How to show local notification when the app is foreground?

Uplift iOS Interview

"Uplift iOS Interview" is a comprehensive guide to help aspiring iOS developers soar to new heights in their careers. This book is an indispensable tool for anyone looking to crack the iOS interview and impress their future employers with their technical prowess. With in-depth coverage of Swift, AutoLayout, SwiftUI, Multithreading, Memory management so on and so forth, this book is a treasure trove of knowledge for anyone looking to uplift their iOS development career.

In order to display the notification when the app is foreground/open, you need to add a delegate method. You have to implement UNUserNotificationCenterDelegate in order to get the local notification when the app is open.

Add the following extension in AppDelegate

// Conform to UNUserNotificationCenterDelegate to show local notification in foreground
extension AppDelegate: UNUserNotificationCenterDelegate {
    func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
        completionHandler([.alert, .badge, .sound])
    }
}

Add don’t forget to add this

UNUserNotificationCenter.current().delegate = self

in application’s didFinishLaunchingWithOptions function.

 func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
        // Show local notification in foreground
        UNUserNotificationCenter.current().delegate = self
        return true
}

Get ahead of the competition and ace your next iOS interview with expert-curated resources. Check out the collection of SwiftUI and Swift interview questions and answers, behavioral interview tips, and the popular custom layout contents. Plus, go through the new section for Engineering Manager to help you excel in your career!

Join my free Newsletter 🚀

If you are using SwiftUI’s new app cycle “SwiftUI App” then the following code can help you.

class AppDelegate: NSObject, UIApplicationDelegate {
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {

        // Show local notification in foreground
        UNUserNotificationCenter.current().delegate = self
        
        return true
    }
}

// Conform to UNUserNotificationCenterDelegate to show local notification in foreground
extension AppDelegate: UNUserNotificationCenterDelegate {
    func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
        completionHandler([.alert, .badge, .sound])
    }
}

@main
struct MyTestApp: App {

    @UIApplicationDelegateAdaptor(AppDelegate.self) var appDelegate

    var body: some Scene {
        WindowGroup {
            ContentView()
        }
    }
}

Rev Up Your iOS Skills: Take a Dynamic Learning Journey
iOS Career Boost

iOS Career Boost is the ultimate learning journey to elevate your iOS development career through a dynamic blend of visual learning, handy cheat sheets, coding practice materials, and expertly curated tips and tricks


Get Ready to Shine: Mastering the iOS Interview


Enjoying the articles? Get the inside scoop by subscribing to my newsletter.

Get access to exclusive iOS development tips, tricks, and insights when you subscribe to my newsletter. You'll also receive links to new articles, app development ideas, and an interview preparation mini book. Your email address will only be used for the purpose of sending the newsletter and will not be shared with third parties or advertisers. Rest assured that we value your privacy and will not spam your inbox.


Connect with me on

Twitter and LinkedIn and don't hesitate to reach out with any questions about this post. Thank you for reading.

If you know someone who would benefit from reading this article, please share it with them.