我试图执行一个asynchornus请求。我做我的研究,这是我最好的,但代码是充满了我不找创建一个异步请求
NSURL *url2 = [NSURL URLWithString:@"www.google.com"];
NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url2];
NSOperationQueue *queue = [[NSOperationQueue alloc] init];
[NSURLConnection sendAsynchronousRequest:urlRequest queue:queue completionHandler:^(NSURLResponse *response, NSData *data, NSError *error)
{
if ([data length] > 0 && error == nil)
[delegate receivedData:data];//i get the error here use of undeclared identifier 'delegate' ,when I put self insead I receive the error : no visible @interface for "my class name" declares the selector "received data"
else if ([data length] == 0 && error == nil)
[delegate emptyReply];//same error here
else if (error != nil && error.code == ERROR_CODE_TIMEOUT) //the error here is "use of undelcared identifier ERROR_CODE_TIMEOUT
[delegate timedOut];//error here is save as the first one
else if (error != nil)
[delegate downloadError:error];//error here is save as the first one
}];
的解决方案,我已经在我的.h文件中添加NSURLConnectionDelegate
错误的
有人可以告诉我什么是错误?
感谢
能否请您粘贴输出? – 2012-03-29 04:39:30