:43:04.325 9994-9994/com.nav.survey D/GroundTruthReminderManager:38: onTick mSecondsSinceLastPick = 11

来源

2017-06-19 qbait

的问题是，你不开始计时

mCountDownTimer.start();

或

private CountDownTimer mCountDownTimer = new CountDownTimer(TOTAL_TIME_MS, SECOND_MS) { 

    public void onTick(long millisUntilFinished) { 
     Timber.d(String.format("onTick mSecondsSinceLastPick = %s", mSecondsSinceLastPick)); 
     mSecondsSinceLastPick = (TOTAL_TIME_MS - millisUntilFinished)/SECOND_MS; 
    } 

    public void onFinish() { 
    } 
}.start();

来源

2017-06-19 14:58:51

我开始了，但忘了复制这段代码。一般来说，当我将它记录在onTick（）中时，一切都会正确显示。当我在getter中记录字段时，它总是0. – qbait

你什么时候得到它？你只有一次吗？ –

我在计数期间多次打电话给getter。我添加了日志。 – qbait

问题是与创造我的柜台。我使用Dagger @Singleton注解来提供Counter，但是无论如何，Counter的2个实例都被创建了，并且它引发了一个问题。

来源

2017-06-19 15:30:12 qbait

CountDownTimer onTick（）无法更新类的成员

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