只有在我的 UIView 子类中设置了所有属性后，如何才能调用函数？

Question

I have a UIView subclass somewhat like this:

class AView: UIView {
    var aString = "A String"
    var aBool = true

    override func didMoveToSuperview() {
        func doSomethingWithTheString() {
            if aBool {
                doSomething(withString: aString)
            }
        }
    }
}

Then I add a UIView to a storyboard and set it's class as AView . I link it to my view controller and do this:

@IBOutlet weak var aView: AView!

override func viewDidLoad() {
    aView.aBool = false
    aView.aString = "Another String"
}

The thing is, when doSomethingWithTheString() is called aBool is still true and aString is still "A String" , even though I changed them at viewDidLoad() .

So is there somewhere in AView where I can put doSomethingWithTheString() for it to be called only when all properties have been set? I hoped didMoveToSuperview() would do the trick, but apparently it's still too early.

I thought of calling it in a property's setter, but I don't know which properties will be set and which will be left with their default, and it should only be called when the last property has been set.

Answer 1

Put aString and aBool in a dictionary (aDictionary) then declare

var aDictionary: NSDictionary? {
    didSet{
        doSomethingWithTheString()
    }
}

Of course change a bit the doSomethingWithTheString() to work with the dictionary