post json ios

   first method:
        NSMutableDictionary * parserdic=[[NSMutableDictionary alloc]initWithObjectsAndKeys:[[NSUserDefaults standardUserDefaults]stringForKey:@"ContactNo"],@"SCMobileNo",valid,@"Reply",textfield.text,@"CustomerName",pickerviewtext,@"Model",mobilenum.text,@"CustomerMobileNo", nil];


        NSError *error = nil;
        NSData *jsonInputData = [NSJSONSerialization dataWithJSONObject:parserdic options:NSJSONWritingPrettyPrinted error:&error];
        NSString *jsonInputString = [[NSString alloc] initWithData:jsonInputData encoding:NSUTF8StringEncoding];


        NSURL *url = [NSURL URLWithString:@"http://192.168.1.230:881/Service1.svc/IVRSReply"];
        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
        [request setHTTPMethod:@"POST"];
        [request setValue:@"application/json; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
        [request setHTTPBody:[jsonInputString dataUsingEncoding:NSUTF8StringEncoding]];
        NSURLResponse *response;
        NSError *err;
        NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err];

        id jsonResponseData = [NSJSONSerialization JSONObjectWithData:responseData options:kNilOptions error:nil];

        NSDictionary *jsonResponseDict;
        if ([jsonResponseData isKindOfClass:[NSDictionary class]]) {
            jsonResponseDict = jsonResponseData;
        } else {
            // Error-handling code
        }
        jsonResponseData = [jsonResponseDict objectForKey:@"d"];
        if (jsonResponseData == nil) {
            // Server may have returned a response containing an error
            // The "ExceptionType" value is returned from my .NET server used in sample
            id jsonExceptioTypeData = [jsonResponseDict objectForKey:@"ExceptionType"];
            if (jsonExceptioTypeData != nil) {
                NSLog(@"%s ERROR : Server returned an exception", __func__);
                NSLog(@"%s ERROR : Server error details = %@", __func__, jsonResponseDict);
            }
        }

2nd method :

	 NSURL *url = [NSURL URLWithString:[[NSString alloc] initWithFormat:@"http://mydomain.com/check.php"]];
    //    NSString *jsonRequest = @"{ :"james","password":"james1234"}";
        NSMutableString *jsonRequest=
        NSData *requestData = [NSData dataWithBytes:[jsonRequest UTF8String] length:[jsonRequest length]];
        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];

        [request setHTTPMethod:@"POST"];
        [request setHTTPBody:requestData];
        [request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
        [request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
        [request setValue:[NSString stringWithFormat:@"%d",[requestData length]] forHTTPHeaderField:@"Content-Length"];
        */
3rd method:

	//    NSString * kposturl=@"http://192.168.1.230:881/Service1.svc/IVRSReply";
   //   NSMutableString *poststring=[NSMutableString stringWithString:kposturl];
    //   NSURL *url=[NSURL URLWithString:poststring];

     //  NSMutableURLRequest *theRequest=[NSMutableURLRequest
       //                                  requestWithURL:[NSURL URLWithString:
        //                                                 kposturl]
        //                                 cachePolicy:NSURLRequestUseProtocolCachePolicy
         //                                timeoutInterval:60.0];
// NSDictionary* jsonDictionary = [NSDictionary dictionaryWithObjectsAndKeys:[[NSUserDefaults standardUserDefaults]stringForKey:@"ContactNO"], @"SCMobileNo",
                                 //       valid, @"Reply",textfield.text,@"CustomerName",pickerviewtext,@"Model",mobilenum.text,@"CustomerMobileNo",
                                 //       nil];
      //  NSError *error;
      //  NSData* jsonData = [NSJSONSerialization dataWithJSONObject:jsonDictionary
                                                         //  options:NSJSONWritingPrettyPrinted error:&error];
      //  [theRequest setHTTPMethod:@"POST"];
      //  [theRequest addValue:@"application/json" forHTTPHeaderField:@"Content-Type"];

        // should check for and handle errors here but we aren't
      //  [theRequest setHTTPBody:jsonData];
4th method :

   /*  NSString * kposturl=@"http://192.168.1.230:881/Service1.svc/IVRSReply";
        NSMutableString *poststring=[NSMutableString stringWithString:kposturl];
        NSURL *url=[NSURL URLWithString:poststring];

       ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
    //  [request addRequestHeader:@"User-Agent" value:@"ASIHTTPRequest"];
        [request setRequestMethod:@"POST"];
       [request setPostValue:[[NSUserDefaults standardUserDefaults]stringForKey:@"ContactNO"] forKey:@"SCMobileNo"];

       [request setPostValue:valid forKey:@"Reply"];
       [request setPostValue:textfield.text forKey:@"CustomerName"];
        [request setPostValue:pickerviewtext forKey:@"Model"];
       [request setPostValue:mobilenum.text forKey:@"CustomerMobileNo"];

        [request setDelegate:self];
       [request startAsynchronous];
          [request setDidFinishSelector:@selector(requestCompleted:)]; */