FCM Registration token not getting - ios

Question

I am new in iOS I am using firebase for iOS push notification and I am using objective c . According to firebase tutorial I am getting notifications properly back ground and foreground .Now I want registration tokens to make device groups for notifications.So am not getting registration token how can I do that, here is my code.
#import "AppDelegate.h"
#import Firebase;
#import FirebaseMessaging;
#import FirebaseInstanceID;
//#import <FirebaseMessaging/FirebaseMessaging.h>
//#import FirebaseMessaging;
#import UserNotifications;
//#import FirebaseMessaging;
#interface AppDelegate ()<UNUserNotificationCenterDelegate,FIRMessagingDelegate>
#end
#implementation AppDelegate
NSString *const kGCMMessageIDKey = #"gcm.message_id";
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
//setup configure
[FIRApp configure];
// [START set_messaging_delegate]
// [FIRMessaging messaging].delegate=self;
// [END set_messaging_delegate]
if ([UNUserNotificationCenter class] != nil) {
// iOS 10 or later
// For iOS 10 display notification (sent via APNS)
[UNUserNotificationCenter currentNotificationCenter].delegate = self;
UNAuthorizationOptions authOptions = UNAuthorizationOptionAlert |
UNAuthorizationOptionSound | UNAuthorizationOptionBadge;
[[UNUserNotificationCenter currentNotificationCenter]
requestAuthorizationWithOptions:authOptions
completionHandler:^(BOOL granted, NSError * _Nullable error) {
// ...
}];
} else {
// iOS 10 notifications aren't available; fall back to iOS 8-9 notifications.
UIUserNotificationType allNotificationTypes =
(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge);
UIUserNotificationSettings *settings =
[UIUserNotificationSettings settingsForTypes:allNotificationTypes categories:nil];
[application registerUserNotificationSettings:settings];
}
[application registerForRemoteNotifications];
return YES;
}
// [START receive_message]
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo{
// Print message ID.
if (userInfo[kGCMMessageIDKey]) {
NSLog(#"Message ID: %#", userInfo[kGCMMessageIDKey]);
}
// Print full message.
NSLog(#"%#", userInfo);
}
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler {
// If you are receiving a notification message while your app is in the background,
// this callback will not be fired till the user taps on the notification launching the application.
// TODO: Handle data of notification
// With swizzling disabled you must let Messaging know about the message, for Analytics
// [[FIRMessaging messaging] appDidReceiveMessage:userInfo];
// Print message ID.
if (userInfo[kGCMMessageIDKey]) {
NSLog(#"Message ID: %#", userInfo[kGCMMessageIDKey]);
}
// Print full message.
NSLog(#"%#", userInfo);
completionHandler(UIBackgroundFetchResultNewData);
}
// [END receive_message]
// [START ios_10_message_handling]
// Receive displayed notifications for iOS 10 devices.
// Handle incoming notification messages while app is in the foreground.
- (void)userNotificationCenter:(UNUserNotificationCenter *)center
willPresentNotification:(UNNotification *)notification
withCompletionHandler:(void (^)(UNNotificationPresentationOptions))completionHandler {
NSDictionary *userInfo = notification.request.content.userInfo;
// With swizzling disabled you must let Messaging know about the message, for Analytics
// [[FIRMessaging messaging] appDidReceiveMessage:userInfo];
// Print message ID.
if (userInfo[kGCMMessageIDKey]) {
NSLog(#"Message ID: %#", userInfo[kGCMMessageIDKey]);
}
// Print full message.
NSLog(#"%#", userInfo);
// Change this to your preferred presentation option
completionHandler(UNNotificationPresentationOptionAlert);
NSLog(#"App is on foreground");
}
// Handle notification messages after display notification is tapped by the user.
- (void)userNotificationCenter:(UNUserNotificationCenter *)center
didReceiveNotificationResponse:(UNNotificationResponse *)response
withCompletionHandler:(void(^)(void))completionHandler {
NSDictionary *userInfo = response.notification.request.content.userInfo;
if (userInfo[kGCMMessageIDKey]) {
NSLog(#"Message ID: %#", userInfo[kGCMMessageIDKey]);
}
// Print full message.
NSLog(#"%#", userInfo);
completionHandler();
}
// [END ios_10_message_handling]
// [START refresh_token]
- (void)messaging:(FIRMessaging *)messaging didReceiveRegistrationToken:(NSString *)fcmToken {
NSLog(#"FCM registration token: %#", fcmToken);
// Notify about received token.
NSDictionary *dataDict = [NSDictionary dictionaryWithObject:fcmToken forKey:#"token"];
[[NSNotificationCenter defaultCenter] postNotificationName:
#"FCMToken" object:nil userInfo:dataDict];
NSLog(#"All is done");
// TODO: If necessary send token to application server.
// Note: This callback is fired at each app startup and whenever a new token is generated.
}
// [END refresh_token]
// [START ios_10_data_message]
// Receive data messages on iOS 10+ directly from FCM (bypassing APNs) when the app is in the foreground.
// To enable direct data messages, you can set [Messaging messaging].shouldEstablishDirectChannel to YES.
- (void)messaging:(FIRMessaging *)messaging didReceiveMessage:(FIRMessagingRemoteMessage *)remoteMessage {
NSLog(#"Received data message: %#", remoteMessage.appData);
}
// [END ios_10_data_message]
- (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error {
NSLog(#"Unable to register for remote notifications: %#", error);
}
- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
// Get Device Tokens....
NSLog(#"APNs device token retrieved: %#", deviceToken);
// With swizzling disabled you must set the APNs device token here.
// [FIRMessaging messaging].APNSToken = deviceToken;
}

Answer 1

You need to uncomment this line:
[FIRMessaging messaging].delegate=self;
FCM provides the token via FIRMessagingDelegate's messaging:didReceiveRegistrationToken: method and you need to assign a delegate to FIRMessaging in order for that method to be called.