iphone - NSURLConnection 委托(delegate)方法

Question

我很难找到 NSURLConnection 委托(delegate)方法实现的任何示例。

我想通过单击按钮通过 HTTP post 发送数据。不确定如何制作“提交”屏幕和“已提交”。 (我知道如何使用微调器并将使用它们)

我在单击按钮操作下使用此代码，但无法使用任何委托(delegate)内容。不确定如何使用我当前的设置来实现它们。

NSMutableURLRequest *request = 
    [[NSMutableURLRequest alloc] initWithURL:
     [NSURL URLWithString:@"http://myURL.com"]];

    [request setHTTPMethod:@"POST"];

    NSString *postString = [wait stringByAppendingString:co];

    [request setValue:[NSString 
                       stringWithFormat:@"%d", [postString length]] 
   forHTTPHeaderField:@"Content-length"];



    [request setHTTPBody:[postString 
                          dataUsingEncoding:NSUTF8StringEncoding]];

    //[[NSURLConnection alloc] initWithRequest:request delegate:self];
    [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];


    [SVProgressHUD dismissWithSuccess:@"Submission Successful"];

Answer 1

- (void)connection:(NSURLConnection*)connection didReceiveResponse:(NSURLResponse *)response
{
    NSLog(@"Did Receive Response %@", response);
    responseData = [[NSMutableData alloc]init];
}
- (void)connection:(NSURLConnection*)connection didReceiveData:(NSData*)data
{
    //NSLog(@"Did Receive Data %@", data);
    [responseData appendData:data];
}
- (void)connection:(NSURLConnection*)connection didFailWithError:(NSError*)error
{
    NSLog(@"Did Fail");
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    NSLog(@"Did Finish");
    // Do something with responseData
}