Bluetooth app

Hi!
I have some problems with my bluetooth app. I made the setup for a bluetooth server on a raspberry pi and i was able to send data to it with my app, but I don't know how to receive data from the server. The server works properly, I tried with the BlueTerm 2 app and I can receive data from it. Can someone help me to implement the receiver in my app?
My code below:

Code (Text):

1. package com.example.bluetooth1;
2.  
3. import java.io.IOException;
4. import java.io.OutputStream;
5. import java.lang.reflect.Method;
6. import java.util.UUID;
7. import com.example.bluetooth1.R;
8. import android.app.Activity;
9. import android.bluetooth.BluetoothAdapter;
10. import android.bluetooth.BluetoothDevice;
11. import android.bluetooth.BluetoothSocket;
12. import android.content.Intent;
13. import android.os.Build;
14. import android.os.Bundle;
15. import android.util.Log;
16. import android.view.View;
17. import android.view.View.OnClickListener;
18. import android.widget.Button;
19. import android.widget.Toast;
20. public class MainActivity extends Activity {
21.   private static final String TAG = "bluetooth1";
22.  
23.   Button btnOn, btnOff;
24.  
25.   private BluetoothAdapter btAdapter = null;
26.   private BluetoothSocket btSocket = null;
27.   private OutputStream outStream = null;
28.  
29.   // SPP UUID service
30.   private static final UUID MY_UUID = UUID.fromString("94f39d29-7d6d-437d-973b-fba39e49d4ee");
31.   // MAC-address of Bluetooth module (you must edit this line)
32.   private static String address = "00:1A:7D:DA:71:14";
33.  
34.   /** Called when the activity is first created. */
35.   @Override
36.   public void onCreate(Bundle savedInstanceState) {
37.     super.onCreate(savedInstanceState);
38.     setContentView(R.layout.activity_main);
39.     btnOn = (Button) findViewById(R.id.btnOn);
40.     btnOff = (Button) findViewById(R.id.btnOff);
41.    
42.     btAdapter = BluetoothAdapter.getDefaultAdapter();
43.     checkBTState();
44.     btnOn.setOnClickListener(new OnClickListener() {
45.       public void onClick(View v) {
46.         sendData("esti un prost");
47.         //Toast.makeText(getBaseContext(), "Turn on LED", Toast.LENGTH_SHORT).show();
48.       }
49.     });
50.     btnOff.setOnClickListener(new OnClickListener() {
51.       public void onClick(View v) {
52.         sendData("cel mai prost");
53.        // Toast.makeText(getBaseContext(), "Turn off LED", Toast.LENGTH_SHORT).show();
54.       }
55.     });
56.   }
57.  
58.   private BluetoothSocket createBluetoothSocket(BluetoothDevice device) throws IOException {
59.       if(Build.VERSION.SDK_INT >= 10){
60.           try {
61.               final Method  m = device.getClass().getMethod("createInsecureRfcommSocketToServiceRecord", new Class[] { UUID.class });
62.               return (BluetoothSocket) m.invoke(device, MY_UUID);
63.           } catch (Exception e) {
64.               Log.e(TAG, "Could not create Insecure RFComm Connection",e);
65.           }
66.       }
67.       return  device.createRfcommSocketToServiceRecord(MY_UUID);
68.   }
69.  
70.   @Override
71.   public void onResume() {
72.     super.onResume();
73.  
74.     // Set up a pointer to the remote node using it's address.
75.     BluetoothDevice device = btAdapter.getRemoteDevice(address);
76.     try {
77.         btSocket = createBluetoothSocket(device);
78.     } catch (IOException e1) {
79.         errorExit("Fatal Error", "In onResume() and socket create failed: " + e1.getMessage() + ".");
80.     }
81.    
82.  
83.     btAdapter.cancelDiscovery();
84.     try {
85.       btSocket.connect();
86.     } catch (IOException e) {
87.       try {
88.         btSocket.close();
89.       } catch (IOException e2) {
90.       }
91.     }
92.  
93.     try {
94.       outStream = btSocket.getOutputStream();
95.     } catch (IOException e) {
96.       errorExit("Fatal Error", "In onResume() and output stream creation failed:" + e.getMessage() + ".");
97.     }
98.   }
99.  
100.  
101.   private void checkBTState() {
102.     // Check for Bluetooth support and then check to make sure it is turned on
103.     // Emulator doesn't support Bluetooth and will return null
104.     if(btAdapter==null) {
105.       errorExit("Fatal Error", "Bluetooth not support");
106.     } else {
107.       if (btAdapter.isEnabled()) {
108.         Log.d(TAG, "...Bluetooth ON...");
109.       } else {
110.         //Prompt user to turn on Bluetooth
111.         Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
112.         startActivityForResult(enableBtIntent, 1);
113.       }
114.     }
115.   }
116.   private void errorExit(String title, String message){
117.     Toast.makeText(getBaseContext(), title + " - " + message, Toast.LENGTH_LONG).show();
118.     finish();
119.   }
120.   private void sendData(String message) {
121.     byte[] msgBuffer = message.getBytes();
122.  
123.     try {
124.       outStream.write(msgBuffer);
125.     } catch (IOException e) {
126.       String msg = "In onResume() and an exception occurred during write: " + e.getMessage();
127.       if (address.equals("00:00:00:00:00:00"))
128.         msg = msg + ".\n\nUpdate your server address from 00:00:00:00:00:00 to the correct address on line 35 in the java code";
129.           msg = msg +  ".\n\nCheck that the SPP UUID: " + MY_UUID.toString() + " exists on server.\n\n";
130.      
131.           errorExit("Fatal Error", msg);      
132.     }
133.   }
134. }
135.  
136.