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
   

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2. In the Beginning..
   View
   Controller
   View
   Model
   Model View
   

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3. Quickly
   becomes...
   

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4. Quickly
   becomes...
   SOAP
   REST
   Core
   Data
   

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5. Beginning of the End
   ViewController
   View
   Model
   Model View
   SOAP
   REST
   Core
   Data
   

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7. Open a Store
   

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8. iOS Programming
   Big Nerd Ranch Guide
   

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9. Store-Controllers
   CMMotionManager CLLocationManager
   

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10. Model
    View
    Controller
    Store
    

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11. MVC(S)
    Controller
    Model
    External
    Data
    Store
    View
    Controller
    Model
    View
    

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12. Store Interface
    #import
    @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
    

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13. Store Responsibilities
    • Model Objects from Data Sources
    • Handles Loading & Saving of Model
    Objects
    • Encapsulates Caching and Lazy
    Fetching
    

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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
    

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15. Extra Credit
    • Asynchronous Data Requests
    • Memory Management
    • Caching
    • Lazy Loading
    

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16. Change Your
    View
    

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17. Third Wheel
    Controller
    View
    Model View
    External
    Data
    Store
    Model
    

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18. Frictionless
    Controller
    View
    Model
    View
    External
    Data
    Store
    Model
    

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19. Benefits
    • Reusable Views - Just add a Model
    • ViewController as Conductor
    • Interface with Store
    • Handle User’s Input
    

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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
    

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