iOS 清除cookies

如果项目中使用了wkwebview，只用[[NSHTTPCookieStorage sharedHTTPCookieStorage] delete:cookie] 是不行的，要用[[WKWebsiteDataStore defaultDataStore] removeDataOfTypes:]

+(void)clearCookie {
    // allWebsiteDataTypes清除所有缓存

    NSArray * types = @[WKWebsiteDataTypeCookies];

    NSSet*websiteDataTypes= [NSSetsetWithArray:types];

    NSDate *dateFrom = [NSDate dateWithTimeIntervalSince1970:0];

    [[WKWebsiteDataStore defaultDataStore] removeDataOfTypes:websiteDataTypes modifiedSince:dateFrom completionHandler:^{



    }];

    //清除cookies

    NSHTTPCookie*cookie;

    NSHTTPCookieStorage *storage = [NSHTTPCookieStorage sharedHTTPCookieStorage];

    for(cookiein[storagecookies]){

        [storagedeleteCookie:cookie];

    }
}