Question

I have several IBOutlet and use them with IBOutletCollection :

    @interface IBOutletCollectionViewController : UIViewController {


    IBOutletCollection (UILabel) NSArray *multipleLabels;

}

@property (nonatomic , retain) IBOutletCollection (UILabel) NSArray *multipleLabels;

@end

but when I want use the UILable properties the compiler gives this error :

request for member ‘textColor’ in
something not a structure or union

I think it’s because of NSArray ! is there any solution for that ?

Answer 1

You can use Key-Value Coding to set the property on each label instance in the array:

[multipleLabels setValue:[UIColor redColor] forKey:@"textColor"];

“IBOutletCollection(UILabel)” can be omitted in the iVar declaration as long as it’s used in the property declaration.

Another option is to call “makeObjectsPerformSelector:” on the NSArray instance:

[multipleLabels makeObjectsPerformSelector:@selector(setTextColor:) withObject:[UIColor redColor]];