如果不想讓user可以自動登入,則必須清除暫存在iphone裡的cookie
清除暫存cookie方法:
NSHTTPCookieStorage *cookies = [NSHTTPCookieStorage sharedHTTPCookieStorage];
NSArray *loginCookies = [cookies cookiesForURL:[NSURL URLWithString:[your requestURL]]];
for (NSHTTPCookie* cookie in loginCookies) {
[cookies deleteCookie:cookie];
}
return request;
參考資料:http://stackoverflow.com/questions/7567129/delete-cookies-uiwebview
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