Guidelines for using tab navigation

When using tab navigation to create interactivity, you should place at least two objects (input text fields, buttons, or a combination) on the screen at the same time. If the screen only contains a single button or input text field, the user can't change the focus and may feel stuck in the user interface.

If a screen in your application contains only a single button for user interaction, consider detecting a keypress event rather than using button events. For more information, see Handling key events.