使用Xamarin自动登录Azure移动服务

Question

I'm brand new to Xamarin and playing around with a simple cross-platform app.

The app connects to an Azure Mobile Service, and requires login which I've set up server-side following tutorial : and client-side following tutorial .

Everything works fine! However, the current implementation requires you to login everytime you start the app. How can i cache the user credentials and auto-login as long as you don't log out?

I've tried something like this, but obviously didn't work: When a user is logging in I save (I'm not calling directly to MobileServiceClient, just showing you a snippet):

 var userId = MobileServiceClient.CurrentUser.UserId;
 var authToken = MobileServiceClient.CurrentUser.MobileServiceAuthenticationToken

So i store these two strings, and when I next time open the app I try to:

CurrentClient.CurrentUser = new MobileServiceUser(userId);
CurrentClient.CurrentUser.MobileServiceAuthenticationToken = authToken;

As I said this does not seem to be the correct way since it does not work. What is the correct way to cache and auto-login an user?

Answer 1

You need to move over to a CLIENT-FLOW - in client-flow authentication, you use the client SDK provided by the auth provider and then pass that token silently to Azure Mobile Apps to authenticate there. Check out Chapter 2 of my book - http://aka.ms/zumobook