NibOwnerLoadable & NibLoadable about reusable

[AliSoftware]

Hi

The difference between the two protocols isn't wether you load them by XIB vs code but in how your XIB file is designed and wether your UIView subclass in your XIB is set as File's Owner or as root view.

So what I'd recommend you is to use NibOwnerLoadable only, because it works well when integrated with another XIB or storyboard… but can also be loaded by code. If you want to load a NibOwnerLoadable view by code simply create an instance of your view then can loadNibContent() on that instance and you're all set.

[codwam]

Yes, I know. My code like below:
`
// CustomView has xib and some propeties outlet.
final class CustomView: UIView, NibOwnerLoadable { }

// AViewController has xib, and a CustomView, it can load it.
final class AViewController: UIViewController {
@IBOutlet weak var customView: CustomView!
}

// BViewController doesn't have xib, and a CustomView, it can load it.
final class BViewController: UIViewController {
fileprivate var customView: CustomView! = {
/*
load with code.
using nib methods it would occure an error, saying "[<NSObject 0x7f80896418b0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key 'xxxxx'."
*/
}()
}
`
I try to load it but it's error. How is the NibOwnerLoadable loading by code ? Like you demo?

[AliSoftware]

What do you mean by your comment "using nib methods it would…"? What "nib methods" did you try to load your CustomView by code?

As suggested above, you should just be able to do this to load your CustomView by code:

final class BViewController: UIViewController {
  fileprivate var customView: CustomView! = {
    let v = CustomView(frame: .zero) // or whatever frame you want 
    v.loadNibContent()
    return v
  }()
}

[codwam]

My NibOwnerLoadable code like below:
fileprivate var customView: CustomView! = { let nib = UINib(nibName: "CustomView", bundle: Bundle.main) let views = nib.instantiate(withOwner: nil, options: nil)// Xcode will raise an NSUnknownKeyException while you have @IBOutlet propeties let view = views.first as! CustomView retrun view }()
I didn't think of using "initWithFrame" then "loadNibContent".
Your reply is correct, Thanks.