You can use announce for accessibility option in this case.
anounceForAccessibility
added in API level 16
public void announceForAccessibility (CharSequence text)
Convenience method for sending a AccessibilityEvent.TYPE_ANNOUNCEMENT AccessibilityEvent to make an announcement which is related to some sort of a context change for which none of the events representing UI transitions is a good fit. For example, announcing a new page in a book. If accessibility is not enabled this method does nothing.