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POSend objects between Client and server android
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copied!<p>i am trying to make an client server app . I have made the hole connection and it works fine. My server runs t my PC and my Client to my android mobile phone.I want to send and receive objects from client to server , i have made the server send objects but i do not know how to receive them in my client. My object class is PacketManager.</p> <p>public class PacketManager implements Serializable {</p> <pre><code>public String choise; public int amount; //Constructor PacketManager(String ep,int p){ choise=ep; amount=p; } </code></pre> <p>}</p> <p>And my MainActivity :</p> <p>public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main);</p> <pre><code> arrayList = new ArrayList<String>(); mList = (ListView)findViewById(R.id.list); mAdapter = new MyCustomAdapter(this, arrayList); mList.setAdapter(mAdapter); // connect to the server new connectTask().execute(""); } public class connectTask extends AsyncTask<String,String,TCPClient> { @Override protected TCPClient doInBackground(String... message) { //we create a TCPClient object and mTcpClient = new TCPClient(new TCPClient.OnMessageReceived() { @Override //here the messageReceived method is implemented public void messageReceived(String message) { //this method calls the onProgressUpdate publishProgress(message); } }); mTcpClient.run(); return null; } @Override protected void onProgressUpdate(String... values) { super.onProgressUpdate(values); //in the arrayList we add the messaged received from server arrayList.add(values[0]); // notify the adapter that the data set has changed. This means that new message received // from server was added to the list mAdapter.notifyDataSetChanged(); } } } </code></pre> <p>Finally my client class : </p> <p>PrintWriter out; BufferedReader in;</p> <pre><code>public TCPClient(OnMessageReceived listener) { mMessageListener = listener; } /** * Sends the message entered by client to the server * @param message text entered by client */ public void sendMessage(String message){ if (out != null && !out.checkError()) { out.println(message); out.flush(); } } public void stopClient(){ mRun = false; } public void run() { mRun = true; try { //here you must put your computer's IP address. InetAddress serverAddr = InetAddress.getByName(SERVERIP); Log.e("TCP Client", "C: Connecting..."); //create a socket to make the connection with the server Socket socket = new Socket(serverAddr, SERVERPORT); try { //send the message to the server out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())), true); Log.e("TCP Client", "C: Sent."); Log.e("TCP Client", "C: Done."); //receive the message which the server sends back in = new BufferedReader(new InputStreamReader(socket.getInputStream())); //in this while the client listens for the messages sent by the server while (mRun) { serverMessage = in.readLine(); if (serverMessage != null && mMessageListener != null) { //call the method messageReceived from MyActivity class mMessageListener.messageReceived(serverMessage); } serverMessage = null; } Log.e("RESPONSE FROM SERVER", "S: Received Message: '" + serverMessage + "'"); } catch (Exception e) { Log.e("TCP", "S: Error", e); } finally { //the socket must be closed. It is not possible to reconnect to this socket // after it is closed, which means a new socket instance has to be created. socket.close(); } } catch (Exception e) { Log.e("TCP", "C: Error", e); } } //Declare the interface. The method messageReceived(String message) will must be implemented in the MyActivity //class at on asynckTask doInBackground public interface OnMessageReceived { public void messageReceived(String message); } </code></pre> <p>}</p> <p>Can Anyone help me with this problem , alla the connection works fine but i want to receive the Pack object from the server but i do not know the way. I have try to change the type of public void messageReceived(String message) to public void messageReceived(PackageManager Pack) but then i have proble with protected TCPClient doInBackground(String... message) and protected void onProgressUpdate(String... values). </p> <p>Server code</p> <pre><code>enter code here public TCPServer(OnMessageReceived messageListener) { this.messageListener = messageListener; public void sendMessage(String message) throws IOException{ if (mOut != null && !mOut.checkError()) { mOut.println(message); mOut.flush(); } }@Override public void run() { super.run(); running = true;try {System.out.println("S: Connecting..."); //create a server socket. A server socket waits for requests to come in over the network. ServerSocket serverSocket = new ServerSocket(SERVERPORT); //create client socket... the method accept() listens for a connection to be made to this socket and accepts it. Socket client = serverSocket.accept(); System.out.println("S: Receiving..."); try {//sends the message to the client mOut = new PrintWriter(new BufferedWriter(new OutputStreamWriter(client.getOutputStream())), true); //read the message received from client BufferedReader in = new BufferedReader(new InputStreamReader(client.getInputStream())); //in this while we wait to receive messages from client (it's an infinite loop) //this while it's like a listener for messages while (running) { String message = in.readLine(); if (message != null && messageListener != null) { //call the method messageReceived from ServerBoard class messageListener.messageReceived(message); } }catch (Exception e) { System.out.println("S: Error"); e.printStackTrace(); } finally { client.close(); System.out.println("S: Done."); } } catch (Exception e) { System.out.println("S: Error"); e.printStackTrace(); } } //Declare the interface. The method messageReceived(String message) will must be implemented in the ServerBoard //class at on startServer button click public interface OnMessageReceived { public void messageReceived(String message); } </code></pre>

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