I am curious to know how to authenticate the user with twitter and after successful login, i need the email of the user... how can it be done?
Heard that twitter doe
Check out this article and try this search.
Twitter supports OAuth, and I am myself having trouble with it (I am writing a Python script app). A switch to xAuth is possible.
"Mobile and desktop applications are also given the opportunity to use xAuth, a means to exchange a login & password for an access token. To use xAuth, send a request to api@twitter.com with plenty of details about your application and why xAuth is the best choice for it." - http://dev.twitter.com/pages/auth