VoiceOver focus must move to the sheet when displayed and back to the trigger button when the sheet is closed.
Sheet title text must be coded as a Heading for VoiceOver users.
Use .sheet() to code a native SwiftUI sheet that receives VoiceOver focus when opened.
Use AccessibilityFocusState and .sheet(onDismiss:) to send focus back to the trigger button that opened the sheet when the sheet is closed.
Place the sheet's content inside a ScrollView or else the text will truncate when enlarged.
Platform Defects:
- Sheets will not automatically send focus back to the trigger button and this could be considered an accessibility defect in Apple's native
.sheet()component in which case bugs should be filed with Apple.
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