iOS How do you declare IBOutlets?

[MacMan988]

What is the difference between declaring IBOutlets as

FooController.h:

@interface FooController : UIViewController {
    IBOutlet UILabel *fooLabel;
}

@end

and

@interface FooController : UIViewController 

@property (nonatomic, retain) IBOutlet UILabel *fooLabel;

@end

Does it have to include the @property keyword when declaring IBOutlets? How do you declare them?

 

[Menneisyys2]

What is the difference between declaring IBOutlets as ...Does it have to include the @property keyword when declaring IBOutlets? How do you declare them?

1. While,
- if you use ARC and
- don't reassign references (to, say, a, from your app, dynamically instantiated widget) and
- you don't try to compile it with the long-abandoned (but, as of Xcode 4.4, still selectable), for iOS compilation, pretty much useless GCC,

there's no real difference between the two approaches, Apple still recommends using properties:

“From a practical perspective, in iOS and OS X outlets should be defined as declared properties. Outlets should generally be weak, except for those from File’s Owner to top-level objects in a nib file (or, in iOS, a storyboard scene) which should be strong.”

https://developer.apple.com/library...bs.html#//apple_ref/doc/uid/10000051i-CH4-SW6

That is, while ivars do work, use properties instead.

2. You don't have to manually create their full declaration - just drag in the Assistant editor from the XIB to the VC.h and you're set - except for the property name, everything will be auto-filled-in.