Firebase InstanceIDトークンiOSデバイスのリフレッシュ遅延

Question

iOSアプリケーションでFirebase Cloud Messagingを実装しました。 1つのことを除いて、すべてがうまくいくように見えます。アプリから起動してFirebaseでデバイストークンをリフレッシュするのに約10秒かかります。

私は、App委任でapplication:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptionsメソッドにこのコードを追加しました：

[FIRApp configure]; 

//Add an observer for handling a token refresh callback. 
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(tokenRefreshCallback:) name:kFIRInstanceIDTokenRefreshNotification object:nil]; 

そして、これはtokenRefreshCallback:方法である：

- (void)tokenRefreshCallback:(NSNotification *)notification { 

    NSString *refreshedToken = [[FIRInstanceID instanceID] token]; 
    NSLog(@"InstanceID token: %@", refreshedToken); 

    if ([[FIRInstanceID instanceID] token] != NULL) { 
     [[FIRMessaging messaging] subscribeToTopic:@"/topics/news"]; 
     NSLog(@"Subscribed to news topic"); 
    } 

    //Connect to FCM since connection may have failed when attempting before having a token 
    [self connectToFirebase]; 

} 

そして、これはロガーの関連する部分である。

2016-10-13 14:36:23.844 My-App[1111] <Debug> [Firebase/Core][I-COR000001] Configuring the default app. 
2016-10-13 14:36:26.492 My-App[1111:2222222] InstanceID token: (null) 
2016-10-13 14:36:32.732 My-App[1111:2222222] InstanceID token: c1kmaskdmj...(the actual device token) 

1. InstanceIDが（null）のときにtokenRefreshCallback:が呼び出されるのはなぜですか？

2. なぜ実際のトークンが取得される前に約10秒かかりますか？

Answer 1

私の場合は。画面間を移動するために逆回転を使用するときも同じ問題がありました。

すべてがうまくいきませんでした。

これは私のために働いていました。アプリケーションのdidFinishLaunchingWithOptionsでは、私は[self configureFirebase]を呼び出します。

- (void)configureFirebase { 
    [FIRApp configure]; 
    if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_9_x_Max) { 
     UIUserNotificationType allNotificationTypes = 
     (UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge); 
     UIUserNotificationSettings *settings = 
     [UIUserNotificationSettings settingsForTypes:allNotificationTypes categories:nil]; 
     [[UIApplication sharedApplication] registerUserNotificationSettings:settings]; 
    } else { 
     // iOS 10 or later 
#if defined(__IPHONE_10_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_10_0 
     UNAuthorizationOptions authOptions = 
     UNAuthorizationOptionAlert 
     | UNAuthorizationOptionSound 
     | UNAuthorizationOptionBadge; 
     [[UNUserNotificationCenter currentNotificationCenter] requestAuthorizationWithOptions:authOptions completionHandler:^(BOOL granted, NSError * _Nullable error) { 
     }]; 

     // For iOS 10 display notification (sent via APNS) 
     [UNUserNotificationCenter currentNotificationCenter].delegate = self; 
     // For iOS 10 data message (sent via FCM) 
     [FIRMessaging messaging].remoteMessageDelegate = self; 
#endif 
    } 

    [[UIApplication sharedApplication] registerForRemoteNotifications]; 
} 

も、私はこのメッセージを実装します。

// [START receive_message] 
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo { 
    if (!(application.applicationState == UIApplicationStateActive)) { 
     [AuthenticationController showAuthenticationViews:self.window]; 
    } 
    [self readNotification:userInfo]; 
} 

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler { 
    [self readNotification:userInfo]; 
    completionHandler(UIBackgroundFetchResultNewData); 
} 
// [END receive_message] 

// [START ios_10_message_handling] 
// Receive displayed notifications for iOS 10 devices. 
#if defined(__IPHONE_10_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_10_0 
// 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; 
    [self readNotification:userInfo]; 
    completionHandler(UNNotificationPresentationOptionNone); 
} 

// Handle notification messages after display notification is tapped by the user. 
- (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void (^)())completionHandler { 
    NSDictionary *userInfo = response.notification.request.content.userInfo; 
    [self readNotification:userInfo]; 
    completionHandler(); 
} 
#endif 
// [END ios_10_message_handling] 

// [START ios_10_data_message_handling] 
#if defined(__IPHONE_10_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_10_0 
// Receive data message on iOS 10 devices while app is in the foreground. 
- (void)applicationReceivedRemoteMessage:(FIRMessagingRemoteMessage *)remoteMessage { 
    // Print full message 
    //NSLog(@"%@", remoteMessage.appData); 
} 
#endif 
// [END ios_10_data_message_handling] 

// [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 application server. 
} 
// [END refresh_token] 

// [START connect_to_fcm] 
- (void)connectToFcm { 
    // Won't connect since there is no token 
    if (![[FIRInstanceID instanceID] token]) { 
     return; 
    } 

    // Disconnect previous FCM connection if it exists. 
    [[FIRMessaging messaging] disconnect]; 
    [[FIRMessaging messaging] connectWithCompletion:^(NSError * _Nullable error) { 
     if (error != nil) { 
      // NSLog(@"Unable to connect to FCM. %@", error); 
     } else { 
      [[FIRMessaging messaging] subscribeToTopic:notificationTopic]; 
      //NSLog(@"Connected to FCM."); 
     } 
    }]; 
} 
// [END connect_to_fcm] 

- (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error { 
    // NSLog(@"Unable to register for remote notifications: %@", error); 
} 

// This function is added here only for debugging purposes, and can be removed if swizzling is enabled. 
// If swizzling is disabled then this function must be implemented so that the APNs token can be paired to 
// the InstanceID token. 
- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken { 
    // NSLog(@"APNs token retrieved: %@", deviceToken); 

    // With swizzling disabled you must set the APNs token here. 
    // [[FIRInstanceID instanceID] setAPNSToken:deviceToken type:FIRInstanceIDAPNSTokenTypeSandbox]; 
    BOOL automatic = [[[NSUserDefaults standardUserDefaults] objectForKey:@"automaticLogin"] boolValue]; 
    if (!automatic) { 
     [[NSUserDefaults standardUserDefaults] setObject:@(YES) forKey:@"automaticLogin"]; 
     [self moveToInit]; 
    } 
} 

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

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

#pragma mark - Process notifications 



- (void)readNotification:(NSDictionary *)userInfo { 
    //read your notification 
} 

-(void)readLaunchWithOptions:(NSDictionary*)launchOptions{ 
    if (launchOptions[notificationKey]) { 
     [self readNotification:launchOptions[notificationKey]]; 
    } 
}