Getting Local Notifications to Show While App Is in Foreground Swift 3

Getting local notifications to show while app is in foreground Swift 3

There is a delegate method to display the notification when the app is open in iOS 10. You have to implement this in order to get the rich notifications working when the app is open.

extension ViewController: UNUserNotificationCenterDelegate {

    //for displaying notification when app is in foreground
    func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {

        //If you don't want to show notification when app is open, do something here else and make a return here. 
        //Even you you don't implement this delegate method, you will not see the notification on the specified controller. So, you have to implement this delegate and make sure the below line execute. i.e. completionHandler.

        completionHandler([.alert, .badge, .sound]) 
    }

    // For handling tap and user actions
    func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {

        switch response.actionIdentifier {
        case "action1":
            print("Action First Tapped")
        case "action2":
            print("Action Second Tapped")
        default:
            break
        }
        completionHandler()
    }

}

In order to schedule a notification in iOS 10 and providing a badge

override func viewDidLoad() {
    super.viewDidLoad()

    // set UNUserNotificationCenter delegate to self
    UNUserNotificationCenter.current().delegate = self
    scheduleNotifications()
}

func scheduleNotifications() {

    let content = UNMutableNotificationContent()
    let requestIdentifier = "rajanNotification"

    content.badge = 1
    content.title = "This is a rich notification"
    content.subtitle = "Hello there, I am Rajan Maheshwari"
    content.body = "Hello body"
    content.categoryIdentifier = "actionCategory"
    content.sound = UNNotificationSound.default

    // If you want to attach any image to show in local notification
    let url = Bundle.main.url(forResource: "notificationImage", withExtension: ".jpg")
    do {
        let attachment = try? UNNotificationAttachment(identifier: requestIdentifier, url: url!, options: nil)
        content.attachments = [attachment!]
    }      

    let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: 3.0, repeats: false)

    let request = UNNotificationRequest(identifier: requestIdentifier, content: content, trigger: trigger)
    UNUserNotificationCenter.current().add(request) { (error:Error?) in

        if error != nil {
            print(error?.localizedDescription ?? "some unknown error")
        }     
        print("Notification Register Success")
    }
}

In order to register in AppDelegate we have to write this piece of code in didFinishLaunchingWithOptions

 func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.
        registerForRichNotifications()
        return true
    }

I have defined actions also here. You may skip them

func registerForRichNotifications() {

       UNUserNotificationCenter.current().requestAuthorization(options: [.alert,.badge,.sound]) { (granted:Bool, error:Error?) in
            if error != nil {
                print(error?.localizedDescription)
            }
            if granted {
                print("Permission granted")
            } else {
                print("Permission not granted")
            }
        }

        //actions defination
        let action1 = UNNotificationAction(identifier: "action1", title: "Action First", options: [.foreground])
        let action2 = UNNotificationAction(identifier: "action2", title: "Action Second", options: [.foreground])

        let category = UNNotificationCategory(identifier: "actionCategory", actions: [action1,action2], intentIdentifiers: [], options: [])

        UNUserNotificationCenter.current().setNotificationCategories([category])

    }

If you want that your notification banner should be shown everywhere in the entire application, then you can write the delegate of UNUserNotificationDelegate in AppDelegate and make the UNUserNotificationCenter current delegate to AppDelegate

extension AppDelegate: UNUserNotificationCenterDelegate {

    func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
        print(response.notification.request.content.userInfo)
        completionHandler()
    }

    func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
        completionHandler([.alert, .badge, .sound]) 
    }
}

Check this link for more details

https://www.youtube.com/watch?v=Svul_gCtzck

Github Sample

https://github.com/kenechilearnscode/UserNotificationsTutorial

Here is the output

Get local notification when App is in foreground Swift 4 iOS 11

The notification probably also fires while you app is in foreground.

Per Default, iOS does not show any UI when a notification arrives and the target app is in the foreground. It is the applications job to display the notification contents. Using UNUserNotificationCenterDelegate you can very easily display the notification as an alert. See this post for more information.

Get push notification while App in foreground iOS

If the application is running in the foreground, iOS won't show a notification banner/alert. That's by design. But we can achieve it by using UILocalNotification as follows

• Check whether application is in active state on receiving a remote
  
  notification. If in active state fire a UILocalNotification.

  if (application.applicationState == UIApplicationStateActive ) {
  
      UILocalNotification *localNotification = [[UILocalNotification alloc] init];
      localNotification.userInfo = userInfo;
      localNotification.soundName = UILocalNotificationDefaultSoundName;
      localNotification.alertBody = message;
      localNotification.fireDate = [NSDate date];
      [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
  }
  

SWIFT:

if application.applicationState == .active {
    var localNotification = UILocalNotification()
    localNotification.userInfo = userInfo
    localNotification.soundName = UILocalNotificationDefaultSoundName
    localNotification.alertBody = message
    localNotification.fireDate = Date()
    UIApplication.shared.scheduleLocalNotification(localNotification)
}

Is there any way to get push notification while App in foreground on iOS Swift 5?

The notification banner does not show if the app is in foreground, you need to capture the notificafion in the AppDelegate, create your own custom view and handle it from there.

How to send Local notifications when app is closed (swift)?

If you go to AppDelegate there is a method called applicationWillTerminate so you just need to call your method that send locations.

func applicationWillTerminate(_ application: UIApplication) {
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.

    let viewControllerWithYourFunction = ViewControllerWithYourFunction()
    viewControllerWithYourFunction.sendLocation()
}

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