On the iPhone or iPod touch, a modal view controller takes over the entire screen. This is the defaultbehavior and the only possibility on these devices. On the iPad, you have two additional options: aform sheet style and a page sheet style. You can…
View Controller Basics 视图控制器基础 Apps running on iOS–based devices have a limited amount of screen space for displaying content and therefore must be creative in how they present information to the user. Apps that have lots of information to display…
Creating Custom Content View Controllers 创建自定义内容视图控制器 Custom content view controllers are the heart of your app. You use them to present your app’s unique content. All apps need at least one custom content view controller. Complex apps divide the wor…
View Controller Basics Apps running on iOS–based devices have a limited amount of screen space for displaying content and therefore must be creative in how they present information to the user. Apps that have lots of information to display must there…
About View Controllers View controllers are a vital link between an app’s data and its visual appearance. Whenever an iOS app displays a user interface, the displayed content is managed by a view controller or a group of view controllers coordinating…
Parent-child relationshipsParent-child relationships are formed when using view controller containers. Examples of viewcontroller containers are UINavigationController, UITabBarController, and UISplitViewController. You can identify a view controller…
