Display content in a multiline textview on right side of navigationview on item click

Hi,
I am new to android development . I have implemented a navigation view without gravity="start" ie the view displays on the screen as is without the need to drag from the left edge. I want to display a multiline textview on the right of the navigation view which will be populated by content from a word file when the user clicks on a menu item in the navigation view. How do i accomplish this ?

Please help

regards

Sanjish