如何使用在某一天结束并在另一天重新开始计数的计数器 (CountDown)？

Question

你好吗 我喜欢在一年中的每个星期日 10:00:00 上午 做一个活动 一次有效

示例：倒数计时器在周六结束，周日在 10:00:00，i 会在十点自动重启（ interval是一天在这个interval day我想在它关闭的那一天之后打开一个礼物）

    Calendar cal = Calendar.getInstance();
    cal.set(Calendar.HOUR_OF_DAY, 8);
    cal.set(Calendar.MINUTE, 19);
    cal.set(Calendar.SECOND, 20);
    if (cal.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY) {


        if (cal.get(Calendar.HOUR_OF_DAY) == 8) {


            Toast.makeText(getApplicationContext(), "synday is 8 oclock", Toast.LENGTH_SHORT).show();


            if (cal.get(Calendar.MINUTE) == 19) {

                Toast.makeText(getApplicationContext(), "synday is min", Toast.LENGTH_SHORT).show();


               resetTimer();


            } else {
                Toast.makeText(getApplicationContext(), "synday not  min", Toast.LENGTH_SHORT).show();

            }


        } else {

            Toast.makeText(getApplicationContext(), "synday no 8", Toast.LENGTH_SHORT).show();

        }
    } else {

        Toast.makeText(getApplicationContext(), "no sunday", Toast.LENGTH_SHORT).show();


    }


}

Answer 1

如果您想安排每周六重置定时器，您可以使用 Android 的 WorkManager。它支持每个 API 级别，因此您应该不会有任何问题。这是文档：https://developer.android.com/topic/libraries/architecture/workmanager

归结为：

导入这些依赖项

implementation "androidx.work:work-runtime:2.4.0"

定义你想做什么：

public class TimerResetWorker extends Worker {
   public TimerResetWorker(@NonNull Context context,@NonNull WorkerParameters params) {
       super(context, params);
   }

   @Override
   public Result doWork() {

     resetTimer(); //do what you want to do

     return Result.success(); //you have Result.failure() / retry() in case something goes wrong
   }
}

然后每 7 天安排一次作业（从星期六开始）：

 PeriodicWorkRequest mWork = new PeriodicWorkRequest.Builder(TimerResetWorker.class, 7, TimeUnit.DAYS).build();
 WorkManager.getInstance().enqueue(mWork);

如何使用在某一天结束并在另一天重新开始计数的计数器 (CountDown)？

How to work a counter that ends a certain day and restarts the count on another day (CountDown)?

java

android

android-studio

countdown