Android 警报管理器未触发，正在尝试发送通知

Question

我正在尝试设置一个一次性闹钟来唤醒我的应用程序，然后向用户发送通知。

我将闹钟设置为未来 1 分钟，但我的广播接收器从未被调用。

这就是我安排 AlarmManager 和构建 Notification 的方式：

private void scheduleNotification(Date notificationdate) {
    Log.d("PSBMF", "scheduling notification at "+notificationdate);

    Intent intent = new Intent(Intent.ACTION_DIAL);
    intent.setData(Uri.parse("tel:"+AppController.statewidephone));
    PendingIntent pendingIntent = PendingIntent.getActivity(getActivity(), 0, intent, 0);

    String notificationmessage = "Test Message";
    String channelid = "Channel Id";
    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(getActivity(), channelid)
            .setSmallIcon(R.drawable.ic_warning_black_36dp)
            .setContentTitle("Notification Title")
            .setContentText("Notification Content")
            .setStyle(new NotificationCompat.BigTextStyle().bigText("Notification Content"))
            .setPriority(NotificationCompat.PRIORITY_MAX)
            .setContentIntent(pendingIntent)
            .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
            .setDefaults(Notification.DEFAULT_ALL)
            ;

    Notification notification = mBuilder.build();

    Intent notificationIntent = new Intent(mActivity, NotificationPublisher.class);
    notificationIntent.putExtra(NotificationPublisher.NOTIFICATION_ID, 1);
    notificationIntent.putExtra(NotificationPublisher.NOTIFICATION, notification);
    PendingIntent pendingAlarmIntent = PendingIntent.getBroadcast(mActivity, 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);

    long notificationTimeInMillis = notificationdate.getTime();
    AlarmManager alarmManager = (AlarmManager)mActivity.getSystemService(Context.ALARM_SERVICE);
    alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, notificationTimeInMillis, pendingAlarmIntent);

}

我的 NotificationPublisher.class 看起来像这样：

public class NotificationPublisher extends BroadcastReceiver {

    public static String NOTIFICATION_ID = "notification-id";
    public static String NOTIFICATION = "notification";

    public void onReceive(Context context, Intent intent) {

        Log.d("NP", "NOTIFICATION RECEIVED: "+context);

        NotificationManager notificationManager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);

        Notification notification = intent.getParcelableExtra(NOTIFICATION);
        int id = intent.getIntExtra(NOTIFICATION_ID, 0);
        notificationManager.notify(id, notification);

    }
}

并且我已经通过将其放入清单的 <application/> 标记中来注册了我的 NotificationPublisher/BroadcastReceiver：

<receiver android:name=".NotificationPublisher"/>

我还缺少什么？为什么我的警报不会被触发并调用 onReceive 方法？

Answer 1

我想我解决了我的问题：

alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, notificationTimeInMillis, pendingAlarmIntent);

应该是

alarmManager.set(AlarmManager.RTC_WAKEUP, notificationTimeInMillis, pendingAlarmIntent);

Answer 2

尝试动态注册您的广播

NotificationPublisher myBroadcastReceiver = new NotificationPublisher();// Register the broadcast
registerReceiver(myBroadcastReceiver, intentFilter);

并改变这个 alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,notificationTimeInMillis, pendingAlarmIntent); 至

alarmManager.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,notificationTimeInMillis, pendingAlarmIntent);

Answer 3

感觉link这与broadcast receivers的变化有关。

在清单中注册接收器将不再有效基于：

Note: If your app targets API level 26 or higher, you cannot use the manifest to declare a receiver for implicit broadcasts (broadcasts that do not target your app specifically), except for a few implicit broadcasts that are exempted from that restriction. In most cases, you can use scheduled jobs instead.

以上注释复制自 link。

希望对您有所帮助。

Android 警报管理器未触发，正在尝试发送通知

Android Alarm Manager not firing, trying to send Notification

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alarmmanager

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