我正在使用Firebase作为我的后端，我正在使用云消息传递进行推送通知，但我的应用仅在应用程序打开时才会收到通知（并且推送通知会执行应用程序打开时不显示）。我查看了Firebase文档和其他代码示例，我找不到任何具体的我遗漏的东西，并且我在应用程序打开时收到正确的输出。问题是，当应用程序外部没有通知时，根本没有通知横幅显示，只有xcode控制台输出。这是我的代码：
import UIKit
import Firebase
import UserNotifications
import FirebaseMessaging
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
override init() {
FIRApp.configure() //this is the changed version.
if let token = FIRInstanceID.instanceID().token(){
print("Target Token ID: \(token)")
}
let token = FIRInstanceID.instanceID().token()!
print("TOKEN:\(token)")
}
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
//FIRApp.configure()
if #available(iOS 10.0, *) {
let authOptions : UNAuthorizationOptions = [.alert, .badge, .sound]
UNUserNotificationCenter.current().requestAuthorization(
options: authOptions,
completionHandler: {_,_ in })
// For iOS 10 display notification (sent via APNS)
UNUserNotificationCenter.current().delegate = self
// For iOS 10 data message (sent via FCM)
FIRMessaging.messaging().remoteMessageDelegate = self
} else {
let settings: UIUserNotificationSettings =
UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
application.registerUserNotificationSettings(settings)
}
// Add observer for InstanceID token refresh callback.
NotificationCenter.default.addObserver(self,
selector: #selector(self.tokenRefreshNotification),
name: .firInstanceIDTokenRefresh,
object: nil)
application.registerForRemoteNotifications()
return true
}
func applicationWillResignActive(_ application: UIApplication) {
// Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quit4rRs the application and it begins the transition to the background state.
// Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}
func applicationDidEnterBackground(_ application: UIApplication) {
// Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
// If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
//* FIRMessaging.messaging().disconnect()
//* print("Disconnected from FCM.")
}
func applicationWillEnterForeground(_ application: UIApplication) {
// Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
}
func applicationDidBecomeActive(_ application: UIApplication) {
// Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
FIRMessaging.messaging().disconnect()
connectToFcm()
}
func applicationWillTerminate(_ application: UIApplication) {
// Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}
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("QQWQW")
// Print message ID.
print("Message ID: \(userInfo["gcm.message_id"]!)")
// Print full message.
print(userInfo)
}
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()
}
func connectToFcm() {
FIRMessaging.messaging().connect { (error) in
if (error != nil) {
print("Unable to connect with FCM. \(error!)")
} else {
print("Connected to FCM.")
}
}
}
}
@available(iOS 10, *)
extension AppDelegate : UNUserNotificationCenterDelegate {
// Receive displayed notifications for iOS 10 devices.
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (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)
print("QQQQQ")
}
}
这是收到消息时的输出：
%@ [AnyHashable("notification"): {
body = myMSG;
e = 1;
}, AnyHashable("from"): 492525072004, AnyHashable("collapse_key"): com.myApp]
QQQQQ
同样，在应用内部显示输出仅，这会使推送通知失败。我认为也没有显示任何横幅，因为在应用程序内部时，应用程序的推送通知不会显示。