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Handling Push Notifications in iOS with Swift

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MobileSwift

Hello,
I’m working on an iOS app and I need to implement push notifications. Can someone guide me through the process of setting up push notifications in iOS using Swift? What are the necessary steps and best practices for handling notifications?

Olivia Bennett

9 months ago

1 Response

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James Sullivan

9 months ago

Hi,
To handle push notifications in iOS with Swift:

  1. Register for Notifications: Request permission from the user.
import UserNotifications

UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) { granted, error in
    if granted {
        DispatchQueue.main.async {
            UIApplication.shared.registerForRemoteNotifications()
        }
    }
}
  1. Configure AppDelegate: Handle device token registration and notification reception.
func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
    let tokenParts = deviceToken.map { data in String(format: "%02.2hhx", data) }
    let token = tokenParts.joined()
    print("Device Token: \(token)")
}

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any],
    fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
    print("Received Notification: \(userInfo)")
    completionHandler(.newData)
}
  1. Send Notifications: Use a service like Firebase Cloud Messaging (FCM) to send notifications to the device token.
  2. Handle Notification Data: Process notification data in the app.
UNUserNotificationCenter.current().delegate = self

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

This setup enables push notifications in your iOS app using Swift.

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