Day 200
4 Dec 2022
There are details conveying important information that are shown visually with little icons, badges, progress bars, and similar cues that can be missed when they are not added as part of the accessibility label or accessibility value of a UI component.
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Images that convey important information should have the .image accessibility trait and provide an alternative text in the accessibility label. "Image" will be added to VoiceOver's utterance and the user will be able to use Image Explorer. Image Explorer is fairly new, introduced just a couple years ago. But if you were appropriately configuring the image trait, users suddenly got this new functionality for free. Isn't that awesome? With VoiceOver on, open Image Explorer by swiping up in an image and double tapping. It lets users find people (with a basic description and positioning in the photo), objects or text in images, using on-device intelligence. It is very cool!
The .selected accessibility trait indicates when an element has been selected. You’ll notice that VoiceOver announces “selected” before the accessibility label. You can find that in the system for the selected tab in the tab bar, for example.
With VoiceOver, you can swipe up/down to increase/decrease the value of adjustable components. You need to implement accessibilityIncrement() and accessibilityDecrement() accordingly, and configure an accessibility value that makes sense. Example code in the image: ```swift override func accessibilityIncrement() { guard value < 5 else { return } value += 1 accessibilityValue = "\(value) of 5" sendActions(for: .valueChanged) } override func accessibilityDecrement() { guard value > 1 else { return } value -= 1 accessibilityValue = "\(value) of 5" sendActions(for: .valueChanged) } ``` Links to the official documentation: * accessibilityincrement() * accessibilitydecrement()
Content © Daniel Devesa Derksen-Staats on Accessibility up to 11! is licensed under CC BY 4.0. License details
