Why I did not receive any notification on my iPhone? - ios

Question

Running this on Xcode8.3 with swift 3.1
Below is my code in AppDelegate.swift
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
let center = UNUserNotificationCenter.current()
center.requestAuthorization(options: [.alert, .sound, .badge], completionHandler: { granted, error in
if granted {
print("OK!")
}
else {
print("No!")
}
})
application.registerForRemoteNotifications()
return true
}
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: #escaping (UIBackgroundFetchResult) -> Void) {
print("==== didReceiveRemoteNotification ====")
print(userInfo)
}
I use node-apns to push notification to my app and I can have message from my Debug area in Xcode.
==== didReceiveRemoteNotification ====
[AnyHashable("id"): 123, AnyHashable("aps"): {
alert = "Hello World \U270c";
badge = 3;
}]
But, I did not receive any notification on my iPhone.
Did I missing something?

Answer 1

With iOS 10, you can do the following to see push notifications when the App is in Foreground. You have to implement the below function in AppDelegate. It's a delegate method of UNUserNotificationCenterDelegate.
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: #escaping (UNNotificationPresentationOptions) -> Void)
Follow the below steps:
Import UserNotifications and extend UNUserNotificationCenterDelegate in AppDelegate.
Set up the UNUserNotificationCenter delegate in didFinishLaunchingWithOptions.
let center = UNUserNotificationCenter.current()center.delegate = self
Implement the will present method in AppDelegate and call the completion handler with the options.
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: #escaping (UNNotificationPresentationOptions) -> Void) {
completionHandler([.alert,.badge,.sound])
}
Now if you get a push, you can see the notification alert even if your app is in foreground. More Info in Apple Doc.

Answer 2

if you want to handle notifications, when your app is active, you should do something like this, because the push view won't appear
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any]) {
if application.applicationState == .active {
//create custom view or something
} else {
//it was background/off
}
}
you might be also interested in creating new build schema, so your app will wait until it would be launched, so you can debug your app behaviour when receiving push.