Alarmanager随机附带每日通知

Question

Currently I try to setup a Daily Notification in my app everything work, but the daily notifications doesn't work it comes randomly.

MainActivity how i set the Alarmanager:

Intent i = new Intent(this, NotificationDbReceiver.class);
    Intent start = new Intent(this, StartService.class);

    PendingIntent sender = PendingIntent.getBroadcast(this, 0, i, 0);
    Calendar calendar = Calendar.getInstance();
            Calendar now = Calendar.getInstance();
            calendar.set(Calendar.HOUR_OF_DAY, 10);
            calendar.set(Calendar.MINUTE, 00);
            calendar.set(Calendar.SECOND, 00);

            if (calendar.before(now)) {
                calendar.add(Calendar.DATE, 1);
            }

            AlarmManager am = (AlarmManager) this
                    .getSystemService(ALARM_SERVICE);

            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
                am.set(AlarmManager.RTC_WAKEUP,
                        AlarmManager.INTERVAL_DAY, sender);
            } else if (Build.VERSION_CODES.KITKAT <= Build.VERSION.SDK_INT && Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
                am.setExact(AlarmManager.RTC_WAKEUP,
                        AlarmManager.INTERVAL_DAY, sender);
            } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                am.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP,
                        AlarmManager.INTERVAL_DAY, sender);
            }

Thats my BroadcastReceiver:

@Override
public void onReceive(Context context, Intent intent) {

    Intent service1 = new Intent(context, StartService.class);
    context.startService(service1);
}

And this is my Service:

public class StartService extends Service {

private final int ID = 0;

private Context mContext;


@Override
public void onCreate() {
    super.onCreate();

    mContext = getBaseContext();

    Log.i("onCreate", "I'm in");

    createNotification();

}

@Nullable
@Override
public IBinder onBind(Intent intent) {
    return null;
}

private void createNotification() {
    Log.i("createNotification", "I'm in");
    Uri soundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(mContext);
    mBuilder.setSmallIcon(R.drawable.ic_stat_notification)
            .setColor(ContextCompat.getColor(mContext, R.color.primary))
            .setContentTitle("Blablabla")
            .setContentText("Blablabla")
            .setStyle(new NotificationCompat.BigTextStyle().bigText("Blablabla"))
            .setSound(soundUri)
            .setDefaults(Notification.DEFAULT_VIBRATE)
            .setCategory(NotificationCompat.CATEGORY_MESSAGE)
            .setPriority(Notification.PRIORITY_HIGH)
            .setAutoCancel(true);

    Intent mIntent = new Intent(mContext, MainActivity.class);
    PendingIntent mPendingIntent = PendingIntent.getActivity(mContext, 0, mIntent, 0);
    mBuilder.setContentIntent(mPendingIntent);
    Notification mNotification = mBuilder.build();
    mNotification.flags = Notification.FLAG_ONLY_ALERT_ONCE | Notification.FLAG_AUTO_CANCEL;
    NotificationManagerCompat.from(mContext).notify(ID, mNotification);
}  
}

I hope someone can help me. I have already read some Questions here on stackoverflow, but no answer from the Questions helped me.

Answer 1

May be you are initializing the AlarmManager multiple times (for example, whenever the Activity starts). Try to set it only once and check.