November 2013
Intermediate to advanced
576 pages
19h 3m
English
book
iOS Components and Frameworks: Understanding the Advanced Features of the iOS SDK
by Kyle Richter, Joe Keeley
Content preview from iOS Components and Frameworks: Understanding the Advanced Features of the iOS SDK
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Implementing the Collection View Data Source Methods
After all the objects are configured in Interface Builder, the data source methods need to be implemented for the collection view to work. Confirm that the collection view object in the storyboard has the data source set to the basic flow view controller, as shown in Figure 20.5.
Figure 20.5 Xcode storyboard: collection view data source setting.
The sample app is a gallery app that displays photos from the user’s photo library, so there is logic implemented in the viewDidLoad method that builds an array of image assets (organized as an array containing asset arrays, in which each asset array ...
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