iOS Programming View Controllers 视图控制器 1.1 A view controller is an instance of a subclass of UIViewController. 一个view controller 是一个UIViewController的子类. A view controller manages a view hierarchy. 一个view controller 管理一个视图树. It is responsible for c…
iOS Programming View and View Hierarchy 视图和视图等级 1.1(1)File → New → Project.. From the iOS section, select Application, choose the Empty Application template, and click Next. 1.2 View Basics (1)A view is an instance of UIView or one of its subclasse…
Resource Management in View Controllers 视图控制器的资源管理 View controllers are an essential part of managing your app’s resources. View controllers allow you to break your app up into multiple parts and instantiate only the parts that are needed. But more t…
Creating Custom Content View Controllers 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 workl…