accessibilityRepresentation(representation:)

Discussion 議論

You can make controls accessible by using a custom style. For example, a custom ToggleStyle that you create inherits the accessibility features of Toggle automatically. When you can’t use the parent view’s accessibility elements, use the accessibilityRepresentation(representation:) modifier instead. This modifier replaces default accessibility elements with different accessibility elements that you provide. You use synthetic, non-visual accessibility elements to represent what the view displays.

The example below makes a custom adjustable control accessible by explicitly defining the representation of its step increments using a Slider:

var body: some View {
    VStack {
        SliderTrack(...) // Custom slider implementation.
    }
    .accessibilityRepresentation {
        Slider(value: $value, in: 0...100) {
            Text("Label")
        }
    }
}

SwiftUI hides the view that you provide in the representation closure and makes it non-interactive. The framework uses it only to generate accessibility elements.