在控制台里打印controller的层级

原创于 2016-01-04 17:15:51 发布 · 1.7k 阅读

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#uiviewcontroller #控制台 #control层级

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本文详细介绍了如何在iOS开发中利用控制台输出UIViewController的层级结构，以便于理解NavigationController中的视图控制器组织关系。通过打印每个ViewController的tag和父视图控制器，开发者可以清晰地查看controller在导航栈中的位置。

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(lldb) po [UIViewController _printHierarchy]
<BaseTabBarController 0x280f600>, state: appeared, view: <UILayoutContainerView 0x3b64990>
   | <UINavigationController 0x284dc00>, state: disappeared, view: <UILayoutContainerView 0x3b31e40> not in the window
   |    | <MasterViewController 0x288a000>, state: disappeared, view: <UIView 0x3993870> not in the window
   | <UINavigationController 0x293d000>, state: disappeared, view: <UILayoutContainerView 0x3b71860> not in the window
   |    | <MessageViewController 0x3b70d90>, state: disappeared, view: <UIView 0xae475a0> not in the window
   | <UINavigationController 0x286d400>, state: disappeared, view: <UILayoutContainerView 0x3b74790> not in the window
   |    | <FarmViewController 0x3b73d90>, state: disappeared, view: <UIView 0xae2d430> not in the window
   | <UINavigationController 0x2943a00>, state: appeared, view: <UILayoutContainerView 0x3b7a810>
   |    | <PersonViewController 0x293d400>, state: disappearing, view: <UIView 0x3bf6340>
   |    | <InformationViewController 0x40eb000>, state: disappeared, view: <UIView 0xe114340> not in the window