R – UIViewController not working for the first time

initializationiphonenibnulluiviewcontroller

MyController *myViewController = [[MyController alloc] initWithNibName:@"myView" bundle:nil];

The nib file myView.nib has 2 uiimageviews and 2 uilabels. When I first init myViewController, all the 4 subviews are set as 0x0.
The second time I dont get such a behavior.

Best Answer

The view object itself does not get created until it is referenced via self.view and loadView is called. It could be that the first time you try to inspect the view or do something with it this hasn't happened yet, and the second time could be after the system creates the view if you are adding it to another view or a navigation controller or something.

Related Solutions

Iphone – Why doesn’t initWithNibName work for the UIViewController subclass

Have you overridden the loadView method in PageViewController? What if you NSLog the viewController1.view?

Indeed, in Interface Builder, you have to set the file's owner to PageViewController, and connect its view to the view you have in Interface Builder.

Objective-c – UIPageControl with UIView with button

In the InitWithString code, you're passing in a Dictionary, not a string.

- (id)initWithString:(NSDictionary *)_s {
    if (self = [super initWithNibName:@"ContactCardViewController" bundle:nil]) {
        NSMutableString *t = [[NSMutableString alloc] initWithString:_s];
        s = t;
    }
    return self;
}

You may want to change that to NSString, or change the NSMutableString... to an instance of NSDictionary. One or the other.

Best Answer

Related Solutions

Iphone – Why doesn’t initWithNibName work for the UIViewController subclass

Objective-c – UIPageControl with UIView with button

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