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…

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…

UIViewController生命周期 UIViewControl是IOS程序中的一个重要组成部分,扮演者一个大管家的身份,管理着程序中的众多视图,今天看看了官方文档并做了如下一些简单的记录: 何时加载view,加载的原则是什么,视图何时消失等问题,文档中讲的都很详细. Controller的view最好在需要显示时再去加载,并且在系统发出内存警告时释放比必要的view及相关的数据对象. 一.UIViewController的初始化 初始化时会根据需要调用init,initWithCoder等…

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…

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…

Assigning View Controller Class In the first tutorial, we simply create a view controller that serves as the detail view of recipe in the Storyboard editor. The view controller is assigned with the UIViewController class by default. Default View Cont…

https://developer.apple.com/library/content/featuredarticles/ViewControllerPGforiPhoneOS/index.html#//apple_ref/doc/uid/TP40007457-CH2-SW1 View controllers are the foundation of your app’s internal structure. Every app has at least one view controlle…

今天在优化app时,发现程序出现这种警告:“ Presenting view controllers on detached view controllers is discouraged <CallViewController: 0x14676e240>. ” 首先说明一下,我是在判断无网络时,要弹出一个提示框时出现的这个问题 在网上查资料时,又说是当前控制器已present一个视图,再present一个视图时,就会出现这个错误.但是在我的项目中当前页面根本就没有第二个present了,因此…

iew controllers 通常是 iOS 项目中最大的文件,并且它们包含了许多不必要的代码.所以 View controllers 中的代码几乎总是复用率最低的.我们将会看到给 view controllers 瘦身的技术,让代码变得可以复用,以及把代码移动到更合适的地方. 你可以在 Github 上获取关于这个问题的示例项目. 把 Data Source 和其他 Protocols 分离出来 把 UITableViewDataSource 的代码提取出来放到一个单独的类中,是为 view…

参考:http://www.cnblogs.com/patientAndPersist/p/3279645.html Using View Controllers in Your App Whether you are working with view controllers provided by iOS, or with custom controllers you’ve created to show your app’s content, you use a similar set o…