iPhone-如何保存视图控制器对象本身？
我想保存视图控制器的状态。我搜索了一下，发现应该通过保存状态变量来保存状态。
但我对保存视图控制器对象本身感兴趣。有什么方法可以保存视图控制器对象本身，以便当我重新启动应用程序时，我也可以看到与关闭应用程序之前相同的视图状态。否则我必须自己达到这种状态，这将无法完全解决目的，因为（显示的 admob 广告）之类的东西无法恢复。
如果我在某些地方错了或者错过了什么，请指导我。
I want to save the state of my view controller. I searched and found that I should save the state by saving state variables.
But I am interested in saving the view controller object itself. Is there any way to save the view controller object itself so that when I restart the application I see the same view state too on which I was before closing the app. Otherwise I have to reach that state myself and that will not solve the purpose fully as somethings like (the admob ad which was displayed) could not be restored.
If I am wrong at some place or miss something please guide me.
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考虑在您想要保留的所有类中实现 NSCoding。如果您正确地实现了这一点，然后在应用程序终止和启动时使用 NSKeyedArchiver/NSKeyedUnarchiver 之类的东西在根节点（例如选项卡栏控制器或导航栏控制器）对对象图进行编码，您可以保存和恢复对象的状态轻松查看控制器。 UIViewController和UIView默认实现它，所以你需要做的就是重写encodeWithCoder:和decodeWithCoder:方法，调用super，并保存你需要的状态变量。
Look into implementing NSCoding in all the classes you want to persist. If you properly implement that and then encode your object graph at a root node (like a tab bar controller or a nav bar controller) with something like NSKeyedArchiver/NSKeyedUnarchiver when your app terminates and starts up, you can save and restore the state of a view controller easily. UIViewController and UIView implement it by default, so all you need to do is override the encodeWithCoder: and decodeWithCoder: methods, call super, and save the state variables you need.