Question

我正在创建通知系统我需要每小时发出通知，但现在它只提供一天通知

protected void onStart() {
        super.onStart();

            Calendar calendar = Calendar.getInstance();

            calendar.set(Calendar.HOUR_OF_DAY, 16);
            calendar.set(Calendar.MINUTE, 30);

            Intent intent = new Intent(getApplicationContext(),NotificationReceiver.class);

            PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(),100,intent,PendingIntent.FLAG_UPDATE_CURRENT);

            AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
            alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,calendar.getTimeInMillis(),alarmManager.INTERVAL_DAY,pendingIntent);

        }

Answer 1

您正在使用alarmManager.INTERVAL_DAY因此会每24小时执行一次，并使用alarmManager.INTERVAL_HOUR更改

Answer 2

     alarmManager. setRepeating  (AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),  alarmManager.INTERVAL_HOUR,   pendingIntent);

Answer 3

作为替代方案，您可以编写自己的类来扩展TimerTask，如

public class ReminderTask extends TimerTask {
    public void run() {
       System.out.println("Reminding you of something!"); 
    }
}

然后像这样开始：

Timer timer = new Timer();
timer.schedule(new ReminderTask(), 0, 3600000); // one hour in millis

但不可否认，Oussema Aroua的回答是在这种情况下的方法......

我怎么能每小时使用一次？现在每天都在工作16.30

3 个答案: