added in API Level 16

Controls how this View is important for accessibility which is if it fire accessibility events and if it is report to accessibility services that query the screen.

1. Ensure to change the minSDKVersion to 16, or greater.

       android:importantForAccessibility = "auto"
       android:importantForAccessibility = "yes"
       android:importantForAccessibility = "no"
       android:importantForAccessibility = "noHideDescendants"

auto - The system determines whether the view is important for accessibility  - default (recommended).
yes - The view is important for accessibility.
no - The view is NOT important for accessibility.
noHideDescendants - The view is NOT important for accessibility, nor are any of its descendant views.