Notification iOs Push delivered? - ios

Question

I recently set up notifications on my application, I can send via php and no worries, everything works fine.
Since last week, I am trying to find out if a push notification is received by the phone or not..
I can know when someone clicks on it but if the person does not click on it and prefer to open the application, it does not work..
Is there not a simple function that can tell me if a notification has just been received by the application ?
In my AppDelegate.swift :
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
}
}
}
Problem : I never pass in didReceiveRemoteNotification :/
The "print here" is never displayed.
I have a mistake on this line :
Instance method
'application(application:didReceiveRemoteNotification:fetchCompletionHandler:)'
nearly matches optional requirement
'application(_:didReceiveRemoteNotification:fetchCompletionHandler:)'
of protocol 'UIApplicationDelegate'
But I do not understand :/
Do you have an idea ?
Thx for your help ^^

Answer 1

It's rather common mistake since the conversion to Swift 3 - you're using Swift 2 method.
The right signature of this method in Swift 3 is:
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any]) {
print("here?")
}