Skip navigation

Protocol injection

Protocol injection: iOS App Development: Design Patterns for Mobile Architecture
Protocol injection: iOS App Development: Design Patterns for Mobile Architecture

In order to completely decouple your layers from concrete implementations, you need to make protocols that provide an abstract interface. This allows you to swap out different classes that conform to these protocols. This can be useful when you want to test a single class, and don't care about the dependencies. You can mock up a fake class the gives you data in the way you expect and then you can test how your class deals with the result. Faking the layers can be useful too when you are developing a new feature, but don't have the actual data pieces in place yet. With interfaces, you can make a fake class that returns the data you need to work with.

Resume Transcript Auto-Scroll
Author
Skill Level Intermediate
1h 52m
Duration
5,701
Views
Show More Show Less
Skills covered in this course
Developer Mobile Apps Mac OS iOS

Continue Assessment

You started this assessment previously and didn't complete it. You can pick up where you left off, or start over.

Start Your Free Trial Now

Start your free trial now, and begin learning software, business and creative skills—anytime, anywhere—with video instruction from recognized industry experts.

Start Your Free Trial Now