How to Avoid Common Push Notification Issues on iOS Devices Using Flutter, Objective-C, and MoEngage-iOS-SDK (Versions 7.x.x , 8.x.x, 9.x.x)?

Resolve push notification issues on iOS with Flutter and Objective-C. Covers Firebase proxy settings, deep linking, and MoEngage SDK configuration.

Problem

Common issues with Push notifications, including failed delivery, screen navigation, deep linking, and rich landing, are occurring on iOS devices using Flutter, Objective-C, and MoEngage-iOS-SDK (Versions 7.x.x, 8.x.x, 9.x.x).

Solution

Perform the following steps:

1. Firebase Proxy:
   • If you are not using Firebase push notifications, then disable the Firebase proxy by adding the FirebaseAppDelegateProxyEnabled key in info.plist with the value Boolean = False/NO.
   • Test the push notification. If successful, no further action is required. Otherwise, follow the steps below.
   • If you are using Firebase push notifications, skip this step and proceed with the following steps.
2. Disable MoEngage Proxy:
   • Add MoEngageAppDelegateProxyEnabled key in info.plist with the value Boolean = false/NO
3. Override didRegisterForRemoteNotificationsWithDeviceToken Function:
   • Override the didRegisterForRemoteNotificationsWithDeviceToken function of the AppDelegate.m file.
     Objective-C

     - (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken
     { 
       [super application: application didRegisterForRemoteNotificationsWithDeviceToken: deviceToken]; 
       
       //7.xx version
       [[MoEngage sharedInstance] setPushToken:deviceToken];
       
       //8.xx version
       [[MOMessaging sharedInstance] setPushToken:deviceToken];
       
       //9.xx version
       [[MoEngageSDKMessaging sharedInstance] setPushToken:deviceToken];
     }
     
4. Override UNUserNotificatoinCenterDelegate Functions:
   • Override the UNUserNotificatoinCenterDelegate functions in the AppDelegate.m file.
     Objective-C

     //Try without willPresent if it works good to go! else override it
     - (void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions))completionHandler {
       if (notification.request.content.userInfo != nil) {
         NSDictionary *dictionary = notification.request.content.userInfo;
         if (dictionary[@"moengage"] != nil) {
           completionHandler(UNAuthorizationOptionSound | UNAuthorizationOptionAlert | UNAuthorizationOptionBadge);
         } else {
           [super userNotificationCenter: center willPresentNotification: notification withCompletionHandler:completionHandler];
         }
     }
     - (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void (^)(void))completionHandler
     {
       [super userNotificationCenter: center didReceiveNotificationResponse: response withCompletionHandler: completionHandler];
       
       //7.xx version
       [[MoEngage sharedInstance] userNotificationCenter:center didReceiveNotificationResponse:response];
       //8.xx version
       [[MOMessaging sharedInstance] userNotificationCenter:center didReceive:response];
       
       //9.xx version
       [[MoEngageSDKMessaging sharedInstance] userNotificationCenter:center didReceive:response];
       
       completionHandler();
     }