How to programmatically start / get rid of views for iPhone?

Question

I do not use the tab bar or any other control - I want to basically change the current view to another view controller dynamically (i.e. through code). I don't use Interface Builder at all ...

For example, suppose we create three view controllers:

(this may not be the best example, but I'm trying to make it simplified)

View_Hello.m (and .h)

View_Goodbye.m (and .h)

View_Ciao.m (and .h)

Our ViewerAppDelegate will launch View01_Hello.

View_Hello will have a custom touch method, which would then have to go to View_Ciao if it was skipped, but View_Goodbye if it just touched.

Any ideas on how I can do this (and please don’t say “oh, you need to use the xxx interface element for this example.” I need to be able to randomly change the views based on program control in the view of the application over which I I work)

I surf through Google and StackOverflow last week and went through my three O'Reilly Cocoa books (plus three books for the iPhone developers), and they all just use simple interfaces, but nothing shows an example like what I'm trying to do.

============

Edit (grant @Andrew):

eg:

View_Ciao *viewCiao; 
-(void) viewDidLoad { 
  viewCiao = [[View_Ciao alloc] initWithNibName:@"View_Ciao" bundle:nil];
  [viewCiao.view setNeedsDisplay];
  [super viewDidLoad];
}

Failure. :-)

==============

Edit (@ Daniel Dickison)

Brilliant - it worked!

- (void)applicationDidFinishLaunching:(UIApplication *)application {    

    [window addSubview:viewController.view];
    [window makeKeyAndVisible];

    // create the second view, remove the first, and then display the second

    viewCiao = [[ViewCiao alloc] init];
    [viewController.view removeFromSuperview];   
    [window addSubview:viewCiao.view];
}

Answer 1

- :

@interface AppDelegate : ...
{
    View_Hello *hello;
    View_Goodbye *goodbye;
    View_Ciao *ciao;
    UIViewController *currentView;
    UIWindow *window;
}
... IBOutlet properties for the 3 controllers.
@end

@implementation AppDelegate
- (void)switchToGoodbye
{
    [currentView.view removeFromSuperview];
    [window addSubview:goodbye.view];
    currentView = goodbye;
}
... etc.
@end

viewWillDisappear:, viewDidDisappear:, viewWillAppear: viewDidAppear: currentView /.

Answer 2

2-8 "Swiping Views" Erica Sadun iPhone Cookbook ? touchhesBegan touchsMoved , touchEnded.

, , , . , 69 , . (mov) .

Answer 3

Download the appropriate view and add it as a sub-parent, then remove the existing view from its parent.

If you have only one level of views, your window is the parent.