FIREBASE_MESSAGING: onBackgroundMessage not handling notification when app is on Background or Terminated
When constructing a data notification, the notification
payload MUST be blank.
If the notification
payload is not empty, then the payload will be sent as a notification instead of a data message.
Jeremy Dormevil
Updated on December 20, 2022Comments
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Jeremy Dormevil over 1 year
I'm trying to get my onBackgroundMessage to execute when the app is on Background and a notification has been receive, but it doesn't execute myBackgroundMessageHandler.
I did everything that was written in the documentation at Optionally handle background messages, but it still doesn't work like i want, When i receive a notification when the app is on Background, What i get is a notification without data (no app icon and no images, only title and body text).Btw it's working well when the app is not onBackground
Here my code :
AndroidManifest.xml <application android:name=".Application"
index.js
message = { android: { notification: { click_action: 'FLUTTER_NOTIFICATION_CLICK',} }, token: androidNotificationToken, data: { activityFeedItemId:activityFeedItemId, userReceivingNotificationId: userId, userActivatingNotificationPhotoUrl: activityFeedItem.userProfileImg, notificationType: activityFeedItem.type, body : body } };
buildgradle
dependencies { testImplementation 'junit:junit:4.12' androidTestImplementation 'com.android.support.test:runner:1.0.2' androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2' implementation 'com.google.firebase:firebase-analytics:17.2.2' implementation 'com.android.support:multidex:1.0.3' implementation 'com.google.firebase:firebase-messaging:20.1.7' } apply plugin: 'com.google.gms.google-services'
MainActivity.java
package com.yimerah.ijn_amen; import androidx.annotation.NonNull; import io.flutter.embedding.android.FlutterActivity; import io.flutter.embedding.engine.FlutterEngine; import io.flutter.plugins.GeneratedPluginRegistrant; public class MainActivity extends FlutterActivity { @Override public void configureFlutterEngine(@NonNull FlutterEngine flutterEngine) { GeneratedPluginRegistrant.registerWith(flutterEngine); } }
Application.java
package com.yimerah.ijn_amen; import io.flutter.app.FlutterApplication; import io.flutter.plugin.common.PluginRegistry; import io.flutter.plugin.common.PluginRegistry.PluginRegistrantCallback; import io.flutter.plugins.GeneratedPluginRegistrant; import io.flutter.plugins.firebasemessaging.FlutterFirebaseMessagingService; import io.flutter.plugins.firebasemessaging.FirebaseMessagingPlugin; public class Application extends FlutterApplication implements PluginRegistrantCallback { @Override public void onCreate() { super.onCreate(); FlutterFirebaseMessagingService.setPluginRegistrant(this); } @Override public void registerWith(PluginRegistry registry) { FirebaseMessagingPlugin.registerWith(registry.registrarFor("io.flutter.plugins.firebasemessaging.FirebaseMessagingPlugin")); } }
OnBackgroundMessage
onBackgroundMessage: myBackgroundMessageHandler static myBackgroundMessageHandler{ final FirebaseUser firebaseUser = await auth.currentUser(); print("on message:$message\n"); final String userReceivingId = message['data']['userReceivingNotificationId']; final String body = message['data']['body']; final String notificationType = message['data']['notificationType']; final String notificationId = message['data']['activityFeedItemId']; if (userReceivingId == firebaseUser.uid) { int id = Uuid().parse(notificationId).reduce((a, b) => a + b); final String notificationMedia = message['data']['userActivatingNotificationPhotoUrl']; await showNotificationMediaStyle("", body, notificationMedia, id: id); print("Notification shown!"); } print("Notification not shown!"); }
Thank you in advance for your help,