iphone - Cookies don't work in UIWebView displaying "local content" -

there lot of threads using uiwebview caches and/or cookies, seem relate remote urls.

i cannot cookies work when "displaying local content" (as iphone docs call it).

for example, if load plain old html file bundle resource:

     - (void) viewdidload {         [super viewdidload];          nsstring* path = [[nsbundle mainbundle] pathforresource:@"index" oftype:@"html"];         nsurl* url = [nsurl fileurlwithpath:path];         nsdata* data = [nsdata datawithcontentsoffile:path];         [web loaddata:data mimetype:@"text/html" textencodingname:@"us-ascii" baseurl:url];     } 

then:

    - (void) webviewdidfinishload:(uiwebview*)webview {         nsstring* result = [web stringbyevaluatingjavascriptfromstring:                             @"try{document.cookie='name=value';''+document.cookie;}catch(e){''+e}"];         nslog(@"result = '%@'", result);     } 

results in:

    result = '' 

setting url actual filename rather directory prevents getting: result = 'error: security_err: dom exception 18', cookies not seem persist.

i have found satisfactory work-around. specifying real url, such http://localhost/..., , intercepting loading, subclassing nsurlcache class, in order fetch actual local content.

- (nscachedurlresponse*) cachedresponseforrequest:(nsurlrequest *)request {     nsstring* path = [[request url] path];      nsdata* data = [... content of local file ...];      nsurlresponse *response = [[nsurlresponse alloc]                                 initwithurl:[request url]                                mimetype:[self mimetypeforpath:path]                                expectedcontentlength:[data length]                                textencodingname:nil];      nscachedurlresponse* cachedresponse = [[nscachedurlresponse alloc]                                             initwithresponse:response                                             data:data];     [response release];      return [cachedresponse autorelease]; }