What is Referencing outlet collection in Xcode4 Interface Builder?

ios iphone xcode4 interface-builder iboutletcollection
Sagar Kothari picture Sagar Kothari · Jul 11, 2011 · Viewed 16.3k times · Source

enter image description here

Here, I have pointed to the Referencing Outlet Collection. I am not able to figure out its usage in XCode4.

I am asking for the `new feature of REFERENCING OUTLET COLLECTION in InterfaceBuilder of XCode4".

Answer

Rui Peres picture Rui Peres · Jul 11, 2011

The IBOutletCollection is a way to group IBOutlets. Imagine that you have 3 or 4 UILabels, on which you will apply a style (font, backgroundColour, opacity, etc). With a IBOutletCollection, it becomes trivial to do this. First you need to define your IBOutletCollection:

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

(notice the type we are putting inside parenthesis, although we could put an id, if we had a mix collection)

Connect the IBoutlets on Interface Builder and then just iterate it:

for(UILabel *label in labelsCollection)
{
    // Apply your styles
}

Hope this helps you understand:

http://useyourloaf.com/blog/2011/3/28/interface-builder-outlet-collections.html

Related questions

How to select Multiple images from UIImagePickerController

In my application, I have to select more images ie; up to 3 images from library or capture of images.

Read More
How to register a custom app opening URL scheme with Xcode 4?

Xcode4 is asking for a huge number of arguments just to make this simple thing possible: NSString *stringURL = @"twitterriffic://"; NSURL *url = [NSURL URLWithString:stringURL]; [[UIApplication sharedApplication] openURL:url]; What are all these properties for? Why an image? Must I repeat …

Read More
Linking a static library to an iOS project in Xcode 4

I have a project (AQGridView) that compiles to a static library, but I can't seem to add it to my project. Dragging in the project to my project creates a workspace, and if I try to link the libAQGridView.a …

Read More