iOS: Not Receiving FCM Push Notifications

[lvillacin]

Hello! I don't receive push notifications on iOS. My firebase console marks 0 received messages for my iOS app. However, my android notifications seem to work. Any help is greatly appreciated! Thank you very much!

What I have been able to do:

1. Saved GoogleService-Info.plist in app/ios.
2. Configured the APNs Authentication Key in the Firebase Project Settings
3. Configured Background Modules: Background Fetch, Background Processing & Remote Notifications and ; Push Notifications in my .xcworkspace
4. Make sure to ask for notification permission
5. Save an FCMtoken from the iOS device
6. Send a message from my server, which marks with success.

My Podfile looks like this:

target 'app' do
  config = use_native_modules!

  use_react_native!(:path => config["reactNativePath"])

  pod 'Firebase/Core'
  pod 'Firebase/Messaging'
  pod 'Firebase/Crashlytics'
  pod 'Firebase/Analytics'
  pod 'RNFBMessaging', :path => '../node_modules/@react-native-firebase/messaging'

My AppDelegate.m looks like this:

#import <React/RCTLinkingManager.h>

#import "AppDelegate.h"

#import <React/RCTBridge.h>
#import <React/RCTBundleURLProvider.h>
#import <React/RCTRootView.h>
#import <React/RCTLog.h>
#import <Firebase.h>
#import <FirebaseMessaging.h>

#ifdef FB_SONARKIT_ENABLED
#import <FlipperKit/FlipperClient.h>
#import <FlipperKitLayoutPlugin/FlipperKitLayoutPlugin.h>
#import <FlipperKitUserDefaultsPlugin/FKUserDefaultsPlugin.h>
#import <FlipperKitNetworkPlugin/FlipperKitNetworkPlugin.h>
#import <SKIOSNetworkPlugin/SKIOSNetworkAdapter.h>
#import <FlipperKitReactPlugin/FlipperKitReactPlugin.h>



static void InitializeFlipper(UIApplication *application) {
  FlipperClient *client = [FlipperClient sharedClient];
  SKDescriptorMapper *layoutDescriptorMapper = [[SKDescriptorMapper alloc] initWithDefaults];
  [client addPlugin:[[FlipperKitLayoutPlugin alloc] initWithRootNode:application withDescriptorMapper:layoutDescriptorMapper]];
  [client addPlugin:[[FKUserDefaultsPlugin alloc] initWithSuiteName:nil]];
  [client addPlugin:[FlipperKitReactPlugin new]];
  [client addPlugin:[[FlipperKitNetworkPlugin alloc] initWithNetworkAdapter:[SKIOSNetworkAdapter new]]];
  [client start];
}
#endif

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  if ([FIRApp defaultApp] == nil) {
      [FIRApp configure];
  }

  #ifdef FB_SONARKIT_ENABLED
    InitializeFlipper(application);
  #endif

  RCTBridge *bridge = [[RCTBridge alloc] initWithDelegate:self launchOptions:launchOptions];
  RCTRootView *rootView = [[RCTRootView alloc] initWithBridge:bridge
                                                   moduleName:@"yapper"
                                            initialProperties:nil];

  rootView.backgroundColor = [[UIColor alloc] initWithRed:1.0f green:1.0f blue:1.0f alpha:1];

  self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
  UIViewController *rootViewController = [UIViewController new];
  rootViewController.view = rootView;
  self.window.rootViewController = rootViewController;
  [self.window makeKeyAndVisible];

  UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"LaunchScreen" bundle:[NSBundle mainBundle]];
  UIViewController *launchScrenViewController = [storyboard instantiateInitialViewController];

  [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]];
  [[UIApplication sharedApplication] registerForRemoteNotifications];

  launchScrenViewController.view.frame = self.window.bounds;
  rootView.loadingView = launchScrenViewController.view;

  return YES;
}

- (NSURL *)sourceURLForBridge:(RCTBridge *)bridge
{
#if DEBUG
  return [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:@"index" fallbackResource:nil];
#else
  return [[NSBundle mainBundle] URLForResource:@"main" withExtension:@"jsbundle"];
#endif
}

- (BOOL)application:(UIApplication *)app openURL:(NSURL *)url
 options:(NSDictionary<UIApplicationOpenURLOptionsKey,id> *)options
{
 return [RCTLinkingManager application:app openURL:url options:options];
}

- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken
{
[FIRMessaging messaging].APNSToken = deviceToken;
}

@end

My AppDelagate.h looks like this:

#import <React/RCTBridgeDelegate.h>
#import <UIKit/UIKit.h>
#import <FirebaseMessaging.h>

@interface AppDelegate : UIResponder <UIApplicationDelegate, RCTBridgeDelegate, UNUserNotificationCenterDelegate, FIRMessagingDelegate>
//@interface AppDelegate : UIResponder <UIApplicationDelegate, RCTBridgeDelegate>

@property (nonatomic, strong) UIWindow *window;

@end

[mikehardy]

Hi there!
Some thoughts

• Always test cloud message sends from the command line. You'll want a quick shell script that posts to the FCM REST API using your admin key. That way you know exactly what JSON is going out
• For iOS make sure you have set content-available key in your JSON, this is in the docs you won't get delivery of data-only payloads without them

Other than that, without seeing exactly what JSON you are sending (minus your API key and the device token, of course) it's impossible to say what's going wrong

My work project uses data-only payloads extensively though and they work, so this will be project or payload specific, as a problem, I think

[lvillacin]

Hi @mikehardy Thank you. very much for replying! I was actually going to update this post because it just magically worked? I didn't change anything and I seemed to receive the notification. I'm not entirely sure what happened but I will continue to test!

Thank you very much!

[mikehardy]

You may have some latency in token generation (it's an asynchronous / network process) ? Hard to say. Glad it's working!