Android :- How to Call an Intent to Google Maps ( will take user to the app itself ) to return Co-Ordinates of a place pinned by the user

Question

I am making an android application in which user has to enter co-ordinates of a place or either pickup from Google Maps, so I want to make an Intent so that user will be redirected to Google Maps and choose the location there and click OK.This will fill the co-ordinates of that place in my application.