Xamarin android OAuth with ADFS and ADAL Issues

I am writing a Xamarin.Forms app that uses ADAL to authenticate with.

I am using ADFS for authentication and am only worried about the Android client right now. My problem is, whenever I invoke the AcquireTokenAsync, I get the login screen but with no content.

I have already proved out getting a token from ADFS using postman and had no issues.

My code (I am just trying to prove this out right now, I don't really care about the implementation):

     string authority = "adfs_url";
     string resourceURI = "myidentity";
     string clientID = "123-123-123";
     string clientReturnURI = "somelocalhost";


     var authContext = new AuthenticationContext(authority,false);

        Task.Run(async () =>
        {
            var authResultAsync = await authContext.AcquireTokenAsync(resourceURI, clientID, new Uri(clientReturnURI), PlatformParameters);
        });

My platform parameters are being set in the Page Renderer

protected override void OnElementChanged(ElementChangedEventArgs<Page> e)
{
    base.OnElementChanged(e);

    this.page = e.NewElement as MainPage;
    this.page.PlatformParameters = new PlatformParameters(this.Context as Activity);
}

The only lead I have is I get this in my console output

Failed to validate the certificate chain, error: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.

And I also get this, but it seems to be a red herring (some blog post said with just shows up on Android N devices which is the sdk level I am using)

Rejecting re-init on previously-failed class java.lang.Class: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/webkit/TracingController;

Any help on this would be great appreciated, I have really been banging my head against it for a couple of days.