public void StartAuthentication(string clientId, string scope, string appSecret, Uri authorizeUrl, Uri redirectUrl, Uri tokenUrl, bool codeChallengeMethod)
{
Xamarin.Auth.OAuth2Authenticator oAuth2 = new Xamarin.Auth.OAuth2Authenticator(clientId,
appSecret,
scope,
authorizeUrl,
redirectUrl,
tokenUrl);
oAuth2.Completed += OnOAuth2Completed;
oAuth2.Error += OnOAuth2Error;
Android.Content.Context context = Android.App.Application.Context;
Android.Content.Intent loginUI = oAuth2.GetUI(context);
loginUI.AddFlags(Android.Content.ActivityFlags.NewTask);
context.StartActivity(loginUI);
}
public static void OpenUserProfile(UserAccount Account, Android.Content.Context context)
{
ProfileActivity.SetProfileAccount(Account);
context.StartActivity(new Android.Content.Intent(context, typeof(ProfileActivity)));
}