iPhone开发人员视图交换

Question

So I'm trying to find out the best way to swap views for an iPhone game I'm making. I have a "root view controller" that has a reference to all the view controllers I want to swap between. So I add the main menu view to this root view controller - [self.view addSubview:mainMenuController.view]; - Then in the main menu view I have an instructions button. I define an IBAction in the mainMenuController to respond to the instructions button being clicked. From there, I call [self.view removeFromSuperview] which works great. It gets rid of the main menu. So next I want to add the instructions view. I figured that it would be as simple as [super.view addSubview:super.instructionsController.view], but no luck! I've thought of a few ways to get around this, but they all seem very inelegant, as I would like to keep all references to my view controllers in one place, the root view controller. Any thoughts?

Answer 1

Could you not have your main menu view controller tell the root view controller that it's closed, along with a reference to what view it should load next? I'm assuming you're not doing something akin to what UITableView does, in which case you'd likely want to use a stack.

Answer 2

Are you mixing super (an Objective-C keyword) with self.superview (an UIView property)?

At any rate it's indeed a better design to inform your main controller to switch to another view, rather than making that decision from the added subview.

Answer 3

我只是通过在每个控制器中将一个委托属性设置为根视图控制器来解决这个问题。