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在UIViewController之间切换的正确设计模式是什么？

[英]What is the right design pattern for switching between UIViewControllers?

原文 2012-10-30 22:40:36 8 1 ios/ ipad/ uiview/ uiviewcontroller/ ios6

I have an app which has two main controllers: A GJClientSelectionController, which is just a regular UIViewController with a view containing a scrollview, and a CGClientDetailController, which is a custom UIViewController that manages a custom tab bar and a controller for each one. 我有一个具有两个主要控制器的应用程序：一个GJClientSelectionController，它是一个常规UIViewController，带有包含滚动视图的视图；一个CGClientDetailController，它是管理每个选项卡的自定义UIViewController和一个控制器的自定义UIViewController。 I switch between the controllers as the user moves between each part of the app. 当用户在应用程序的各个部分之间移动时，我会在控制器之间切换。

The problem is, I'm not sure what the correct design pattern is. 问题是，我不确定正确的设计模式是什么。 Until iOS6, I was just setting each one as the value of the window's rootViewController property. 在iOS6之前，我只是将每个参数设置为窗口的rootViewController属性的值。 It worked well, but if the device is rotated and then I switch controllers, the newly visible controller will not have received the rotation notification and will be drawn wrong until the user rotates the device. 它运行良好，但是如果旋转设备，然后我切换控制器，则新可见的控制器将不会收到旋转通知，并且会在用户旋转设备之前被绘制为错误。 I'm also experimenting with having a regular UIViewController that I call masterController, and setting that as the rootViewController, then adding the other two controllers as childViewControllers. 我还尝试使用一个常规的UIViewController（称为masterController），并将其设置为rootViewController，然后将其他两个控制器添加为childViewControllers。 The only thing is that if I make the view for the childViewController hidden, it still misses rotation notifications. 唯一的事情是，如果我隐藏childViewController的视图，它仍然会错过旋转通知。

What's the right design pattern for moving between UIViewControllers? 在UIViewController之间移动的正确设计模式是什么？ How can I ensure that a controller and its view has the correct orientation when I switch to them? 切换到控制器及其视图时，如何确保其方向正确？