object instantiated by UINib not showing its proper class? - ios

Question

I have a xib file, which is a view, and I have designated it as a FooView class.
When I allocate it:
UINib *fooViewXib = [UINib nibWithNibName:#"FooView" bundle:[NSBundle mainBundle]];
FooView *fooView = [[fooViewXib instantiateWithOwner:self options:nil] lastObject];
fooView.lolLabel.text = #"lol";
If I then ask it:
[fooView isKindOfClass:[FooView class]];
It says no...
Yet, if I NSLog the fooView object, it says it's a fooView. And if I NSLog the class of the fooView object directly, it shows as a FooView class.
Why does isKindOfClass not correctly identify this object, and how can I do so?

Answer 1

Instead of using lastObject, loop through the array until you find a view with the correct class. Do it like this
NSArray *nibViews = [[NSBundle mainBundle] loadNibNamed:#"FooView" owner:self options:nil];
FooView *view;
for (id object in nibViews)
if ([object isKindOfClass:[FooView class])
view = object;
// do whatever you want with view
This will ensure that you get a view with the correct class.

Answer 2

There's no need to iterate through the array created by instantiating a nib when you can connect the object you want to an outlet. You don't say what class your code is part of, but lets assume it's a view controller. You can simply make fooView an outlet in your view controller:
#interface MyViewController : UIViewController
...
#property (strong, nonatomic) IBOutlet FooView* fooView;
#end
Set the type of File's Owner in the nib to MyViewController and connect the foo view to the fooView outlet of File's Owner. Now in your view controller you can just pass self as the nib's owner:
UINib *fooViewXib = [UINib nibWithNibName:#"FooView" bundle:[NSBundle mainBundle]];
[fooViewXib instantiateWithOwner:self options:nil];
After that, the fooView property will be connected to the right view.