iphone - 如何判断请求何时完成(ASIHTTPRequest)？

Question

如何判断请求何时完成(使用 ASIHTTPRequest)？这是我正在使用的代码:

[request setDidFinishSelector:@selector(requestFinished:)];

...

-(void)requestFinished:(ASIHTTPRequest *)request {

    NSLog(@"The request is done.");

}

但是，当请求完成时，“请求已完成”永远不会打印到日志中。难道我做错了什么？谢谢。

Answer 1

也许您的连接失败？在这种情况下，您应该测试 - (void)requestFailed:(ASIHTTPRequest *)request

您设置了请求委托(delegate)吗？示例代码:

- (IBAction)grabURLInBackground:(id)sender
{
   NSURL *url = [NSURL URLWithString:@"http://allseeing-i.com"];
   ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
   [request setDelegate:self];
   [request startAsynchronous];
}

- (void)requestFinished:(ASIHTTPRequest *)request
{
   // Use when fetching text data
   NSString *responseString = [request responseString];

   // Use when fetching binary data
   NSData *responseData = [request responseData];
}

- (void)requestFailed:(ASIHTTPRequest *)request
{
   NSError *error = [request error];
}