如何在Windows Phone 8应用程序中检查社交网络身份验证？

Question

In my application users can login using the social networks such as facebook, twitter, linkedin so can any one tell me how to check whether user is already logged in with the facebook/twitter/linkedin in Phone with browser or other internal Apps, My application should also be able to know that the user has logged in so that it should not ask again for the login screen, Even if the user logged in using web browser/Facebook internal App my application should be able to access those credentials and it should allow users to login with out asking for the credentials again.

How to do this.

Thank you for all hints and your help in advance!

Answer 1

Have you ever gone any authentication methods? This link helps you to undergo Facebook login authentication, where it asks for the permission for the first time and if user accepts, it stores all those credentials about the particular user.

Next time the person logs in, they don't want to login again. You just call the login method in startup and it automatically makes the login successful. You can also get the user informations, such as email address and basic informations and store it in your application(Isolated Storage) if the user gives access to your application and you can use it next time when the user enter into the application.

Like you can also perform authentication in Microsoft Account, Facebook, Twitter & Google w/ Mobile Services in the below link

http://code.msdn.microsoft.com/windowsapps/WP-Authenticate-Account-c7e0ef84