为什么重新安装我的 iOS 应用后 Firebase Messaging 无法正常工作？

Question

我刚刚正确实现了 Firebase，它运行良好，直到我卸载应用程序并从 Xcode 再次运行。从那时起，它不会收到任何 Firebase 通知，无论是后台还是前台。怎么可能？所有的证书似乎都可以。这是我的 AppDelegate.m：

@import Firebase;
@import FirebaseInstanceID;
@import FirebaseMessaging;

@interface AppDelegate ()

@end

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.

    UIPageControl *pageControl = [UIPageControl appearance];
    pageControl.pageIndicatorTintColor = [UIColor lightGrayColor];
    pageControl.currentPageIndicatorTintColor = [UIColor blackColor];
    pageControl.backgroundColor = [UIColor whiteColor];

    // Use Firebase library to configure APIs
    [FIRApp configure];

    // Managing notifications:

    if(SYSTEM_VERSION_GRATERTHAN_OR_EQUALTO(@"10.0")){
        UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
        center.delegate = self;
        [center requestAuthorizationWithOptions:(UNAuthorizationOptionSound | UNAuthorizationOptionAlert | UNAuthorizationOptionBadge) completionHandler:^(BOOL granted, NSError * _Nullable error){
             if(!error){
                 [self registerForNotification];
             }
         }];

    } else {
        if ([application respondsToSelector:@selector(isRegisteredForRemoteNotifications)]){

            // iOS 8 Notifications:

            [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]];

            [application registerForRemoteNotifications];

            [self registerForNotification];

        } else {

            // iOS < 8 Notifications

            [application registerForRemoteNotificationTypes:
             (UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound)];
        }
    }

    return YES;
}

- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken{    
    NSString * deviceTokenString = [[[[deviceToken description]
        stringByReplacingOccurrencesOfString: @"<" withString: @""] 
        stringByReplacingOccurrencesOfString: @">" withString: @""] 
        stringByReplacingOccurrencesOfString: @" " withString: @""];

    NSLog(@"The generated device token string is : %@",deviceTokenString);
}

- (void)application:(UIApplication*)application didFailToRegisterForRemoteNotificationsWithError:(NSError*)error{
    NSLog(@"Failed to get token, error: %@", error.description);
}


// To receive notifications for iOS 9 and below.
- (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

  // Print message ID.
  NSLog(@"Message ID: %@", userInfo[@"gcm.message_id"]);

  // Print full message.
  NSLog(@"%@", userInfo);
}

- (void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings {
    [application registerForRemoteNotifications];
}

- (void)registerForNotification {
    UIApplication *application = [UIApplication sharedApplication];

    // iOs 8 or greater:

    if ([application respondsToSelector:@selector(registerUserNotificationSettings:)]) {

        UIMutableUserNotificationAction *open;
        open = [[UIMutableUserNotificationAction alloc] init];
        [open setActivationMode:UIUserNotificationActivationModeBackground];
        [open setTitle:NSLocalizedString(@"View", nil)];
        [open setIdentifier:NotificationActionOpenView];
        [open setDestructive:NO];
        [open setAuthenticationRequired:NO];

        UIMutableUserNotificationCategory *actionCategory;
        actionCategory = [[UIMutableUserNotificationCategory alloc] init];
        [actionCategory setIdentifier:NotificationCategoryOpenView];
        [actionCategory setActions:@[open] 
                        forContext:UIUserNotificationActionContextDefault];

        NSSet *categories = [NSSet setWithObject:actionCategory];
        UIUserNotificationType types = (UIUserNotificationTypeAlert|
                                        UIUserNotificationTypeSound|
                                        UIUserNotificationTypeBadge);

        UIUserNotificationSettings *settings;
        settings = [UIUserNotificationSettings settingsForTypes:types
                                                     categories:categories];

        [[UIApplication sharedApplication] registerUserNotificationSettings:settings];
    } else if ([application respondsToSelector:@selector(registerForRemoteNotificationTypes:)]) { 
        // iOs 7 or lesser:

        UIRemoteNotificationType myTypes = UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound;
        [application registerForRemoteNotificationTypes:myTypes];
    }

}

谢谢！

Answer 1

代码很好，没有错误。这似乎是与谷歌服务器或其他东西的同步问题。它发生在我身上，它在安装应用程序 1 小时后开始工作。

等一下 :)

Answer 2

以防万一可以使某人受益，缺少的部分是：

      - (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {

    // for development 
        [[FIRInstanceID instanceID] setAPNSToken:deviceToken type:FIRInstanceIDAPNSTokenTypeSandbox];

    // for production 
   //     [[FIRInstanceID instanceID] setAPNSToken:deviceToken type:FIRInstanceIDAPNSTokenTypeProd];

}