Join David Okun for an in-depth discussion in this video Implementing your framework delegate, part of Swift: Writing Reusable Frameworks.
- [Instructor] Let's go ahead and implement the delegate…that we've created in our framework…inside of our sample application.…Go to the ViewController inside of your sample application.…And go underneath the line…where you create your camera,…on line 16.…Type "camera.delegate = self".…At this point, if you try to build your application,…it should fail on you, because it will say,…"Cannot assign value of type 'ViewController'…"to type 'CameraControllerDelegate'".…We don't want to automatically fix this,…because we want to use an extension…to organize all the code that has to do with our delegate.…
So close this,…and scroll to the bottom of your ViewController.…Outside the declaration of your base class,…type "extension ViewController" of type…"CameraControllerDelegate".…This is where you can specify all the functions…where your ViewController must adhere…to the protocol CameraControllerDelegate.…But you'll notice that it still gives you an error.…Let's click this and read it.…"Type 'ViewController' does not conform…
Along the way, he explains the differences and nuances between writing code for an application and for a reusable framework, as well as some of the fundamentals of AVFoundation, one of the core camera frameworks in iOS. David also shows how to refactor your code, understand Swift access control, develop an interface, and handle memory leaks, so your framework is ready to share with other developers.
- Creating your first build
- Making the camera work
- Creating a framework delegate
- Adding media
- Capturing images
- Correcting orientation
- Versioning and tagging releases in Git
Skill Level Intermediate
Learning Server-Side Swift with Vaporwith Ron Buencamino1h 30m Intermediate
Learning Swift Playgrounds Application Developmentwith Steven Lipton2h 58m Intermediate
Swift 4: Protocol-Oriented Programmingwith Károly Nyisztor1h 44m Intermediate
1. Let's Make It Work
2. Let's Keep It Clean
3. Putting It All Together
4. Track It
Tagging releases in Git2m 36s
Next steps1m 47s
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