Split View Controller
UISplitViewController is very simple, defining only three public properties and no public methods. Even the delegate protocol has only four methods. The power is in how split view controller manages two other view controllers: one for a master or menu view, and another for the detail.
Figure 11-1 shows these three controllers in the iPad Mail app. The split view controller, outlined in green, is the app window root view. Inside are the master view controller on the left outlined in red and the detail view controller on the right in blue.
Figure 11-1 Split view controller
Figure 11-2 shows the same controller in portrait. ...
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