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Property Polymorphism With Optional IBOutlet


Property Polymorphism With Optional IBOutlet

By : feitao
Date : November 16 2020, 06:23 AM
With these it helps You can declare button as IBOutlet in your BaseCellWithButton class, and then just connect button from xib in any of your subclasses.
code :


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When is an IBOutlet UIViewController inited, if set as a property? How to optimize IBOutlet UIViewControllers' loading?

When is an IBOutlet UIViewController inited, if set as a property? How to optimize IBOutlet UIViewControllers' loading?


By : user2333309
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , The UIViewController doesn’t initialize the outlets, that’s done by the nib loading code before awakeFromNib and viewDidLoad. Anything that is in one nib file gets loaded, instantiated and intialized at the same time. So as long as your views are in the same nib there is no way to load them on demand. You should put the other views in different nib files and load them when they are needed. Putting everything in one nib is not a good idea.
Releasing iVar IBOutlet vs Property IBOutlet

Releasing iVar IBOutlet vs Property IBOutlet


By : markjane
Date : March 29 2020, 07:55 AM
Hope that helps If you connect these three items via Interface Builder you DO need to release them. Outlets are retained by default. KVC (Key Value Coding) is used to set outlets. This means that loadFromNib will call setValue:withKey for each outlet you have set. This uses the @property and it's setter method, but if none are set (as is your case) it retains the object by default.
What is the difference between an IBOutlet and an IBOutlet property?

What is the difference between an IBOutlet and an IBOutlet property?


By : T Devr
Date : March 29 2020, 07:55 AM
I wish did fix the issue. There is no such thing as a "regular IBOutlet". IBOutlet is just an internal keyword giving Xcode a hint that it should allow the making of an outlet by this name in Interface Builder. What you're describing really has nothing to do with the IBOutlet keyword at all. It's just the ordinary difference between an instance variable declaration and a property declaration.
'IBOutlet' property has non-optional type 'UIButton'

'IBOutlet' property has non-optional type 'UIButton'


By : Kcaj
Date : March 29 2020, 07:55 AM
Hope this helps Here's my code: , It can also be-
code :
    @IBOutlet var button: UIButton! 
    @IBOutlet var weak button: UIButton! (in case you are not doing view unloading)
Nil while unwrapping an Optional IBOutlet value

Nil while unwrapping an Optional IBOutlet value


By : lovillela
Date : March 29 2020, 07:55 AM
seems to work fine Try doing it in viewDidLayoutSubviews instead of layoutSubviews. You UI elements should be ready in viewDidLayoutSubviews, but not necessary in layoutSubviews.
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