问题描述

我很难显示我从 FCM 通知控制台发送到我的设备的推送通知.我可以看到设备正在接收通知，因为我可以看到我发送的消息test8"

I am struggling to display my push notifications that I am sending to my device from the FCM notification console. I can see the device is receiving the notification because I can see the message I send "test8"

Connected to FCM.
%@ [AnyHashable("notification"): {
    body = test8;
    e = 1;
},

但不管我的应用是在前台还是后台，我都不会显示通知.

But it does not matter if my app is in the foreground or background I don't get the notification displayed.

我在 info.plist 中添加了必需的后台模式 - 应用下载内容以响应推送通知".我的证书是正确的，生成令牌没有问题.我的应用正在接收通知，但只是不显示它们.

I have added "Required background modes - App downloads content in response to push notifications" to the info.plist. My certificates are correct and I have no issue generating a token. My app is receiving the notifications but just not displaying them.

import UIKit
import UserNotifications
import Firebase
import FirebaseInstanceID
import FirebaseMessaging

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?

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

        // [START register_for_notifications]
        if #available(iOS 10.0, *) {
            let authOptions : UNAuthorizationOptions = [.Alert, .Badge, .Sound]
            UNUserNotificationCenter.currentNotificationCenter().requestAuthorizationWithOptions(
                authOptions,
                completionHandler: {_,_ in })

            // For iOS 10 display notification (sent via APNS)
            UNUserNotificationCenter.currentNotificationCenter().delegate = self
            // For iOS 10 data message (sent via FCM)
            FIRMessaging.messaging().remoteMessageDelegate = self

        } else {
            let settings: UIUserNotificationSettings =
                UIUserNotificationSettings(forTypes: [.Alert, .Badge, .Sound], categories: nil)
            application.registerUserNotificationSettings(settings)
            application.registerForRemoteNotifications()
        }

        application.registerForRemoteNotifications()

        // [END register_for_notifications]

        FIRApp.configure()

        // Add observer for InstanceID token refresh callback.
        NSNotificationCenter.defaultCenter().addObserver(self,
                                                         selector: #selector(self.tokenRefreshNotification),
                                                         name: kFIRInstanceIDTokenRefreshNotification,
                                                         object: nil)

        return true
    }

    // [START receive_message]
    func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject],
                     fetchCompletionHandler completionHandler: (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: NSNotification) {
        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()
    }
    // [END refresh_token]

    // [START connect_to_fcm]
    func connectToFcm() {
        FIRMessaging.messaging().connectWithCompletion { (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()
        print("Disconnected from FCM.")
    }
    // [END disconnect_from_fcm]
}

// [START ios_10_message_handling]
@available(iOS 10, *)
extension AppDelegate : UNUserNotificationCenterDelegate {

    // Receive displayed notifications for iOS 10 devices.
    func userNotificationCenter(center: UNUserNotificationCenter,
                                willPresentNotification notification: UNNotification,
                                withCompletionHandler completionHandler: (UNNotificationPresentationOptions) -> Void) {
        let userInfo = notification.request.content.userInfo
        // Print message ID.
        print("Message ID: (userInfo["gcm.message_id"]!)")
        // Print full message.
        print("%@", userInfo)
    }
}

extension AppDelegate : FIRMessagingDelegate {
    // Receive data message on iOS 10 devices.
    func applicationReceivedRemoteMessage(remoteMessage: FIRMessagingRemoteMessage) {
        print("%@", remoteMessage.appData)
    }
}
// [END ios_10_message_handling]

我一直在尝试自己研究和解决这个问题，但我遇到了问题.任何帮助或建议将不胜感激.

I having been trying to research and solve this issue on my own but I am having issues. Any help or suggestions would be greatly appreciated.

推荐答案

在didRegisterForRemoteNotificationsWithDeviceToken方法内部，添加如下代码:

Inside method didRegisterForRemoteNotificationsWithDeviceToken, add the following code:

func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {
    let tokenChars = UnsafePointer<CChar>(deviceToken.bytes)
    var tokenString = ""

    for i in 0..<deviceToken.length {
        tokenString += String(format: "%02.2hhx", arguments: [tokenChars[i]])
    }

    FIRInstanceID.instanceID().setAPNSToken(deviceToken, type: FIRInstanceIDAPNSTokenType.Unknown)

    print("tokenString: (tokenString)")
}

别忘了在Capabilities中启用Push Notifications.

这篇关于ios10、Swift 3 和 Firebase 推送通知 (FCM)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编程学习网！