Firebase Cloud Messaging development and release profile

Question

I recendly swtiched over from Google Cloud Messaging to Firebase Cloud Messaging.

With GCM I had to choose the sandbox option. As described here : https://developers

Answer 1

I followed the documentation provided and was having the same issue, then I tried the quick start app and it worked. The key seems to be to add the logic to connect to the FCM after obtaining a token, this step is missing in the setup documentation. After I did this it worked on my development device outside of TestFlight without any other special sandbox switches.

https://github.com/firebase/quickstart-ios/blob/master/messaging/FCM/AppDelegate.m#L85

// [START refresh_token]
- (void)tokenRefreshNotification:(NSNotification *)notification {
  // Note that this callback will be fired everytime a new token is generated, including the first
  // time. So if you need to retrieve the token as soon as it is available this is where that
  // should be done.
  NSString *refreshedToken = [[FIRInstanceID instanceID] token];
  NSLog(@"InstanceID token: %@", refreshedToken);

  // Connect to FCM since connection may have failed when attempted before having a token.
  [self connectToFcm];

  // TODO: If necessary send token to appliation server.
}
// [END refresh_token]

// [START connect_to_fcm]
- (void)connectToFcm {
  [[FIRMessaging messaging] connectWithCompletion:^(NSError * _Nullable error) {
    if (error != nil) {
      NSLog(@"Unable to connect to FCM. %@", error);
    } else {
      NSLog(@"Connected to FCM.");
    }
  }];
}
// [END connect_to_fcm]

- (void)applicationDidBecomeActive:(UIApplication *)application {
  [self connectToFcm];
}

// [START disconnect_from_fcm]
- (void)applicationDidEnterBackground:(UIApplication *)application {
  [[FIRMessaging messaging] disconnect];
  NSLog(@"Disconnected from FCM");
}
// [END disconnect_from_fcm]