RootViewController内有多个UIViewControllers

Question

我有一个UIViewController，里面是RootViewController，存在一个UIView，其中包含另一个UIViewController，因为结构正确吗？

Answer 1

It could be correct if your RootviewController acts like a container view controller.

check this doc on how to build that:

Creating Custom Container View Controllers

Answer 2

If you are using storyboard for your application and want to include several view controllers inside rootview controller better go for container controller which is there in Xcode itself.

If used container as a UIview controller for showing maps inside a view controller and other information related to that map was shown in the parent view controller i found it very useful and its reusable.

You can check out the below link for further information

https://developer.apple.com/library/ios/featuredarticles/ViewControllerPGforiPhoneOS/UsingViewControllersinYourApplication/UsingViewControllersinYourApplication.html