FCM通知在iOS应用中不起作用 [英] FCM notification is not working in iOS app

问题描述

我正在将FCM通知和云消息传递集成到我的应用程序中.我遵循了Firebase文档中提到的完全相同的步骤.甚至我都尝试过FCM提供的示例代码.它只是抛出一些警告，例如:

I am integrating FCM notification and cloud messaging in my app. I have followed exactly same steps mentioned in Firebase doc. Even I have tried with sample code given by FCM. It is just throwing some warnings as:

< FIRInstanceID/WARNING>无法获取APNS令牌错误Domain = com.firebase.iid代码= 1001该操作无法完成.并且< FIRMessaging/WARNING> FIRMessaging注册尚未准备好使用身份验证凭据.

我用Appdelegate.m编写的代码是:

My code written in Appdelegate.m is:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Register for remote notifications
    if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_7_1) {
        // iOS 7.1 or earlier
        UIRemoteNotificationType allNotificationTypes =
        (UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeBadge);
        [application registerForRemoteNotificationTypes:allNotificationTypes];
    } else {
        // iOS 8 or later
        // [END_EXCLUDE]
        UIUserNotificationType allNotificationTypes =
        (UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge);
        UIUserNotificationSettings *settings =
        [UIUserNotificationSettings settingsForTypes:allNotificationTypes categories:nil];
        [[UIApplication sharedApplication] registerUserNotificationSettings:settings];
        [[UIApplication sharedApplication] registerForRemoteNotifications];
    }

    // [START configure_firebase]
    [FIRApp configure];
    // [END configure_firebase]

    // Add observer for InstanceID token refresh callback.
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(tokenRefreshNotification:)
                                                 name:kFIRInstanceIDTokenRefreshNotification object:nil];
    return YES;
}

// [START receive_message]
- (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"]);

    // Pring full message.
    NSLog(@"%@", userInfo);
}
// [END receive_message]

// [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]

推荐答案

如果您希望在应用程序在后台运行时显示通知，则似乎需要将优先级"设置为高":

It appears that you need to have the "priority" set to "high" if you want the notification to get displayed while the app is in the background:

Firebase IOS推送应用程序关闭时通知不起作用

这篇关于FCM通知在iOS应用中不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！