Deep Links & In-App Previews

It's important to tell Superwall when a deep link has been opened. This enables two things

Previewing paywalls on your device before going live
Deep linking to specific Campaigns

If you don't have a custom URL scheme already set up, see Adding a Custom URL Scheme.

Depending on whether your app uses a SceneDelegate, AppDelegate, or is written in SwiftUI, there are different ways to tell Superwall that a deep link has been opened.

Be sure to click the tab that corresponds to your architecture:

import Paywall

class AppDelegate: UIResponder, UIApplicationDelegate {

  // NOTE: if your app uses a SceneDelegate, this will NOT work!
  
  // Handle a deep link
  func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool {
    Paywall.handleDeepLink(url)
    return true
  }
  
}

import Paywall

class SceneDelegate: UIResponder, UIWindowSceneDelegate {
  
  // for cold launches
  func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
    if let url = connectionOptions.urlContexts.first?.url {
      Paywall.handleDeepLink(url)
    }
  }

  // for when your app is already running
  func scene(_ scene: UIScene, openURLContexts URLContexts: Set<UIOpenURLContext>) {
    if let url = URLContexts.first?.url {
      Paywall.handleDeepLink(url)
    }
  }
  
}

import Paywall

@main
struct MyApp: App {
  @UIApplicationDelegateAdaptor(AppDelegate.self) private var appDelegate
  
  var body: some Scene {
    WindowGroup {
      ContentView()
        .onOpenURL { url in
          Paywall.handleDeepLink(url) // handle your deep link
        }
    }
  }
}

Next, build and run your app on your phone.

Then, head to the Superwall Dashboard. Click on the cog icon in the top right corner, then select Settings:

With the General tab selected, type your custom URL scheme, without slashes, into the Apple URL Scheme field:

Next, open your paywall from the dashboard and click Preview. You'll see a QR code appear in a pop-up:

On your device, scan this QR code. You can do this via Apple's Camera app. This will take you to a paywall viewer within your app, where you can preview all your paywalls in different configurations.

Here's an example of the full paywall preview flow once you're up and running: