MVVM: An iOS Journey

Slides from my talk @ Beer City Code in Grand Rapids, MI June 2017

Transcript

1. MVVM: An iOS Journey Kim Arnett
 @kimberlypilbeam
2. MVVM: An iOS Journey Problem: Testing is a bear. Files continue to be massive. Hacks for testing feel terrible. Dependency injection?
3. MVVM: An iOS Journey Swift gave Obj-C programmers an appreciation for cleaner solutions. 

4. MVVM: An iOS Journey Swift gave Obj-C programmers an appreciation for cleaner solutions. 
 [[[[[you know] what] im] talking] about]
5. ARCHITECTURE
6. MVC: Model View Controller
 (recommended by Apple) Model Controller View User Action Updates Notifies Updates
7. MVVM: Model View ViewModel Model ViewModel View User Action Updates Notifies Updates
8. MVC: Model View Controller
 (recommended by Apple) Model Controller View UIView UIViewController
 • Logic • Network Calls Data Models
9. MVVM: Model View ViewModel Model ViewModel View UIViewController
 UIView Logic
 Network Calls Data Models
10. TESTING
11. Unit Testing VS UI Testing Unit Testing is for Logic & Business Requirements UI Testing* is to make sure views exist & can be navigated
 
 *Important to set Accessibility labels
12. MVVM: Model View ViewModel Model ViewModel View UIViewController
 UIView Logic
 Network Calls Data Models Unit Testing with
 Mock Data
13. MVVM: Model View ViewModel Model ViewModel View UIViewController
 UIView Logic
 Network Calls Data Models UI Testing with Mock Data
14. Implementation
15. MVVM: An iOS Journey Cleaner Code Better Performance & Less Hack-y Easier Maintainability Open for Testing
16. MVVM: An iOS Journey Kim Arnett
 @kimberlypilbeam github.com/karnett/MVVM