March 2014
Intermediate to advanced
672 pages
40h 11m
English
Content preview from The Core iOS Developer’s Cookbook, Fifth Edition
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View Controllers
As their name suggests, view controllers provide the controller component of iOS’s Model–View–Controller design pattern. Each view controller manages a set of views that comprise a single user-interface component within an application. View controllers coordinate view loading and appearance as well as participate in responding to user interactions.
View controllers also harmonize with the device and underlying operating system. When a user rotates the device, for example, the view controller may update its views’ layout. When the OS encounters a low-memory scenario, controllers respond to memory warnings.
In short, view controllers provide central management. They negotiate with a range of orthogonal development requirements ...
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