Quick Reference for the Most Commonly Needed Accessibility Functionality in Swift for iOS

swift-cheat-sheet.md

Accessibility Cheat Sheet for Swift

The Basics

fireButton.accessibilityLabel = NSLocalizedString( "Fire Weapons", comment: "Fire weapons button label" )
fireButton.isAccessibilityElement = true
fireButton.accessibilityHint = "Clearly, you should push this button to shoot your weapons at the bad guys"

Notifications

UIAccessibilityPostNotification( UIAccessibilityScreenChangedNotification, self.fireButton )
UIAccessibilityPostNotification( UIAccessibilityLayoutChangedNotification, nil )

Additional Methods

override func accessibilityDecrement()  {
	self.value -= 0.01;
}

override func accessibilityIncrement()  {
	self.value += 0.01;
}

override func accessibilityActivate() -> Bool {
	self.value = ( self.value == 0.0 ) ? 1.0 : 0.0;
	return true
}

Responding to Accessibility Settings

if ( UIAccessibilityIsGrayscaleEnabled() ) {
    self.tintColor = UIColor.blackColor()
}

if ( UIAccessibilityIsReduceTransparencyEnabled() ) {
    self.alpha = 1.0
} else {
    self.alpha = 0.8
}