Question

我正在尝试设置一次性闹钟，它会唤醒我的应用，然后向用户发送通知。

我将来会设置闹钟1分钟，但我的广播接收器从未被呼叫过。

这是我安排AlarmManager并构建Notification：

的方法

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);

    }
}

我已将NotificationPublisher/BroadcastReceiver注册到我的清单的<application/>标记内：

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

我还缺少什么？为什么我的闹钟不会被触发并调用onReceive方法？

Answer 1

我想我发现了我的问题：

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

应该是

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

Answer 2

感觉链接与broadcast receivers的更改有关。

在清单中注册接收器将不再基于以下方式工作：

注意：如果您的应用程序的目标是API级别26或更高级别，则您无法使用清单声明隐式广播的接收方（特定地不针对您的应用的广播），除了一些免除该限制的隐式广播。在大多数情况下，您可以改为使用预定作业。

上面的注释是从link复制的。

希望这有帮助。

Answer 3

尝试动态注册您的广播

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

改变这一点 alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,notificationTimeInMillis, pendingAlarmIntent); 到

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

Android Alarm Manager未触发，尝试发送通知

3 个答案: