Deep linking in iOS Swift - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is deep linking in mobile apps?

Deep linking lets you open a specific page or content inside an app directly, like clicking a special link that takes you straight to a product or message inside the app.

beginner

Which iOS feature allows apps to respond to URLs and open specific screens?

Universal Links let iOS apps open specific screens when users tap a web link that matches the app’s domain.

intermediate

What is the role of application(_:open:options:) in deep linking?

This method in the app delegate handles incoming URLs and lets the app decide what screen to show based on the link.

intermediate

Why do you need to add URL schemes or domains in your app’s Info.plist for deep linking?

To tell iOS which links your app can open, so the system knows to launch your app instead of a browser.

intermediate

What is the difference between custom URL schemes and Universal Links?

Custom URL schemes are app-specific links like myapp://page, but can conflict with other apps. Universal Links use standard web URLs and are more secure and reliable.

What does a deep link do in an iOS app?

A Changes the app icon

B Closes the app automatically

C Opens a specific screen inside the app

D Updates the app in the App Store

Deep links open a specific screen or content inside the app directly.

Which file do you modify to register URL schemes for deep linking?

A AppDelegate.swift

B Info.plist

C Main.storyboard

D ViewController.swift

URL schemes are registered in the Info.plist file.

What method handles incoming URLs in an iOS app delegate?

A application(_:open:options:)

B viewDidLoad()

C applicationDidBecomeActive()

D applicationWillTerminate()

application(_:open:options:) handles URLs passed to the app.

Universal Links are better than custom URL schemes because:

A They use standard web URLs and avoid conflicts

B They change the app’s icon

C They only work on Android

D They require no setup

Universal Links use web URLs and are more secure and reliable.

What happens if a Universal Link is tapped but the app is not installed?

A The app installs automatically

B The app crashes

C Nothing happens

D The link opens in the web browser

Universal Links open the website if the app is not installed.

Explain how to set up deep linking in an iOS app using custom URL schemes.

Think about telling iOS your app’s special link and handling it when opened.

Describe the advantages of Universal Links over custom URL schemes for deep linking.

Consider how Universal Links behave like normal web links.