我有这样的问题。我试过很多方法。我决定使用dirty hack：D
这是我的方式：

I had such a problem. I tried many ways. I decided use dirty hack :D That's my way:

当我得到NSHTTPURLResponse的Facebook（或其他）我保存请求url到NSUserDefaults： p>

When I was getting NSHTTPURLResponse for facebook (or else) i save request url to NSUserDefaults:

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
    NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse*)response;
    if ([[httpResponse URL].absoluteString isEqualToString:@"http://www.simple.com/"])
    {
        [[NSUserDefaults standardUserDefaults] setURL:self.url forKey:@"urlLogin"];
        [self dismissViewController];
    }
}

当我打开我的应用程序时，使用NSURLRequest存储url：

And when I open my App i use NSURLRequest with my stored url:

NSURLRequest *request = [NSURLRequest requestWithURL:[[NSUserDefaults standardUserDefaults] URLForKey:@"urlLogin"] cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:3.0];
[NSURLConnection connectionWithRequest:request delegate:self];