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VisualizaçõesUIAccessibility announcing n of n elements on custom views
When you add a UISegmentedControl to a view, UIAccessibility will focus on it and say:
"(Selected) ItemName Button 1 of 2"
"ItemName Button 2 of 2"
I have a custom control that has UIButtons that toggle similar to a UISegmentedControl. But what I'm trying to figure out is how to get the Voice Over to announce the n of n at the end.
The closest thing that I've found is assigning the .accessibilityTraits = .tabBar on the container. The issue is that it announces:
"ItemName Button Tab 2 of 2"
But to conform to our accessibility guidelines we can't have it announce "tab".
https://developer.apple.com/documentation/uikit/uiaccessibility/uiaccessibilitytraits/1648592-tabbar
Short of just writing a custom accessibilityLabel is there anything within UIAccessibility that can handle this logic?
2 Respostas
Responde à pergunta0
- Set the container view's accessibilityTraits = .tabBar
- Set the container view's accessibilityElements = [button1, button2]
- Set each button's accessibilityTraits = .selected or .none when necessary
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I have a custom control that has UIButtons that toggle similar to a UISegmentedControl. But what I'm trying to figure out is how to get the Voice Over to announce the n of n at the end.
- Put each one of your
UIButtonelements in theaccessibilityElementsarray of the custom control that acts like a container. - By searching a specific element in this array, you will have an index 'x' inside a total amount 'N' of buttons: "item name button x of N".
- In your
UIButton, setaccessibilityLabelby inserting the result of the previous research.
Here's a kind of logic that should help you reach your purpose with a little bit of code as follows for instance (Xcode 10.2.1, Swift 5.0, iOS 12):
class ButtonsViewController: UIViewController {
@IBOutlet weak var myCustomContainer: UIView!
@IBOutlet weak var btn1: UIButton!
@IBOutlet weak var btn2: UIButton!
@IBOutlet weak var btn3: UIButton!
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
myCustomContainer.accessibilityElements = [btn1!, btn2!, btn3!]
let nbButtons = myCustomContainer.accessibilityElements?.count
for (index, elt) in (myCustomContainer.accessibilityElements?.enumerated())! {
let btn = elt as! UIButton
let btnName = btn.titleLabel?.text
btn.accessibilityLabel = btnName! + String(index + 1) + " of " + String(describing: nbButtons!)
}
}
}