1、清除cookies 解決新浪共享登錄后無(wú)法退出切換賬號(hào)問(wèn)題
NSHTTPCookie *cookie;
NSHTTPCookieStorage *storage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
for (cookie in [storage cookies])
{
[storage deleteCookie:cookie];
}