Authorizing Xamarin PCL app with Azure Active Directory

Hi,

I am developing a Xamarin PCL app using Xamarin.Forms and have a requirement to log in to it through Azure Active Directory. I have tried to achieve this by using Xamarin.Auth, however it seems that Azure AD doesn't support implicit grant flow as pointed out in the following link:

http://stackoverflow.com/questions/25511096/getting-error-unsupported-response-typeerror-description-aadsts70005-with-tok

I am receiving the same error as described in that link. Does anyone have any idea how to go about this? I basically just want to be able to load the following page : https://login.microsoftonline.com/, log in using my azure active directory and on receiving a valid token, load the first page of my app. This is a requirement for all 3 platforms (Android, iOS and WP8), although right now I am just trying to get it to work on Android.

Many Thanks,

Mike.