Bottom Tab Navigator

Tab item	I see	I hear
Selected	Yes: Is visually clear that the tab is active	Yes: The Screen Reader reads the "selected" state
Label		Purpose is clear and matches visible label
Role		The role: tab
Talkback1		[tab index] of [total]

Testing

Procedures

1. Turn on a Screen Reader.
2. Move focus to the Tab navigator.
3. Evaluate whether the label adequately and uniquely describes the component and clearly communicates its function.
4. Verify whether the active state is announced appropriately.

Outcome

Ensure all the following checks are true:

• The label is clear and understandable.
• The component is announced as a "tab" by the screen reader.
• The selected tab is announced as "Selected" by the screen reader.

Example

Voice Over	TalkBack
selected, Home, tab	selected, Home, tab 1 of 3
Video, tab	Video, tab 2 of 3, double-tap to select
User, tab	User, tab 2 of 3, double-tap to select

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1. This behaviour is inherent only to Android.↩