i am integrating twitter in my iphone music application.When the user enters username and password in the login dialog box of twitter and clicks on the post button the user is redirected to updatecontroller page where he can post his comments on the twitter and when he returns backand clicks on another songs his username and password is lost.So, i need help that when user click on the save username and password button his username and password should be saved. please help me regarding this problem.