iOS image carousel push notifications

The UNNotificationContentExtension protocol provides the entry point for a notification content app extension, which displays a custom interface for your app’s notifications.

1. Add Notification Content Extension

In Xcode, select File > New > Target…

Choose the Notification Content Extension

Name it NotificationContentExtension

2. Add code to your app

Download PWNotificationExtension from Github and replace the PWNotificationContentExtension in your Xcode Project with the same file from Github.

3. Notification category

Add the code bellow to your AppDelegate.swift file

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {

        if #available(iOS 10.0, *) {
            let options: UNAuthorizationOptions = [.alert]
            UNUserNotificationCenter.current().requestAuthorization(options: options) { (authorized, error) in
                if authorized {
                    let categoryIdentifier = "PWNotificationCarousel"
                    let carouselNext = UNNotificationAction(identifier: "PWNotificationCarousel.next", title: "➡️ RIGHT", options: [])
                    let carouselPrevious = UNNotificationAction(identifier: "PWNotificationCarousel.previous", title: "⬅️ LEFT", options: [])
                    let carouselCategory = UNNotificationCategory(identifier: categoryIdentifier, actions: [carouselNext, carouselPrevious], intentIdentifiers: [], options: [])
                    UNUserNotificationCenter.current().setNotificationCategories([carouselCategory])
                }
            }
        }

        return true
    }

4. Send a push notification

iOS Category:

Send a push notification with APS json:

{
  "aps":{
           "category":"PWNotificationCarousel"
        }
}

Custom Data

You must list the Image URLs separated by a comma ,

{
  "images":"image1.jpg, image2.jpg, image3.jpg"
}

Once you receive the push, you will need to long press or swipe left and click “View” to expand the notification depending on the iOS version.