self.view insertSubView .... not supposed to be self.view, but what?

I have a UIViewController which shows different UIViewController sub-classes. In the main UIViewController.m, I have a sub-class called 'Home' load on app start.

Now, which the Home view loaded, I have a button which I want to use to switch to another view called 'PreGameInfo'. I'm trying to use the code below:

- (IBAction)showPreGameInfo:(id)sender {
    [self.view insertSubview:preGameInfo.view atIndex:0];
}

It doesn't work, and I know it's because the 'self.view' needs to refer to the main UIViewController rather than the self of the 'Home' view. Does anyone know how to inser开发者_JAVA百科tSubView to the main UIViewController when using a UIButton whilst in a SubView???

Thank you!

You can use a delagate. It very easy

So implement this in your information view controller;

In the InformationViewController.h

@protocol InformationViewControllerDelegate;

@interface InformationViewController : UIViewController {
    id <InformationViewControllerDelegate> delegate;
}

@property (nonatomic, assign) id <InformationViewControllerDelegate> delegate;

- (IBAction)returnBack:(id)sender;

@end

@protocol InformationViewControllerDelegate

- (void)InformationViewControllerDidFinish:(InformationViewController *)controller;

@end

in the InformationViewController.m

- (IBAction)returnBack:(id)sender {
    [self.delegate InformationViewControllerDidFinish:self];
}

And use the delegate in any view controller you need it like this :

In the HomeViewController.h

#import "InformationViewController.h"
@interface HomeViewController : UIViewController <InformationViewControllerDelegate> {

}

Write the method to change the view from Home view to Information view

- (IBAction)goToInformationView:(id)sender;

In the HomeViewController.m

- (IBAction)goToInformationView:(id)sender {
    InformationViewController *controller = [[InformationViewController alloc] initWithNibName:nil bundle:nil];
    controller.delegate = self;
// You can chose the transition you want here (they are 4 see UIModalTransitionStyle)
        controller.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
        [self presentModalViewController:controller animated:YES];
        [controller release];
    }

And the last but not least the delegate method it inform the HomeViewController when the InformationViewController had finished

- (void)InformationViewControllerDidFinish:(InformationViewController *)controller {
    [self dismissModalViewControllerAnimated:YES];
}

I hope it helps

- (IBAction)showPreGameInfo:(id)sender {
    [superview insertSubview:preGameInfo.view atIndex:0];
}

Does this code work?

[self.parentViewController.view addSubview:myView];

Just do it in the modalView:

[self presentModalViewController:preGameInfo animated:YES]

or you can do something like this...

This line will add your new view to windows rootViewControllers view

[self.view.window.rootViewController.view addSubview:preGameInfo.view];