Android socket receive data
18,551
class Client extends Thread {
public void run()
{
try
{
Socket socket = new Socket(address, PORT);
PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
out.println(json);
BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
String response = in.readLine()
Toast.makeText(MainActivity.this, response, Toast.LENGTH_SHORT).show();
socket.close();
}
catch(Exception e) {}
}
}
Comments
-
gematzab almost 2 years
I am new with android development so if any further information needed plz ask... I am trying to use sockets to send coordinates to server, receive query results and "Toast" them. Until now in my activity:
@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_socket); new Thread(new ClientThread()).start(); } ... class ClientThread implements Runnable { @SuppressWarnings("deprecation") @Override public void run() { try { InetAddress serverAddr = InetAddress.getByName(SERVER_IP); socket = new Socket(serverAddr, SERVERPORT); } catch (UnknownHostException e1) { e1.printStackTrace(); } catch (IOException e1) { e1.printStackTrace(); } } } public void onClickk(View view) { try { // Acquire a reference to the system Location Manager LocationManager lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);............here some more code regarding coordinates. ............
And I am writing through the socket the coordinates (in the same method):
lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener); if (lat!=null){ String json = ""; // 3. build jsonObject JSONObject jsonObject = new JSONObject(); try { jsonObject.accumulate("lat", lat); jsonObject.accumulate("lon", lon); } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } // 4. convert JSONObject to JSON to String json = jsonObject.toString(); PrintWriter out = new PrintWriter(new BufferedWriter( new OutputStreamWriter(socket.getOutputStream())), true); out.println(json);
How I can receive data sent from the server? I am not sure how to use the InputSteam.
UPDATE: My server. WHen a message is received from the app the server tries to write a string on the socket.
sock.on('data', function(data) { console.log('DATA ' + sock.remoteAddress + ': ' + data); sock.write(la); }); });