Service Extensions

Jump to Notification Extender Service Android

Notification Service Extension

iOS

Setup instructions can be found in each individual SDK setup guide.

UNNotificationServiceExtension Apple doc

If you are planning to implement any of these features, the Notification Service Extension must be set up:

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Getting a payload from a notification iOS

In this example, we are setting Additional Data through the OneSignal dashboard to {"custom_message":"Hullabaloo, Caneck, Caneck"}

NSDictionary* dict = request.content.userInfo;
NSString* custom = [dict objectForKey:@"custom"];
NSString* aps = [dict objectForKey:@"aps"];

NSLog(@"Running NotificationServiceExtension: custom = %@", custom);
NSLog(@"Running NotificationServiceExtension: aps = %@", aps);

//  Converted to Swift 5.1 by Swiftify 
let dict = request.content.userInfo
let custom = dict["custom"] as? String
let aps = dict["aps"] as? String

print("Running NotificationServiceExtension: custom = \(custom ?? "")")
print("Running NotificationServiceExtension: aps = \(aps ?? "")")

Example console output:
The additional data can then be extracted from the custom object using the a parameter...

Notification Extender Service

Android
Note! This requires writing native Android code

Set up the NotificationExtenderService if you want to do one of the following:

Receive data in the background with or without displaying a notification.
Override specific notification settings depending on client side app logic such as custom accent color, vibration pattern, or other any other NotificationCompat options available. See Android's documentation on the NotificationCompat options.

OneSignal also supports sending additional data along with a notification as key value pairs. You can read this additional data when a notification is opened by adding a setNotificationOpenedHandler instead.

Setup

1. Create a class that extends NotificationExtenderService and implement the onNotificationProcessing method.

For Silent Notifications make sure to return true

Java

import com.onesignal.OSNotificationPayload;
import com.onesignal.NotificationExtenderService;

public class NotificationExtenderBareBonesExample extends NotificationExtenderService {
   @Override
   protected boolean onNotificationProcessing(OSNotificationReceivedResult receivedResult) {
      // Read properties from result.
     
      // Return true to stop the notification from displaying.
      return false;
   }
}

2. Add the following to your AndroidManifest.xml.

Replace 'YOUR_CLASS_NAME' with the class name you used above.

<service
   android:name=".YOUR_CLASS_NAME"
   android:permission="android.permission.BIND_JOB_SERVICE"
   android:exported="false">
   <intent-filter>
      <action android:name="com.onesignal.NotificationExtender" />
   </intent-filter>
</service>

3. To override or extend specific notification properties call displayNotification with OverrideSettings.

Java

import android.support.v4.app.NotificationCompat;
import com.onesignal.OSNotificationPayload;
import com.onesignal.NotificationExtenderService;
import java.math.BigInteger;

OSNotificationDisplayedResult displayedResult = displayNotification(overrideSettings);
      Log.d("OneSignalExample", "Notification displayed with id: " + displayedResult.androidNotificationId);

return true;
   }
}

import android.support.v4.app.NotificationCompat;
import com.onesignal.OSNotificationPayload;
import com.onesignal.NotificationExtenderService;
import java.math.BigInteger;

public class NotificationExtenderExample extends NotificationExtenderService {
   @Override
   protected boolean onNotificationProcessing(OSNotificationReceivedResult receivedResult) {
      OverrideSettings overrideSettings = new OverrideSettings();
      overrideSettings.extender = new NotificationCompat.Extender() {
         @Override
         public NotificationCompat.Builder extend(NotificationCompat.Builder builder) {
            // Sets the background notification color to Green on Android 5.0+ devices.
            return builder.setColor(new BigInteger("FF00FF00", 16).intValue());
         }
      };

      OSNotificationDisplayedResult displayedResult = displayNotification(overrideSettings);
      Log.d("OneSignalExample", "Notification displayed with id: " + displayedResult.androidNotificationId);

      return true;
   }
}

Getting a payload from a notification Android

The OSNotificationReceivedResult class has a parameter payload of type OSNotificationPayload which can be used to get the notification message, additional data, and more.

Additionally, the payload object has the following two parameters:

Name

Type

Details

restoring

boolean

True if the notification was restored after an app update, device reboot, and app opened after being force killed. If you have customized any alerting / priority settings check the restoring flag before applying them. You may want to omit displaying if your notification is no longer relevant to the user.

isAppInFocus

boolean

True if the app is open and in focus when the notification arrives.

EXAMPLE:

Java

public class NotificationExtenderExample extends NotificationExtenderService {
   @Override
   protected boolean onNotificationProcessing(OSNotificationReceivedResult receivedResult) {
      OverrideSettings overrideSettings = new OverrideSettings();
      overrideSettings.extender = new NotificationCompat.Extender() {
         @Override
         public NotificationCompat.Builder extend(NotificationCompat.Builder builder) {
            if (!receivedResult.restoring) {
               // Only set custom channel if notification is not being restored
               // Note: this would override any channels set through the OneSignal dashboard
               return builder.setChannelId("News");
            }
         }
      };
     
      /* Do something with notification payload */
      String title = receivedResult.payload.title;
      String body  = receivedResult.payload.body;
      String additionalData = receivedResult.payload.additionalData;
     
      // Writes additionalData values to local database
      SQLiteDatabase db = dbHelper.getWritableDatabase();
      ContentValues values = new ContentValues();
      values.put(FeedEntry.COLUMN_NAME_ARTICLE_TITLE, additionalData.articleTitle);
      values.put(FeedEntry.COLUMN_NAME_ARTICLE_ID, additionalData.articleId);
      long newRowId = db.insert(FeedEntry.TABLE_NAME, null, values);
      // ...
     
      return true;
   }
}

public class NotificationExtenderExample extends NotificationExtenderService {
   @Override
   protected boolean onNotificationProcessing(OSNotificationReceivedResult receivedResult) {
      OverrideSettings overrideSettings = new OverrideSettings();
      overrideSettings.extender = new NotificationCompat.Extender() {
         @Override
         public NotificationCompat.Builder extend(NotificationCompat.Builder builder) {
            if (!receivedResult.restoring) {
               // Only set custom channel if notification is not being restored
               // Note: this would override any channels set through the OneSignal dashboard
               return builder.setChannelId("News");
            }
         }
      };
     
      /* Do something with notification payload */
      String title = receivedResult.payload.title;
      String body  = receivedResult.payload.body;
      String additionalData = receivedResult.payload.additionalData;
     
      // Writes additionalData values to local database
      SQLiteDatabase db = dbHelper.getWritableDatabase();
      ContentValues values = new ContentValues();
      values.put(FeedEntry.COLUMN_NAME_ARTICLE_TITLE, additionalData.articleTitle);
      values.put(FeedEntry.COLUMN_NAME_ARTICLE_ID, additionalData.articleId);
      long newRowId = db.insert(FeedEntry.TABLE_NAME, null, values);
      // ...
     
      return true;
   }
}

Additional Notes

NotificationExtenderService is an Android IntentService so please do all your work synchronously. A wake lock is obtained so the device will not sleep while you're processing the payload.
By default BigTextStyle is set so to change the body text you must override the style with the following:
```
.setStyle(new NotificationCompat.BigTextStyle().bigText(message))
```
If you plan on setting a big picture make sure to check for this before setting the BigTextStyle style above.
See Android's documentation on the NotificationCompat options.

OneSignal Push Notification Service Documentation

OneSignal Help & Documentation

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Service Extensions

Notification Service Extension

Getting a payload from a notification iOS

Notification Extender Service

Setup

Getting a payload from a notification Android

Additional Notes

Service Extensions

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