Range slider

When I use	I see/hear
Tab	Focus moves visibly to the input
Arrow-keys	Increase / decrease value one step

When I use	I hear
Swipe	Focus moves to the input
Ios-swipe-up	Increase/decrease slider value one step
Android-volume	Increase/decrease slider value one step

Reads	I hear
Name	Name describes the purpose of the control and matches the visible label - iOS only
Role	Identifies itself as "adjustable" in iOS and "seek control" in Android
Group	Label is read with the input
State	Expresses its current value

When I use	I see
Text resize	Text can resize up to 200% without losing information

Developer Notes

A slider is a horizontal track with a control called a thumb, which you
can slide with your finger to move between a minimum and maximum value

Name describes the purpose of the control
iOS Options
- Set a label in Interface Builder in the Identity Inspector
- Group visible text label and the control in the same view container: accessibilityFrameInContainerSpace
- setTitle( ) method
- If no visible label, use accessibilityLabel on control
- Hint is used only if the results of interacting with it are not obvious from the control’s label.
- Match visible label, if any
- To hide labels from VoiceOver announcements, uncheck the Accessibility Enabled checkbox in the Identity Inspector
- If hiding visible label, use accessibilityLabel on control
Android Options
- android:text XML attribute
- Optional: use contentDescription for a more descriptive name, depending on type of view and for elements without a visible label.
- contentDescription overrides android:text
- Use labelFor attribute to connect the visible label to the control

iOS
- Active: isEnabled property
- Disabled: UIAccessibilityTraitNotEnabled. Announcement: dimmed
Android
- Active: android:enabled=true
- Disabled: android:enabled=false. Announcement: disabled

Only manage focus when needed. Primarily, let the device manage default focus.
Consider how focus should be managed between child elements and their parent views.
iOS Options
- accessibilityElementIsFocused
- isAccessibilityElement - Yes, if the element can respond to user input
- To move screen reader focus to newly revealed content: UIAccessibilityLayoutChangedNotification
- To NOT move focus, but announce new content: UIAccessibilityAnnouncementNotification
Android Options
- android:focusable=true
- android=clickable=true
- Implement an onClick( ) event handler for keyboard, not onTouch( )
- nextFocusDown
- nextFocusUp
- nextFocusRight
- nextFocusLeft
- accessibilityTraversalBefore (or after)
- To move screen reader focus to newly revealed content: Type_View_Focused
- To NOT move focus, but announce new content: accessibilityLiveRegion
- To hide controls: Important_For _Accessibility_NO