Create accessible spatial experiences

5:28 - Use AccessibilityComponent with RealityKit

var accessibilityComponent = AccessibilityComponent()
accessibilityComponent.isAccessibilityElement = true
accessibilityComponent.traits = [.button, .playsSound]
accessibilityComponent.label = "Cloud"
accessibilityComponent.value = "Grumpy"
cloud.components[AccessibilityComponent.self] = accessibilityComponent

// ...

var isHappy: Bool {
    didSet {
        cloudEntities[id].accessibilityValue = isHappy ? "Happy" : "Grumpy"
    }
}

8:04 - Add an activate action

var accessibilityComponent = AccessibilityComponent()
accessibilityComponent.isAccessibilityElement = true
accessibilityComponent.traits = [.button, .playsSound]
accessibilityComponent.label = "Cloud"
accessibilityComponent.value = "Grumpy"
accessibilityComponent.systemActions = [.activate]
cloud.components[AccessibilityComponent.self] = accessibilityComponent

// ...

content.subscribe(to: AccessibilityEvents.Activate.self, componentType: nil) { activation in
    handleCloudCollision(for: activation.entity, gameModel: gameModel)
}

9:23 - Announce meaningful events and changes in context

AccessibilityNotification.Announcement("8 clouds in front of you").post()

13:15 - Provide alternatives to head anchored content

// SwiftUI
@Environment(\.accessibilityPrefersHeadAnchorAlternative)
private var accessibilityPrefersHeadAnchorAlternative

// UIKit
AXPrefersHeadAnchorAlternative()
NSNotification.Name.AXPrefersHeadAnchorAlternativeDidChange

15:04 - Provide alternatives when Reduce Motion is enabled

// SwiftUI
@Environment(\.accessibilityReduceMotion)
private var accessibilityReduceMotion

// UIKit
UIAccessibility.isReduceMotionEnabled
UIAccessibility.reduceMotionStatusDidChangeNotification

23:35 - Check whether captions are enabled

UIAccessibility.isClosedCaptioningEnabled
UIAccessibility.closedCaptioningStatusDidChangeNotification