通知 iOs 推送已交付？

Question

我最近在我的应用程序上设置了通知，我可以通过 php 发送，不用担心，一切正常。

从上周开始，我试图找出手机是否收到推送通知..

我可以知道何时有人点击它，但如果该人没有点击它并更喜欢打开应用程序，它就不起作用..

难道没有一个简单的函数可以告诉我应用程序是否刚刚收到通知？

在我的 AppDelegate.swift 中：

import UIKit
import UserNotifications

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate {

...

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

     // Check if launched from notification
     if let notification = launchOptions?[UIApplicationLaunchOptionsKey.remoteNotification] as? [String: AnyObject] {
       //print(notification)
       window?.rootViewController?.present(ViewController(), animated: true, completion: nil)
   } 
   else{
       //print("ici ?")
       registerForRemoteNotification()
   }

return true
}

...

//Called when a notification is delivered to a foreground app.
@available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
     completionHandler([.alert, .badge, .sound])
}

//Called to let your app know which action was selected by the user for a given notification.
@available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
     completionHandler()
}

...

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject], fetchCompletionHandler completionHandler: (UIBackgroundFetchResult) -> Void) {

        **print("here ?")**

        switch((application.applicationState)){

        case UIApplicationState.inactive:
            print("Inactive")
            //Show the view with the content of the push
            completionHandler(.newData)

        case UIApplicationState.background:
            print("Background")
            //Refresh the local model
            completionHandler(.newData)

        default:
            print("Active")
            //Show an in-app banner
            completionHandler(.newData)
            break
        }
    }

}

问题：我从来没有传入 didReceiveRemoteNotification ：/ “此处打印”从不显示。

我在这一行有一个错误：

实例方法 '应用程序（应用程序：didReceiveRemoteNotification：fetchCompletionHandler :)' 几乎符合可选要求 '应用程序（_：didReceiveRemoteNotification：fetchCompletionHandler :)' 协议'UIApplicationDelegate'

但我不明白：/

你有什么想法吗？

感谢您的帮助^^

Answer 1

自从转换为 Swift 3 以来，这是相当常见的错误 - 您使用的是 Swift 2 方法。

这个方法在 Swift 3 中的正确签名是：

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any]) {
    print("here?")
}