ios - 在 Objective C 中形成 JSON 数据请求

Question

我必须发送以下 JSON 数据以请求 Web 服务。那么如何使用 iOS/objective C 创建以下类型的 JSON:

{
"version": "1.0",
"myData": [
    {
        "name": "",
        "value": [
            {
                "time": "1-JAN-2013 14:30:00 IST",
                "values": [
                    {
                        "name": "",
                        "value": ""
                    }
                ]
            }]
    }]
}

我试过了:

NSDictionary* version = [NSDictionary dictionaryWithObjectsAndKeys:
  [1.0 objectForKey:@"version"], [NSArray objectForKey:@"observations"]  

我错过了什么吗？

Answer 1

试试这个我正在使用下面的方法

NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dict
                                                   options:NSJSONWritingPrettyPrinted
                                                     error:&error];
NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];

NSMutableURLRequest* request = [[NSMutableURLRequest alloc] init] ;
receivedData = [[NSMutableData alloc] initWithLength:0];
[request setURL:url];
[request setHTTPMethod:@"POST"];
[request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:[jsonString dataUsingEncoding:NSUTF8StringEncoding]];
NSURLConnection *connection= [[NSURLConnection alloc]initWithRequest:request delegate:self];

[connection start];