LocalNotification with AlarmManager and BroadcastReceiver not firing up in Android O (oreo)

Question

I've got my local notifications running on androids prior to SDK 26

But in a Android O I've got the following warning, and the broadcast receiver is not fired.

W/BroadcastQueue: Background execution not allowed: receiving Intent { act=package.name.action.LOCAL_NOTIFICATION cat=[com.category.LocalNotification] flg=0x14 (has extras) } to package.name/com.category.localnotifications.LocalNotificationReceiver 

From what I've read broadcast receivers are more restricted in android O, but if so, how should I schedule the broadcast if I want it launching even if the main activity is not running?

Should I use services instead of receivers?

This is the AlarmManager launch code:

public void Schedule(String aID, String aTitle, String aBody, int aNotificationCode, long aEpochTime) {     Bundle lExtras = new Bundle();     lExtras.putInt("icon", f.getDefaultIcon());     lExtras.putString("title", aTitle);     lExtras.putString("message", aBody);     lExtras.putString("id", aID);     lExtras.putInt("requestcode", aNotificationCode);      Intent lIntent =        new Intent(LocalNotificationScheduler.ACTION_NAME)       .addCategory(NotificationsUtils.LocalNotifCategory)       .putExtras(lExtras);      PendingIntent lPendIntent = PendingIntent.getBroadcast(f.getApplicationContext(), aNotificationCode,                                                            lIntent, PendingIntent.FLAG_UPDATE_CURRENT);      AlarmManager lAlarmMgr = (AlarmManager) f.getSystemService(Context.ALARM_SERVICE);     lAlarmMgr.set(AlarmManager.RTC, 1000, lPendIntent); } 

This is the receiver code:

public class LocalNotificationReceiver extends BroadcastReceiver {  public static native void   nativeReceiveLocalNotification (String aID, String aTitle, String aMessage, boolean aOnForeground );  /** This method receives the alarms set by LocalNotificationScheduler, *   notifies the CAndroidNotifications c++ class, and (if needed) ships a notification banner  */ @Override public void onReceive(Context aContext, Intent aIntent) {     Toast.makeText(context, text, duration).show(); } 

}

Android manifest:

<receiver android:name="com.category.localnotifications.LocalNotificationReceiver">         <intent-filter>             <action android:name="${applicationId}.action.LOCAL_NOTIFICATION" />             <category android:name="com.category.LocalNotification" />         </intent-filter>     </receiver> 

Answer 1

Android O are pretty new to-date. Hence, I try to digest and provide as accurate possible information.

From https://developer.android.com/about/versions/oreo/background.html#broadcasts

• Apps that target Android 8.0 or higher can no longer register broadcast receivers for implicit broadcasts in their manifest.
  • Apps can use Context.registerReceiver() at runtime to register a receiver for any broadcast, whether implicit or explicit.
• Apps can continue to register explicit broadcasts in their manifest.

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Also, in https://developer.android.com/training/scheduling/alarms.html , the examples are using explicit broadcast, and doesn't mention anything special regarding Android O.

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May I suggest you try out explicit broadcast as follow?

public static void startAlarmBroadcastReceiver(Context context, long delay) {     Intent _intent = new Intent(context, AlarmBroadcastReceiver.class);     PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, _intent, 0);     AlarmManager alarmManager = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);     // Remove any previous pending intent.     alarmManager.cancel(pendingIntent);     alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + delay, pendingIntent);         } 

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AlarmBroadcastReceiver

public class AlarmBroadcastReceiver extends BroadcastReceiver {       @Override     public void onReceive(Context context, Intent intent) {     }  } 

In AndroidManifest, just define the class as

<receiver android:name="org.yccheok.AlarmBroadcastReceiver" > </receiver> 

Answer 2

Today i had the same problem and my notification was not working. I thought Alarm manager is not working in Oreo but the issue was with Notification. In Oreo we need to add Channel id. Please have a look into my new code:

int notifyID = 1;  String CHANNEL_ID = "your_name";// The id of the channel.  CharSequence name = getString(R.string.channel_name);// The user-visible name of the channel. int importance = NotificationManager.IMPORTANCE_HIGH; NotificationChannel mChannel = new NotificationChannel(CHANNEL_ID, name, importance); // Create a notification and set the notification channel. Notification notification = new Notification.Builder(HomeActivity.this)             .setContentTitle("Your title")             .setContentText("Your message")             .setSmallIcon(R.drawable.notification)             .setChannelId(CHANNEL_ID)             .build(); 

Check this solution. It worked like charm.

https://stackoverflow.com/a/43093261/4698320

I am showing my method:

public static void pendingListNotification(Context context, String totalCount) {         String CHANNEL_ID = "your_name";// The id of the channel.         CharSequence name = context.getResources().getString(R.string.app_name);// The user-visible name of the channel.         int importance = NotificationManager.IMPORTANCE_HIGH;         NotificationCompat.Builder mBuilder;          Intent notificationIntent = new Intent(context, HomeActivity.class);         Bundle bundle = new Bundle();         bundle.putString(AppConstant.PENDING_NOTIFICATION, AppConstant.TRUE);//PENDING_NOTIFICATION TRUE         notificationIntent.putExtras(bundle);          notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_MULTIPLE_TASK);          PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);          NotificationManager mNotificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);          if (android.os.Build.VERSION.SDK_INT >= 26) {             NotificationChannel mChannel = new NotificationChannel(CHANNEL_ID, name, importance);             mNotificationManager.createNotificationChannel(mChannel);             mBuilder = new NotificationCompat.Builder(context) //                .setContentText("4")                     .setSmallIcon(R.mipmap.logo)                     .setPriority(Notification.PRIORITY_HIGH)                     .setLights(Color.RED, 300, 300)                     .setChannelId(CHANNEL_ID)                     .setContentTitle(context.getResources().getString(R.string.yankee));         } else {             mBuilder = new NotificationCompat.Builder(context) //                .setContentText("4")                     .setSmallIcon(R.mipmap.logo)                     .setPriority(Notification.PRIORITY_HIGH)                     .setLights(Color.RED, 300, 300)                     .setContentTitle(context.getResources().getString(R.string.yankee));         }          mBuilder.setContentIntent(contentIntent);          int defaults = 0;         defaults = defaults | Notification.DEFAULT_LIGHTS;         defaults = defaults | Notification.DEFAULT_VIBRATE;         defaults = defaults | Notification.DEFAULT_SOUND;          mBuilder.setDefaults(defaults);         mBuilder.setContentText(context.getResources().getString(R.string.you_have) + " " + totalCount + " " + context.getResources().getString(R.string.new_pending_delivery));//You have new pending delivery.         mBuilder.setAutoCancel(true);         mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build());     }