android - 如何取消所有未决警报

Question

在我的应用中，我想让用户删除他们设置的闹钟。

我是这样设置闹钟的:

    ArrayList<Long> alarmDates = DateAndTimeAssistant.turnReminderTimesIntoActualDates(reminderHolder);
    alarms = new ArrayList<Alarm>();
    for (long alarmDate : alarmDates) {
        Alarm alarm = new Alarm();
        alarm.setTimeInMiliseconds(alarmDate);
        alarm.setReminderHolderId(reminderHolder);
        alarm.setTitle("title");
        alarm.setDescription("description");
        alarms .add(alarm);
    }

然后我将它们插入到 DB 和 onSuccess 中，我这样做:

DateAndTimeAssistant.addAlarmsToPushNotificationService(alarms);

这是那里发生的事情:

for (Alarm alarm : alarms) {
        Calendar alarmCalendar = Calendar.getInstance();
        alarmCalendar.setTimeInMillis(alarm.getTimeInMiliseconds());

        Intent intent = new Intent(context, PushNotificationReceiver.class);
        intent.putExtra("notificationTitle", alarm.getTitle());
        intent.putExtra("notificationText", alarm.getDescription());


        PendingIntent pendingIntent = PendingIntent.getBroadcast(context, (int) alarmCalendar.getTimeInMillis(), intent, 0); // The second arg is unique id

        AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE); // Service.ALARM_SERVICE
        alarmManager.set(AlarmManager.RTC_WAKEUP, alarmCalendar.getTimeInMillis(), pendingIntent);
    }

现在，在与开始这一切的 Activity 完全不同的 Activity 中，我想删除闹钟。

我在一篇文章中找到了如下一段代码:

        for (long alarmTime : alarms) { // This is the unique ID of the pendingIntent I created earlier
            PendingIntent pIntent = PendingIntent.getBroadcast(a, (int) alarmTime, intent, PendingIntent.FLAG_CANCEL_CURRENT);

但我不知道在这里传递什么作为“Intent ”？

编辑:根据我得到的第一个答案，我像这样更改了代码:

Intent intent = new Intent(context, PushNotificationReceiver.class);

        for (long alarmTime : alarms) { // This is the unique ID of the pendingIntent I created earlier
            PendingIntent pIntent = PendingIntent.getBroadcast(a, (int) alarmTime, intent, PendingIntent.FLAG_CANCEL_CURRENT);
}

但是在假定的删除之后警报仍然继续响起。还有什么可能出错？我现在意识到我没有对我创建的这个 PendingIntent 做任何事情。我应该用它做什么？

编辑 2:
现在我添加了一个警报管理器，我将未决的 Intent 传递给它，然后取消它们，但它仍然不起作用

        AlarmManager alarmManager = (AlarmManager) a.getSystemService(Context.ALARM_SERVICE);
        Intent intent = new Intent(a, PushNotificationReceiver.class);
        for (long alarmTime : alarms) {
            PendingIntent pIntent = PendingIntent.getBroadcast(a, (int) alarmTime, intent, PendingIntent.FLAG_CANCEL_CURRENT);
            // Cancel alarms
            try {
                alarmManager.cancel(pIntent);
            } catch (Exception e) {
               // Cant do anything about it.
            }
        }

Answer 1

您需要创建与创建警报时使用的相同的 Intent。注意比较Intents的时候会忽略extra，所以只需要

Intent intent = new Intent(context, PushNotificationReceiver.class);