Page View Controllers You use a page view controller to present content in a page-by-page manner. A page view controller manages a self-contained view hierarchy. The parent view of this hierarchy is managed by the page view controller, and the child…

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…

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…

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…

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…

遇到这个警告后找了一下网络资源,基本上只说通过 [self.view.window.rootViewController presentViewController:controller animated:YEScompletion:nil]; 可以消除该警告,但是我是不满足于仅仅消除警告的,得搞清楚怎么会出现这个.于是在 stackoverflow 上看到一条回答 应该就是这个原因了,于是从头找起,由于使用了IIViewController这个作为逻辑上的根控制器,而程序实际的根控制器是模版自…

iOS Programming Autorotation, Popover Controllers, and Modal View Controllers  自动旋转,Popover 控制器,Modal view controller  1.  In this chapter, you are going to make four changes to Homepwner's behavior that will tailor the app's behavior to whatever dev…

本文转载至 http://www.xuebuyuan.com/2117943.html Presenting view controllers on detached view controllers is discouraged <UINavigationController: 0x14642710>.的解决方法: [self.view.window.rootViewControllerpresentViewController:controlleranimated:YEScompletio…