如何在iphone中清除缓存和cookie

Question

在我的iPhone应用程序中，我想在注销页面清除缓存和cookie。请给出适当的建议。现在我使用下面的代码，但它无法正常工作。

[[NSURLCache sharedURLCache] removeAllCachedResponses];

Answer 1

我已经能够使用NSHTTPCookie和NSHTTPCookieStorage

使其有效

    NSHTTPCookie *cookie;
    NSHTTPCookieStorage *storage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
    for (cookie in [storage cookies])
    {
        NSString* domainName = [cookie domain];
        NSRange domainRange = [domainName rangeOfString:@"facebook"]; //i used this to remove facebook related cookie so gave the domain name as facebook
        if(domainRange.length > 0)
        {
            [storage deleteCookie:cookie];
        }
    }

我从未真正使用清除缓存，但使用了一段禁用缓存的代码

NSURLCache *disableCache = [[NSURLCache alloc] initWithMemoryCapacity:0 diskCapacity:0      diskPath:nil];
[NSURLCache setSharedURLCache:disableCache]; 
[disableCache release];