Java tutorial
//package com.java2s; import android.net.Uri; import android.util.Log; import org.json.JSONObject; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.OutputStreamWriter; import java.net.HttpURLConnection; import java.net.URL; public class Main { private static String IP_ADDRESS = "192.168.43.235"; public static String UdatePlayerBT(String userName, String device) { String retStr = ""; try { URL url = new URL("http://" + IP_ADDRESS + "/RiddleQuizApp/ServerSide/PostaviBTdevice.php"); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setConnectTimeout(15000); conn.setReadTimeout(10000); conn.setRequestMethod("POST"); conn.setDoInput(true); conn.setDoOutput(true); Log.e("http", "por1"); JSONObject data = new JSONObject(); data.put("username", userName); data.put("bt_device", device); Log.e("http", "por3"); Uri.Builder builder = new Uri.Builder().appendQueryParameter("action", data.toString()); String query = builder.build().getEncodedQuery(); Log.e("http", "por4"); OutputStream os = conn.getOutputStream(); BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(os, "UTF-8")); bw.write(query); Log.e("http", "por5"); bw.flush(); bw.close(); os.close(); int responseCode = conn.getResponseCode(); Log.e("http", String.valueOf(responseCode)); if (responseCode == HttpURLConnection.HTTP_OK) { retStr = inputStreamToString(conn.getInputStream()); } else retStr = String.valueOf("Error: " + responseCode); Log.e("http", retStr); } catch (Exception e) { Log.e("http", "greska"); } return retStr; } private static String inputStreamToString(InputStream is) { String line = ""; StringBuilder total = new StringBuilder(); BufferedReader bf = new BufferedReader(new InputStreamReader(is)); try { while ((line = bf.readLine()) != null) { total.append(line); } } catch (Exception e) { e.printStackTrace(); } return total.toString(); } }