Asking permission for location when a specific page is opened (PCL)

I have my permission request setup in Android's mainactivity, and if you have location disabled and open the app, it will request location. It's a bit tedious and I'd like it to only request for permission when you open a specific content page.

I have my xaml content page in my PCL. Right now, in my Android mainactivity, I put await GetPermissionsAsync in OnCreate().