没有收到来自FCM到iosswift 3的推送通知

I'm building an iOS app with FCM push notifications. I followed the Google Firebase docs and other tutorials, but my AppDelegate never execute the function didReceiveRemoteNotification, so when I send notification from my Firebase Console it does nothing.

我正在开发一个带有FCM推送通知的iOS应用。我遵循了谷歌Firebase文档和其他教程，但是我的AppDelegate从不执行didReceiveRemoteNotification函数，所以当我从我的Firebase控制台发送通知时，它什么都不做。

I have this, for now:

我现在有这个:

AppDelegate.swift

AppDelegate.swift

 func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

        application.registerForRemoteNotifications()            
        FIRApp.configure()
        connectToFcm()

        return true
    }

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
    token = deviceToken.map { String(format: "%02.2hhx", $0) }.joined()
    print("<-TOKEN->")
    print(token)
}

func connectToFcm() {
    FIRMessaging.messaging().connect { (error) in
        if (error != nil) {
            print("Unable to connect with FCM. \(error)")
        } else {
            print("Connected to FCM.")
        }
    }
}

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {

    // Print message ID.
    print("Message ID: \(userInfo["gcm.message_id"]!)")

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

I also installed Firebase on my CocoaPods file.
我还在我的CocoaPods文件上安装了Firebase。
I registered the App in the Firebase Console with the same Build ID.
我在Firebase控制台使用相同的构建ID注册了这个应用程序。
I have "Required Background Modes -> App downloads content in response to push notifications" in my info.plist file
我的信息中有“必要的后台模式——>应用程序下载内容以响应推送通知”。plist文件
I've created and uploaded my APNS Certificate to my settings in Firebase Console.
我已经创建并上传了我的APNS证书到我的设置在Firebase控制台。

And when I start the App, it builds succesfully, and prints my this on console:

当我启动这个应用时，它成功地构建了我的这个，并在控制台打印出来:

[Firebase/Analytics][I-ACS023012] Firebase Analytics enabled
2017-05-29 12:10:56.101 incidenciasSifu[1811] <Notice> [Firebase/Analytics][I-ACS023012] Firebase Analytics enabled
Optional(Error Domain=com.google.fcm Code=2001 "FIRMessaging is already connected" UserInfo={NSLocalizedFailureReason=FIRMessaging is already connected})
<-TOKEN->
Optional("03545fbbb986e2ffdfa50ac9e3eb6fe07e6fe4694cdfd000d673a0bf5ea53f6a")
Connected to FCM.

I'm newbie on Swift, and I don't know if I forgot to add some code in AppDelegate or something.

我是Swift的新手，我不知道我是否忘记在AppDelegate中添加了一些代码。

Help please! I spent too much hour on this :(

请帮助!我在这上面花了太多的时间

2 个解决方案

#1

Before registering for push notifications you need to ask user's to grant you necessary privileges. Try this code in your didFinishLaunchingWithOptions method:

在注册推送通知之前，您需要请求用户授予您必要的权限。在didFinishLaunchingWithOptions方法中尝试以下代码:

if #available(iOS 10.0, *) {
    UNUserNotificationCenter.current().requestAuthorization(options: [.badge, .alert, .sound]) { (granted, error) in
        if granted {
            application.registerForRemoteNotifications()
        }
    }
} else {
    let notificationTypes: UIUserNotificationType = [.alert, .badge, .sound]
    let settings = UIUserNotificationSettings(types: notificationTypes, categories: nil)
    application.registerUserNotificationSettings(settings)
    application.registerForRemoteNotifications()
}

Also it would be useful to check the reason of app start. Add the following code in this method:

检查app start的原因也是很有用的。在此方法中添加以下代码:

if let remoteNotification = launchOptions?[UIApplicationLaunchOptionsKey.remoteNotification] {
    self.application(application, didReceiveRemoteNotification: remoteNotification as! [AnyHashable : Any])
}

Additionally you may add didFailToRegisterForRemoteNotificationsWithError method to understand the reason of possible error:

此外，您可以添加didFailToRegisterForRemoteNotificationsWithError方法来了解可能出现错误的原因:

func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
    print ("Eror: \(error.localizedDescription)")
}

#2

You need to register notification in appdelegate's didFinishLaunchingWithOptions.

您需要在appdelegate的didFinishLaunchingWithOptions中注册通知。

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {


        let center = UNUserNotificationCenter.current()
        center.requestAuthorization(options:[.badge, .alert, .sound]) { (granted, error) in
            //  actions based on whether notifications were authorized or not
        }
        application.registerForRemoteNotifications()
        return true
    }

#1