iphone - 登录谷歌下载文件 - ios

Question

我正在尝试从 googletrends 下载文件。为此，我必须登录。我正在使用 NSURLConnection 所以我想我必须使用

- (void)connection:(NSURLConnection *)connection willSendRequestForAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge

我必须设置什么参数？即如何定义用户名和密码？？

Answer 1

使用 NSURLCredential 用于传递用户名和密码:

- (void)connection:(NSURLConnection *)connection willSendRequestForAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
{
    NSURLCredential *credential = [NSURLCredential credentialWithUser:userName password:userPassword persistence:NSURLCredentialPersistenceForSession];

    [[challenge sender] useCredential:credential forAuthenticationChallenge:challenge];
}

请查看本教程:Handling URL Authentication challenges