3 Answers

• A good way to start is posting your code here, may be you are missing the parameters.

• var xhr = Titanium.Network.createHTTPClient();
  xhr.onerror = xhrOnError;  //xhr_onError function working 
  xhr.onload = function() {
          Ti.API.info(this.responseText);
          Ti.API.info(this.status);
          if(this.status == 200) {
              Ti.API.info('Getting back: ' + this.responseText);
          } else {
              Ti.UI.createAlertDialog({
                  title:'Sorry',
                  message:'Please try again.'
              }).show();
          }
      };
  
    Ti.API.info("sending: " + jsonData);
  
    xhr.open('POST', 'http://someurl.com/index.php'); // index.php is just print_r($_POST) or print_r($_REQUEST)
    xhr.setRequestHeader('Content-Type', 'application/json');
    xhr.setRequestHeader('Accept', 'application/json');
    xhr.send(jsonData);
  

• The example shown should work fine. Check that you got Internet connectivity..