Enable cookies in UIWebView (iPhone)

Question

How do I enable cookies in my iPhone application using the UIWebView window so that my login system works?

Answer 1

Start with

[NSHTTPCookieStorage sharedHTTPCookieStorage].cookieAcceptPolicy = NSHTTPCookieAcceptPolicyAlways; 

But, as @JoelFan has already been mentioned, the problem may be your User Agent string, causing ASP.NET to try and fail when logging into cookieless. Instead of an answer that includes

Set-Cookie: .ASPXAUTH = really-long-hex-number

it returns a redirect to something like

Location: / (F (long-sorta-base64ish-look-string)) /

The default UIWebView user agent string looks like

User-Agent: Mozilla / 5.0 (iPad, CPU OS 7_0_2, like Mac OS X) AppleWebKit / 537.51.1 (KHTML, like Gecko) Mobile / 11A501

but ASP.NET doesn't like it. Safari is sending something like this:

User-Agent: Mozilla / 5.0 (iPad, CPU OS 7_0_2, like Mac OS X) AppleWebKit / 537.51.1 (KHTML, for example, Gecko) Version /7.0 Mobile / 11A501 Safari / 9537.53

Do the following early on, perhaps in your AppDelegate.m

 // DON'T try to reuse a UIWebView for this. UIWebView *wv = [[UIWebView alloc] initWithFrame:CGRectZero]; // This webview has already decided to use the default user agent string. // let use javascript to get the existing user agent string NSString *userAgent = [wv stringByEvaluatingJavaScriptFromString:@"navigator.userAgent"]; // let tack on some stuff to make ASP.NET happy userAgent = [userAgent stringByAppendingString:@" Version/7.0 Safari/9537.53"]; [[NSUserDefaults standardUserDefaults] registerDefaults:@{@"UserAgent": userAgent}]; // New UIWebViews inited after here will use the user agent string you made. 

Answer 2

If the site you are accessing is an ASP.NET site, the problem may be that the UIWebView is sending an unrecognized User Agent. See Change User Agent in UIWebView (iPhone SDK)