无法清除UIWebView缓存

Question

我似乎找不到清除UIWebView缓存的方法。我尝试过以下方法，但到目前为止还没有工作：

[[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookieAcceptPolicy:NSHTTPCookieAcceptPolicyNever];

[[NSURLCache sharedURLCache] removeCachedResponseForRequest:_request];
[[NSURLCache sharedURLCache] removeAllCachedResponses];
_request = nil;

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

_request = [NSMutableURLRequest requestWithURL:t_url 
             cachePolicy:NSURLRequestReloadIgnoringLocalCacheData 
// also tried NSURLRequestReloadIgnoringLocalAndRemoteCacheData and NSURLRequestReloadIgnoringCacheData
             timeoutInterval:10.0];
[_request setCachePolicy:NSURLRequestReloadIgnoringLocalAndRemoteCacheData];
[_request setHTTPShouldHandleCookies:NO];

- (NSCachedURLResponse *)connection:(NSURLConnection *)connection   
                  willCacheResponse:(NSCachedURLResponse *)cachedResponse {
    return nil; // Actually never gets called
}

有人遇到过这个吗？谢谢！

Answer 1

你好像几乎尝试了一切。我知道你拒绝了这些饼干。然而，为什么不尝试这个？这对我有用......

   NSHTTPCookie *aCookie;
    for (aCookie in [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies]) {
        [[NSHTTPCookieStorage sharedHTTPCookieStorage] deleteCookie:aCookie];
    }