Not able to add subview to my UIView - ios

Question

I have a UIView element on the screen. It is connected by an IBOutlet radioButtonGroupView. I am trying to add a subview to that element and it is not working. The subview is never added.
Here is my code:
-(id) initWithCoder:(NSCoder *)aDecoder
{
self = [super initWithCoder:aDecoder];
UIView *subView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
subView.backgroundColor = [UIColor yellowColor];
[self.radioButtonGroupView addSubview:subView];
return self;
}

Answer 1

You will probably be better off if you make this element a subclass of a UIViewController (instead of a UIView).
Then put the subview loading code inside viewDidLoad method.
- (void)viewDidLoad
{
[super viewDidLoad]; //not really needed but it doesn't hurt
UIView *subView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
subView.backgroundColor = [UIColor yellowColor];
[self.radioButtonGroupView addSubview:subView];
}
EDIT:
You say that you don't get any frame information on self.radioButtonGroupView in your viewDidLoad. That is almost a certain sign that your IBOutlet is not properly connected to the element in InterfaceBuilder. You can always make a simple test:
- (void)viewDidLoad
{
[super viewDidLoad]; //not really needed but it doesn't hurt
NSLog (#"self.radioButtonGroupView: %#",self.radioButtonGroupView);
[self.radioButtonGroupView setHidden:YES];
}
If it is still shown - then it simply isn't properly connected. IB has it's ways. Simple
deletion of IBOutlet connection and reconnecting it again might do the trick. Also: it your radioButtonGroupView is not UIView but a subclass of UIView, make sure that it's header file is imported in your MyViewController.m file and class properly defined in .xib.