public final void setBackButtonText ( @ NonNull final CharSequence text ) { Condition . INSTANCE . ensureNotNull ( text , "The text may not be null" ) ; Condition . INSTANCE . ensureNotEmpty ( text , "The text may not be empty" ) ; this . backButtonText = text ; adaptBackButtonText ( ) ; }
Sets the text of the back button which is shown when the activity is used as a wizard .