Firebase |远程通知没有显示，swift 3.0

Question

我遇到Firebase Remote通知未显示的问题。我的通知已在Target中启用 - ＆gt;功能和Firebase也已安装。在Firebase网站上，当我尝试发送通知时，它会立即关闭。收到0台设备。

那是我的代码：

    import UIKit
    import UserNotifications

    import Siren

    import Firebase
    import FirebaseDatabase
    import FirebaseInstanceID
    import FirebaseMessaging

    @UIApplicationMain
    class AppDelegate: UIResponder, UIApplicationDelegate {

        var window: UIWindow?

        override init() {
            super.init()
            FIRApp.configure()
            FIRDatabase.database().persistenceEnabled = true
        }

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

    //
    let notificationSettings = UIUserNotificationSettings(types: [.badge, .alert, .sound], categories: nil)

    UIApplication.shared.registerUserNotificationSettings(notificationSettings)

    application.registerForRemoteNotifications()
    application.registerUserNotificationSettings(notificationSettings)


    return true
}

这就是Firebase中显示的内容：

如果您需要任何其他信息，请询问。

感谢您的帮助。

更新（我添加了一些代码）：

的appDelegate：

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any],
                     fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
        // 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.
        print("Message ID: \(userInfo["gcm.message_id"]!)")
        // Print full message.
        print("%@", userInfo)
    }
    // [END receive_message]
    // [START refresh_token]
    func tokenRefreshNotification(_ notification: Notification) {
        if let refreshedToken = FIRInstanceID.instanceID().token() {
            print("InstanceID token: \(refreshedToken)")
        }
        // Connect to FCM since connection may have failed when attempted before having a token.
        connectToFcm()
    }

didFinishLaunchingWithOptions：

// Add observer for InstanceID token refresh callback.
        NotificationCenter.default.addObserver(self,
                                               selector: #selector(self.tokenRefreshNotification),
                                               name: .firInstanceIDTokenRefresh,
                                               object: nil)

其他代码：

// [START connect_to_fcm]
    func connectToFcm() {
        FIRMessaging.messaging().connect { (error) in
            if (error != nil) {
                print("Unable to connect with FCM. \(error)")
            } else {
                print("Connected to FCM.")
            }
        }
    }
    // [END connect_to_fcm]
    func applicationDidBecomeActive(_ application: UIApplication) {
        connectToFcm()
    }
// [START disconnect_from_fcm]
func applicationDidEnterBackground(_ application: UIApplication) {
    FIRMessaging.messaging().disconnect()

Answer 1

我遇到了同样的问题，在我的情况下，解决方案是从FirebaseAppDelegateProxyEnabled文件中删除info.plist行。但是，我也没有看到您使用的是didReceiveRemoteNotification和观察者。

也将此添加到您的appDelegate：

中

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any],
                     fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
        // 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.
        print("Message ID: \(userInfo["gcm.message_id"]!)")
        // Print full message.
        print("%@", userInfo)
    }
    // [END receive_message]
    // [START refresh_token]
    func tokenRefreshNotification(_ notification: Notification) {
        if let refreshedToken = FIRInstanceID.instanceID().token() {
            print("InstanceID token: \(refreshedToken)")
        }
        // Connect to FCM since connection may have failed when attempted before having a token.
        connectToFcm()
    }

我也没有在didFinishLaunchingWithOptions中看到观察者：

// Add observer for InstanceID token refresh callback.
        NotificationCenter.default.addObserver(self,
                                               selector: #selector(self.tokenRefreshNotification),
                                               name: .firInstanceIDTokenRefresh,
                                               object: nil)

您是否也可以对此进行测试，以便了解用户是否已连接到云端消息：

// [START connect_to_fcm]
    func connectToFcm() {
        FIRMessaging.messaging().connect { (error) in
            if (error != nil) {
                print("Unable to connect with FCM. \(error)")
            } else {
                print("Connected to FCM.")
            }
        }
    }
    // [END connect_to_fcm]
    func applicationDidBecomeActive(_ application: UIApplication) {
        connectToFcm()
    }
// [START disconnect_from_fcm]
func applicationDidEnterBackground(_ application: UIApplication) {
    FIRMessaging.messaging().disconnect()

此外，您可以在发送通知后说出Firebase控制台中的状态。