Unburdened ViewControllers by Jay Thrash

Jay discusses an alternative to MVC that can help in creating less cluttered view controllers from CocoaHeads August in Raleigh

Transcript

1. Unburdened ViewControllers Triangle CocoaHeads - Aug 2012 Jay Thrash :: jay.thrash@mac.com :: @jaythrash
2. In the Beginning.. View Controller View Model Model View
3. Quickly becomes...
4. Quickly becomes... SOAP REST Core Data
5. Beginning of the End ViewController View Model Model View SOAP REST Core Data
7. Open a Store
8. iOS Programming Big Nerd Ranch Guide
9. Store-Controllers CMMotionManager CLLocationManager
10. Model View Controller Store
11. MVC(S) Controller Model External Data Store View Controller Model View
12. Store Interface #import <Foundation/Foundation.h> @class CHItem; @interface CHItemStore : NSObject { NSMutableArray *items; } // Access the singleton Store + (CHItemStore *)store; // Access Store contents - (NSArray *)allItems; - (void)addItem:(CHItem *)item; - (void)removeItem:(CHItem *)item; // Persist Store contents - (BOOL)save:(NSError *)err; @end
13. Store Responsibilities • Model Objects from Data Sources • Handles Loading & Saving of Model Objects • Encapsulates Caching and Lazy Fetching
14. Before & After Store Controller Fetches Models Controls Flow Persists Models Get, Update, Insert using Store Encapsulates Saving Requests Saving Caches Data Not concerned with data caching
15. Extra Credit • Asynchronous Data Requests • Memory Management • Caching • Lazy Loading
16. Change Your View
17. Third Wheel Controller View Model View External Data Store Model
18. Frictionless Controller View Model View External Data Store Model
19. Benefits • Reusable Views - Just add a Model • ViewController as Conductor • Interface with Store • Handle User’s Input
20. Name Author URL iOS Programming Joe Conway and Aaron Hillegass http://www.bignerdranch.com Ubuntu Font Family Canonical, Ltd. http://font.ubuntu.com/ Unburdened ViewControllers Jay Thrash :: jay.thrash@mac.com :: @jaythrash Resources & Attributions