How to handle ios push notifications when an application is in the foreground?

Question

How to configure the AppDelegate app to handle push notifications that occur when the app is in the foreground and in the background with fast 3 and ios 10? Including how to make the phone vibrate in the foreground if I receive a notification.

Answer 1

Here is how I configured the AppDelegate file for this:

To handle push notifications, import the following structure:

import UserNotifications 

To make the phone vibrate on any device, import the following structure:

 import AudioToolbox 

Make your AppDelegate UNUserNotificationCenterDelegate:

 @UIApplicationMain class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate { 

In your "didFinishLaunchingWithOptions" add this:

  UNUserNotificationCenter.current().delegate = self UNUserNotificationCenter.current().requestAuthorization(options: [.badge, .sound, .alert], completionHandler: {(granted, error) in if (granted) { UIApplication.shared.registerForRemoteNotifications() } else{ print("Notification permissions not granted") } }) 

This will determine if the user previously said that your application can send notifications. If not, process it as you like.

To access the device token after registration:

 //Completed registering for notifications. Store the device token to be saved later func application( _ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data ) { self.deviceTokenString = deviceToken.hexString } 

hexString is an extension added to my project:

 extension Data { var hexString: String { return map { String(format: "%02.2hhx", arguments: [$0]) }.joined() } } 

To deal with what happens when your application receives a notification in the foreground:

 //Called when a notification is delivered to a foreground app. func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) { //Handle the notification //This will get the text sent in your notification let body = notification.request.content.body //This works for iphone 7 and above using haptic feedback let feedbackGenerator = UINotificationFeedbackGenerator() feedbackGenerator.notificationOccurred(.success) //This works for all devices. Choose one or the other. AudioServicesPlayAlertSoundWithCompletion(SystemSoundID(kSystemSoundID_Vibrate), nil) } 

To deal with what happens when your application receives a notification in the background, after which the user clicks on the notification:

 //Called when a notification is delivered to a background app. func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) { //Handle the notification print("did receive") let body = response.notification.request.content.body completionHandler() }