Accessing to UIView contents of a UIScrollView in Swift - swift

Question

I have a function that creates an scrollview "personsScrollView".
#IBOutlet var personsScrollView: UIScrollView!
var personsScroll = UIView()
personsScroll = createPersonsScroll(CGSizeMake(60.0, 80.0), avatarCount: 10)
func createPersonsScroll(buttonSize:CGSize, avatarCount:Int) -> UIView {
let padding = CGSizeMake(10, 10)
let personButtonView = UIView()
var buttonPosition = CGPointMake(padding.width * 0.5, padding.height)
let buttonIncrement = buttonSize.width + padding.width
personButtonView.frame.origin = CGPointMake(0,0)
personButtonView.frame.size.width = (buttonSize.width + padding.width) * CGFloat(avatarCount+1)
personButtonView.frame.size.height = (buttonSize.height + 2.0 * padding.height)
for i in 0...(avatarCount-1) {
let button = UIButton(type: .Custom)
button.tag = i
button.frame.size = CGSize(width: 60, height: 55)
button.frame.origin.x = buttonPosition.x
button.imageView?.contentMode = UIViewContentMode.ScaleAspectFit
button.setImage(UIImage(named: self.person[button.tag].avatar), forState: .Normal)
button.addTarget(self, action: "addPersonSelected:", forControlEvents: .TouchUpInside)
buttonPosition.x = buttonPosition.x + buttonIncrement
let label = UILabel(frame: CGRectMake(0, 60, 60, 15))
label.text = self.person[i].name
button.addSubview(label)
personButtonView.addSubview(button)
}
}
personsScrollView.contentSize = personButtonView.frame.size
personsScrollView.addSubview(personButtonView)
return personButtonView
}
This function creates a UIView "personButtonView" that will contain the 10 UIbuttons "button", and each button has a different image.
My questions is, outside of the code, in ViewDidLoad(), how do I access for example to the image of the 2nd button to replace only that image? Or how to access to the label of the 4th button to change its text?
I would appreciate your help!
Thanks in advance!

Answer 1

Looking at this code, a hierarchy of views and subviews is being created. If you want a clean way to access these then you can simply create UIView subclasses to encapsulate your content.
To do this, refactor your code in createPersonsScroll into initializers. I can see several UIButton views being created, so you can define an AvatarButton class to encapsulate those, and probably also a PersonView class for its parent, with a property to access its content.
The idea is that you could then replace
personsScroll = createPersonsScroll(buttonSize: CGSizeMake(60.0, 80.0), avatarCount: 10)
with for example:
personView = PersonView(CGSizeMake(60.0, 80.0), avatarCount: 10)
// ...
personView.avatarButtons[2].image = myImage
personView.avatarButtons[4].text = myString