Java tutorial
/*** Copyright (c) 2009 Author: Stefan Klumpp <stefan.klumpp@gmail.com> Web: http://stefanklumpp.com Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ package com.devstream.http; import org.json.JSONException; import org.json.JSONObject; import android.app.Activity; import android.os.Bundle; import android.util.Log; public class MainActivity extends Activity { private static final String TAG = "MainActivity"; private static final String URL = "http://www.yourdomain.com:80"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // JSON object to hold the information, which is sent to the server JSONObject jsonObjSend = new JSONObject(); try { // Add key/value pairs jsonObjSend.put("key_1", "value_1"); jsonObjSend.put("key_2", "value_2"); // Add a nested JSONObject (e.g. for header information) JSONObject header = new JSONObject(); header.put("deviceType", "Android"); // Device type header.put("deviceVersion", "2.0"); // Device OS version header.put("language", "es-es"); // Language of the Android client jsonObjSend.put("header", header); // Output the JSON object we're sending to Logcat: Log.i(TAG, jsonObjSend.toString(2)); } catch (JSONException e) { e.printStackTrace(); } // Send the HttpPostRequest and receive a JSONObject in return JSONObject jsonObjRecv = HttpClient.SendHttpPost(URL, jsonObjSend); /* * From here on do whatever you want with your JSONObject, e.g. * 1) Get the value for a key: jsonObjRecv.get("key"); * 2) Get a nested JSONObject: jsonObjRecv.getJSONObject("key") * 3) Get a nested JSONArray: jsonObjRecv.getJSONArray("key") */ } }