مشکل کرش در کار با dataoutputstream 

با سلام 

مشابه اپ آموزش چت داخل شبکه دارم کار میکنم ولی دکمه send رو که میزنم کرش میکنه. پرمیژن های مربوط به منیفست رو هم اضافه کردم.

 
 final Thread thread = new Thread(new Runnable() {
 @Override
 public void run() {

 try {
 log("Connecting...");
 //log("Try IP: " + ip);
 txt_ip.setText(ip);
 //socket = new Socket();
 //socket.connect(new InetSocketAddress(ip, 9000));
 socket = new Socket(ip,9000);

 log("Connected!");


 outputStream = new DataOutputStream(socket.getOutputStream());
 inputStream = new BufferedReader(new InputStreamReader(socket.getInputStream()));
 //String user = txt_user.getText().toString();
 //pass = user+txt_pass.getText().toString();
 //outputStream.write(pass.getBytes());
 //log(outputStream.toString());
 log("BUffers initialazed");
 outputStream.write("hi server\n".getBytes());
 /*while (true) {
 String message = inputStream.readLine();
 log(message);
 }*/
 //log(outputStream.toString());
 log("After outputstream");
 outputStream.close();


 }
 catch (IOException e) {
 log("Not Connected!");
 }
 }
 });
 btn_send.setOnClickListener(new View.OnClickListener() {

 @Override

 public void onClick(View v) {
 txt_ip.setText(ip);
 log(txt_user.getText().toString());

 if (outputStream == null) {
 log("out is null");
 return;
 }
 log("till try");
 try {
 //String message = pass + "\n";
 String message2 = "sent to server\n"; //txt_user.getText().toString()+ "\n";
 outputStream.write(message2.getBytes());
 outputStream.close();
 } catch (IOException e) {
 log("os erro");
 e.printStackTrace();
 }
 }
 });


 thread.start();

 }