How to delete all cookies of UIWebView?

Question

In my application, I have a UIWebview that loads linkedin auth page for login. When user logs in, cookies saves into the application.

My app has a logout button that is not related to linkedin login. So when user clicks on this button, he logs off from the app. I want that this log off will clear his linkedin cookies also from the app, so that user will log out completely.

Answer 1

According to this question, you can go through each cookie in the "Cookie Jar" and delete them, like so:

NSHTTPCookieStorage *storage = [NSHTTPCookieStorage sharedHTTPCookieStorage]; for (NSHTTPCookie *cookie in [storage cookies]) {    [storage deleteCookie:cookie]; } [[NSUserDefaults standardUserDefaults] synchronize]; 

Answer 2

Just wanted to add some info regarding this.

In OS X 10.9/iOS 7 and later, you can use -resetWithCompletionHandler: to clear the cookies and cache etc. of the whole app from your sharedSession:

Empties all cookies, caches and credential stores, removes disk files, flushes in-progress downloads to disk, and ensures that future requests occur on a new socket.

[[NSURLSession sharedSession] resetWithCompletionHandler:^{     // Do something once it's done. }]; 

The for-In loop with deleteCookie: sounds like modifying while enumerating a collection to me. (Don't know, could be a bad idea?)