Question

I am trying to work my way through basic iPhone programming and I have a good basic understanding of how Interface Builder works, so I decided to try my hand at doing the views programmatically. I have gone through the ViewController Apple guide and searched everywhere and I cannot seem to find a solution to my problem. This leads me to believe it is a very simple solution, but I am just really banging my head against the wall. Basically all I am trying to do is create a view that gets main window as a subview. I know that if self.view is not defined then the loadView method is supposed to be called, and everything is supposed to be set up there. Here is the current state of my code:

The delegate:

- (void)applicationDidFinishLaunching:(UIApplication *)application {         StartMenuViewController *aViewController = [[StartMenuViewController alloc] init];     self.myViewController = aViewController;     [aViewController release];      UIView *controllersView = [myViewController view];      window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];     [window setBackgroundColor:[UIColor redColor]];      [window addSubview:controllersView];     [window makeKeyAndVisible]; } 

The view controller:

- (id)init {     if (self = [super init]) {         self.title = @'Start Menu';     }     return self; }  // Implement loadView to create a view hierarchy programmatically, without using a nib. - (void)loadView {     UIView *startView = [[UIView alloc] initWithFrame:[UIScreen mainScreen].applicationFrame];     [startView setAutoresizingMask:UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleWidth];     [startView setBackgroundColor:[UIColor greenColor]];     self.view = startView;     [startView release]; } 

Thanks for the help in advance!

Answer 1

Are you sure that you’re inheriting from UIViewController and not overriding the implementation of – (UIView*)view?

EDIT: More info:

UIViewController has a special implementation of the ‘-(UIView*) view’ message so that when it’s called, the loadView method is called if the view member variable is not set. So, if you provide an implementation of ‘- (id)view’ in your subclass, (or a property named view) it will break the auto-calling of ‘- loadView’.