How to send a JSON object over HttpClient Request with Android?

Question

I want to send the JSON text {} to a web service and read the response. How can I do this from android? What are the steps such as creating request object, setting content headers, etc.

My code is here

public void postData(String result,JSONObject obj) {
    // Create a new HttpClient and Post Header
    HttpClient httpclient = new DefaultHttpClient();
    HttpParams myParams = new BasicHttpParams();
    HttpConnectionParams.setConnectionTimeout(myParams, 10000);
    HttpConnectionParams.setSoTimeout(myParams, 10000);

    String json=obj.toString();

    try {

        HttpPost httppost = new HttpPost(result.toString());
        StringEntity se = new StringEntity(obj.toString()); 
        se.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
        httppost.setEntity(se); 

        HttpResponse response = httpclient.execute(httppost);
        String temp = EntityUtils.toString(response.getEntity());
        Log.i("tag", temp);


    } catch (ClientProtocolException e) {

    } catch (IOException e) {
    }
}

what mistake i have done plz correct me because it shows me an bad request error but when i do post in poster it shows me status as Successfull 200 ok

Answer 1

I do this with

httppost.setHeader("Content-type", "application/json");

Also, the new HttpPost() takes the web service URL as argument.