I am trying to send data using NXJ and Android Bluetooth

Question

I am doing something with NXT and Android APP, but it is not easy.

I managed to connect an NXJ and an Android device, but no data was sent.

I am trying to send data from Android to NXT.

First I got the code for the Android app:

public void writeMessage(byte msg, String nxt) throws InterruptedException{ BluetoothSocket connSock; //Swith nxt socket if(nxt.equals("nxt1")){ connSock=socket_nxt1; }else{ connSock=null; Log.d("write","Err"); } if(connSock!=null){ try { OutputStreamWriter out = new OutputStreamWriter(connSock.getOutputStream()); out.write(msg); out.flush(); Thread.sleep(1000); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } }else{ //Error Log.d("write","Err"); } } 

And this is for NXT:

 while(true){ LCD.drawString(waiting,0,0); LCD.refresh(); BTConnection btc = Bluetooth.waitForConnection(); LCD.clear(); LCD.drawString(connected,0,0); LCD.refresh(); DataInputStream dis = btc.openDataInputStream(); DataOutputStream dos = btc.openDataOutputStream(); for(int i=0;i<1;i++) { byte n = dis.readByte(); LCD.drawInt(n,0,1); LCD.refresh(); dos.writeInt(-n); dos.flush(); } dis.close(); dos.close(); Thread.sleep(1000); // wait for data to drain LCD.clear(); LCD.drawString(closing,0,0); LCD.refresh(); btc.close(); LCD.clear(); }