Is there a way to check if "increase contrast" is enabled in the accessibility settings in iOS?

Question

On iOS 7.0.3 turning on increased contrast mode removes the blur effects you'd normally see in the nav bar if you're using a bar tint color with an alpha less than 1.0, which makes the nav bar seem much more transparent than it is with the default settings.

Is there a way to programmatically check to see if this setting is enabled? While UIAccessibility has a ton of other functions like UIAccessibilityIsInvertColorsEnabled(), I can't find anything related to this setting specifically.

Answer 1

Apparently there's no public API for checking whether that option is on.

According to the UIKit Function Reference, the only checks you can perform are the following

• UIAccessibilityPostNotification
• UIAccessibilityIsVoiceOverRunning
• UIAccessibilityIsClosedCaptioningEnabled
• UIAccessibilityRequestGuidedAccessSession
• UIAccessibilityIsGuidedAccessEnabled
• UIAccessibilityIsInvertColorsEnabled
• UIAccessibilityIsMonoAudioEnabled
• UIAccessibilityZoomFocusChanged
• UIAccessibilityRegisterGestureConflictWithZoom
• UIAccessibilityConvertFrameToScreenCoordinates
• UIAccessibilityConvertPathToScreenCoordinates

Answer 2

As of iOS 8 there is a way to check:

UIKIT_EXTERN BOOL UIAccessibilityDarkerSystemColorsEnabled() NS_AVAILABLE_IOS(8_0);

as of modern iOS:

UIAccessibility.isDarkerSystemColorsEnabled

Answer 3

For iOS 13 and above we can use accessibilityContrast

Documentation

Use this trait to determine whether the user requested a high contrast between foreground and background content. The user sets the contrast level in the Accessibility area in Settings.

Apple doc link