android - 无法在 Android 上使用 AlarmManager 安排通知(使用 Qt)

Question

我正在从 qt 5.5 执行以下操作。项目。

我正在尝试使用 android 中的警报管理器安排本地通知。这是安排通知的代码:

class ScheduledNotifications {
    static public int notification_id = 0;
    static int scheduleNotification(String title, String content, int futureInMilliseconds) {
        ++notification_id;

        Intent notificationIntent = new Intent(QtNative.activity(),  NotificationPublisher.class);
        notificationIntent.putExtra(NotificationPublisher.NOTIFICATION_ID, notification_id);
        notificationIntent.putExtra(NotificationPublisher.NOTIFICATION, createNotification(title,content));
        PendingIntent pendingIntent = PendingIntent.getBroadcast(QtNative.activity(), 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);

        AlarmManager alarmManager = (AlarmManager)QtNative.activity().getSystemService(Context.ALARM_SERVICE);
        alarmManager.set(AlarmManager.RTC_WAKEUP, /*futureInMilliseconds*/0, pendingIntent);

        Log.d("!" ,"Scheduled");
        return notification_id;
    }

    static public Notification createNotification(String title, String content) {
            Notification.Builder builder = new Notification.Builder(QtNative.activity());


            builder.setContentTitle(title);
            builder.setContentText(content);
            return builder.build();
    }
}

这是 NotificationPublisher，它应该显示通知:

class NotificationPublisher extends BroadcastReceiver {

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

    public void onReceive(Context context, Intent intent) {//Called when its time to show the notification ...

        Log.d("!", "Notified");
        NotificationManager notificationManager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);

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

    }
}

对于调试程序，我将“唤醒”时间设置为 0(因此通知应立即出现)。

Lod.d("!","Scheduled") 输出出现在控制台输出中，但是 Log.d("!", "Notified") 没有。那么我是否以某种方式安排了警报不正确？

Answer 1

老实说，不能 100% 确定为什么你的不工作，但我怀疑是传入的 0。我认为这应该是 System.currentTimeInMillis() + SOME_SHORT_INTERVAL？

这是警报管理器设置的一个工作示例。是的，我知道它的不同，但它是值得比较的东西

Intent syncIntent = new Intent(this, SyncIntentService.class);
       syncIntent.putExtra(EXTRA_REQUEST_KEY,   
       SyncRequestTypes.REQUEST_BACKGROUND_SYNC.name());

    PendingIntent pi = PendingIntent.getService(this, 0, syncIntent,
      Intent.FLAG_ACTIVITY_NO_USER_ACTION);

    // Register first run and then interval for repeated cycles.


   alarmManager.setInexactRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,
            SystemClock.elapsedRealtime() + DEFAULT_INITIAL_RUN_TEST,
            DEFAULT_RUN_INTERVAL_TEST, pi);