Use this property to specify a custom selection image. Your image is rendered on top of the tab bar but behind the contents of the tab bar item itself. The default value of this property is nil, which causes the tab bar to apply a default highlight to the selected item.
The tint color applied to the selected tab bar item.
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.