i am using a webview in an app which has keep me signed in functionality like facebook app.so in order to implement i need that the cookie should be persistant.I just wanted to know whether ios persists the cookie by default when the app is closed or i need to save the cookie manually before closing the app to implement keep me signed in functionality.
any help would be deeply appreciated. Thanks
You want to use a NSHTTPCookieStorage object to manage the cookies. The short answer to your question is to use NSHTPPCookieStorage which will distribute the shared instance. You can use this instance to get/set cookie information.
Take a look at the Apple documentation for NSHTTPCookieStorage, as well as the following two posts:
Where are an UIWebView's cookies stored?
http://blog.andrewpaulsimmons.com/2008/08/add-set-and-delete-cookies-in-uiwebview.html
These should get you started down the right track.
来源：https://stackoverflow.com/questions/9273063/what-happens-to-cookies-of-webview-on-closing-the-application