UICollectionView

Talk I did for TACOW on the basics of UICollectionView.

Transcript

1. UICollectionView
   Ash Furrow, Teehan+Lax
   

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3. 1.UICollectionView is just like UITableView
   2.UICollectionView separates layout from display
   3.UICollectionView makes complex layouts easy
   

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4. UICollectionView is just like UITableView...
   !
   Except a little different.
   

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5. UITableView
   • UITableView is one of the mainstays of iOS
   • UICollectionView will be one for iOS 7
   

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6. Dequeuing Cells
   • UICollectionView works just like newer
   UITableView APIs
   • Register a class for a cell identifier
   • Later, dequeue a cell of that class for that
   identifier
   

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7. Demo
   

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8. UICollectionViewFlowLayoutDelegate
   • UICollectionView queries its delegate for info
   • Used to layout cells
   • Just like UITableViewDelegate
   

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9. Demo
   

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10. UICollectionView separates concerns.
    !
    Layout, dequeuing, display
    

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11. UICollectionView Layouts
    • UICollectionView separates layout from
    dequeuing logic
    • UITableView encapsulates both
    • Allows us to easily customize layout of cells
    

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12. Demo
    

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13. Custom Layout Attributes
    • We can even define our own layout attributes
    

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14. Demo
    

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15. UICollectionView makes complex layouts easy...
    !
    Or at least possible.
    

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16. UICollectionViewFlowLayout
    • Flow layouts provide a lot for you
    • Always try customizing them first
    

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17. UICollectionViewLayout
    • UICollectionViewLayout is an abstract class
    • Subclass it to go Hands On™
    • Makes complex layouts easy
    

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18. Demo
    

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19. 1.UICollectionView is just like UITableView
    2.UICollectionView separates layout from display
    3.UICollectionView makes complex layouts easy
    

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21. Go buy my book
    

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22. Ash Furrow
    @ashfurrow
    Thanks!
    

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