View Controller的组合应用其实很常见了,比如说Tab bar controller和Navigation view controller的组合使用,像这种一般都是Navigation view controller作为Tab bar controller的一个child view controller,对应了一个Tab bar item. 然后今天在Review 另外一组的一个产品的代码时,发现他们将Tab bar controller作为了一个普通view controller的…
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…
Resizing the View Controller’s Views A view controller owns its own view and manages the view’s contents. In the process, the view controller also manages the view’s subviews. But in most cases, the view’s frame is not set directly by the view contro…
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…
转载地址:http://blog.sina.com.cn/s/blog_6784e6ea01017jfy.html 最新更正:这个提示几乎不影响编译和运行,可以不用设置. 产生这个提示的操作:在xcode4.6中创建一个名字为appTest空工程,create一个ios-application-empty application,直接编译运行 错误提示:虽然编译通过,也能运行,但是底下有错误提示“application windows are expected to have a r…
今天在点击按钮push viewController 时,控制台报错: Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Pushing the same view controller instance more than once is not supported 网上查了以下原因, 是说过快点击可能会产生多次push的情况,在MVC里是不支持这种事件的,所以,保险起见,在可能出现…
产生这个提示的操作:在xcode4.6中创建一个名字为appTest空工程,create一个ios-application-empty application,直接编译运行 错误提示:虽然编译通过,也能运行,但是底下有错误提示“application windows are expected to have a root view controller” 原因:在较新的xcod上都会出现这种错误.在iOS5之前的版本,应用加载时,需要一个root view controller,在iOS5以下的…
Using View Controllers in the Responder Chain 响应链中使用视图控制器 View controllers are descendants of the UIResponder class and are therefore capable of handling all sorts of events. When a view does not respond to a given event, it passes that event to its…
Responding to Display-Related Notifications 响应跟显示相关的通知 When the visibility of a view controller’s view changes, the view controller calls some built-in methods to notify subclasses of the changes. You can override these methods to override how your s…
Resource Management in View Controllers 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 than that, a…
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…
