Creating UIViews programmatically

If you want to create a new UIViewController object without using a Nib file in Interface Builder, you must use the loadView method. It's rather simple, but key to doing things programmatically.

- (void)loadView {
 CGRect viewFrame;
 viewFrame = CGRectMake(0, 0, MASTER_WIDTH, MASTER_HEIGHT);
 self.view = [[[UIView alloc] initWithFrame:viewFrame] autorelease];
}

(Note: MASTER_WIDTH and MASTER_HEIGHT are simply constants defining the width and height of the screen.)

Once your view is created, you are free to implement, as usual, viewDidLoad, viewWillAppear, viewDidAppear, etc.