Here is the code that i wrote to connect with printer socket.
I hope u will reply me ASAP,bcz i have to release my application.
package com.ob;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.util.Iterator;
import java.util.Set;
import java.util.UUID;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.app.AlertDialog.Builder;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothServerSocket;
import android.bluetooth.BluetoothSocket;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.DialogInterface.OnCancelListener;
import android.os.Bundle;
import android.util.Log;
public class BluetoothPaired extends Activity {
private static final int REQUEST_ENABLE_BT = 2;
private BluetoothAdapter bluetoothAdapter;
private UUID applicationUUID = java.util.UUID.randomUUID();
private static final String logTag = "BluetoothTest";
boolean rePrintFlag;
int offenceCount = 0;
int licOffenceCount = 0;
static int dataSize;
int status = 0x00;
static int[] dataPacket = new int[2000];
String chain="\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
String key = "ranjeetkumar1984";
char[] szEncData = new char[16];
public static DataOutputStream dos = null;
String Devicesfound =null;
UUID MY_UUID=null;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (bluetoothAdapter == null) {
Log.d(logTag, "Could not get bluetooth adapter");
return;
}
searchForDevices();
}
@Override
protected void onActivityResult(int requestCode, int resultCode,
Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_ENABLE_BT) {
if (requestCode == RESULT_OK) {
Log.d("BluetoothTest", "bluetooth enabled");
searchForDevices();
} else {
Log.d("BluetoothTest", "Could not enable bluetooth
device");
}
}
}
public void lineReadFromBluetoothDevice(String line) {
Log.d(logTag, "Mottok: " + line);
}
private void searchForDevices() {
Intent discoverableIntent = new
Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION,
300);
startActivity(discoverableIntent);
bluetoothAdapter.startDiscovery();
if (bluetoothAdapter.isEnabled()) {
Set<BluetoothDevice> devicesAvailable =
bluetoothAdapter.getBondedDevices();
System.out.println("set of devices available
=========="+devicesAvailable);
if(devicesAvailable.size() >0)
{
for ( BluetoothDevice device : devicesAvailable) {
Devicesfound +=device.getAddress()+"~";
System.out.println("=============="+device.getName()+"
"+device.getAddress()+"\n");
}
}
if (devicesAvailable.isEmpty()) {
informUserNoDevicesPaired();
} else {
askUserToPickDeviceToUse(devicesAvailable);
}
} else {
Intent enableBtIntent = new
Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
}
}
private void askUserToPickDeviceToUse(Set<BluetoothDevice>
devicesAvailable) {
for (Iterator iterator = devicesAvailable.iterator();
iterator.hasNext();) {
BluetoothDevice bluetoothDevice = (BluetoothDevice)
iterator.next();
if(bluetoothDevice.getAddress().equalsIgnoreCase("00:0A:3A:
74:61:4A"))
{
pairToDevice((BluetoothDevice)bluetoothDevice );
}
}
}
private void informUserNoDevicesPaired() {
Builder dialogBuilder = new AlertDialog.Builder(this);
dialogBuilder.setMessage("No user device paired");
dialogBuilder.setPositiveButton("Ok", new
DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int arg1) {
dialog.dismiss();
}
});
dialogBuilder.setOnCancelListener(new OnCancelListener() {
public void onCancel(DialogInterface dialog) {
dialog.dismiss();
finish();
}
});
dialogBuilder.show();
}
private void showError(String message) {
Builder dialogBuilder = new AlertDialog.Builder(this);
dialogBuilder.setMessage("Error" + message);
dialogBuilder.setOnCancelListener(new OnCancelListener() {
public void onCancel(DialogInterface dialog) {
dialog.dismiss();
finish();
}
});
dialogBuilder.show();
}
private void pairToDevice(BluetoothDevice bluetoothDevice) {
System.out.println("Socket opening for sending data");
openSocket(bluetoothDevice);
}
private void openSocket(BluetoothDevice bluetoothDevice) {
try {
final ProgressDialog dialog = new ProgressDialog(this);
final ConnectRunnable connector = new
ConnectRunnable(bluetoothDevice, dialog);
/* dialog.show(this, "Connecting to device ::::\n" +
bluetoothDevice.getName() + " : " + bluetoothDevice.getAddress(),"",
true, true,
new OnCancelListener() {
public void onCancel(DialogInterface dialog) {
connector.cancel();
}
});
*/
new Thread(connector).start();
} catch (IOException ex) {
Log.d(logTag, "Could not open bluetooth socket", ex);
showError("Kunne ikke åpne socket grunnet feil: " +
ex.getMessage());
}
}
private void closeSocket(BluetoothSocket openSocket) {
try {
openSocket.close();
} catch (IOException ex) {
Log.d(logTag, "Could not close exisiting socket", ex);
}
}
private void startListeningForInput(BluetoothSocket socket) {
System.out.println("In startListeningForInput method=============");
new Thread(new InputReader(socket)).start();
}
private void dismissDialog(final Dialog dialog) {
runOnUiThread(new Runnable() {
public void run() {
dialog.dismiss();
}
});
}
private class ConnectRunnable implements Runnable {
private final ProgressDialog dialog;
private final BluetoothSocket socket;
public ConnectRunnable(BluetoothDevice device, ProgressDialog
dialog) throws IOException {
System.out.println("Creating new socket=============");
MY_UUID =
UUID.fromString("00001101-0000-1000-8000-00805F73648E");
socket = device.createRfcommSocketToServiceRecord(MY_UUID);
socket.getInputStream();
System.out.println("device ================="+device+"
"+socket.getInputStream());
this.dialog = dialog;
}
public void run() {
System.out.println("Connecting to new
socket=============");
BluetoothDevice btdevice=socket.getRemoteDevice();
System.out.println("Remote device
==========="+socket.getRemoteDevice());
try {
socket.connect();
} catch (IOException connectException) {
Log.d(logTag, "Could not connect to socket",
connectException);
closeSocket(socket);
return;
}
bluetoothAdapter.cancelDiscovery();
startListeningForInput(socket);
dismissDialog(dialog);
}
public void cancel() {
try {
socket.close();
} catch (IOException e) {
Log
Thanks in advance.
On Jun 18, 10:28 pm, Rocky <[email protected]> wrote:
> You need CS architecture, post the code, then we can understand where is the
> exact problem.
>
>
>
>
>
>
>
>
>
> On Sat, Jun 18, 2011 at 7:37 PM, ABS <[email protected]> wrote:
> > Hello everyone,
> > I am new on android platform, working on one traffic
> > control app. In this app i have to connect with bluetooth printer
> > through android device, i am trying to do this connection with
> > Bluetooth socket.
> > But problem is that i am getting IOexception while
> > connecting with printer socket.
>
> > Just i have to send data to print,Do i need to use Server and client
> > architecture?
>
> > exception is as follows
>
> > 06-18 19:15:56.943: DEBUG/BluetoothTest(17386): java.io.IOException:
> > Service discovery failed
> > 06-18 19:15:56.943: DEBUG/BluetoothTest(17386): at
> > android.bluetooth.BluetoothSocket$SdpHelper.doSdp(BluetoothSocket.java:
> > 383)
> > 06-18 19:15:56.943: DEBUG/BluetoothTest(17386): at
> > android.bluetooth.BluetoothSocket.connect(BluetoothSocket.java:193)
> > 06-18 19:15:56.943: DEBUG/BluetoothTest(17386): at
> > com.ob.BluetoothPaired$ConnectRunnable.run(BluetoothPaired.java:236)
> > 06-18 19:15:56.943: DEBUG/BluetoothTest(17386): at
> > java.lang.Thread.run(Thread.java:1096)
>
> > I stuck there if anyone know solution reply me ASAP
>
> > thanks in advance
>
> > --
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>
> --
> Thanks & Regards
>
> Rakesh Kumar Jha
> Software Developer
> Symphony Services Corp (India) Pvt Ltd
> Bangalore
> (O) +918030274295
> (R) +919886336619
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