Format du texte dans une imprimante bluetooth

en fait, j'ai à mettre en œuvre un module qui se connectent à un BT termical imprimante et d'impression. J'ai un simple, mais fonctionnellement exemple, il fonctionne avec l'imprimante. Le problème est que ces textes sont imprimés en texte brut, et je dois lui donner le format, les caractères en gras, changer la taille de la police et d'autres... Comment puis-je faire??. Je ne sais pas comment... je utiliser cette Classe:

/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.edec.aptr;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.UUID;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothServerSocket;
import android.bluetooth.BluetoothSocket;
import android.content.Context;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
/**
* This class does all the work for setting up and managing Bluetooth
* connections with other devices. It has a thread that listens for incoming
* connections, a thread for connecting with a device, and a thread for
* performing data transmissions when connected.
*/
public class BluetoothService {
//Debugging
private static final String TAG = "BluetoothService";
private static final boolean D = true;
//Name for the SDP record when creating server socket
private static final String NAME = "BTPrinter";
//Unique UUID for this application
private static final UUID MY_UUID = UUID
.fromString("00001101-0000-1000-8000-00805F9B34FB"); //change by
//chongqing
//jinou
//Member fields
private final BluetoothAdapter mAdapter;
private final Handler mHandler;
private AcceptThread mAcceptThread;
private ConnectThread mConnectThread;
private ConnectedThread mConnectedThread;
private int mState;
//Constants that indicate the current connection state
public static final int STATE_NONE = 0; //we're doing nothing
public static final int STATE_LISTEN = 1; //now listening for incoming
//connections
public static final int STATE_CONNECTING = 2; //now initiating an outgoing
//connection
public static final int STATE_CONNECTED = 3; //now connected to a remote
//device
/**
* Constructor. Prepares a new BTPrinter session.
* 
* @param context
*            The UI Activity Context
* @param handler
*            A Handler to send messages back to the UI Activity
*/
public BluetoothService(Context context, Handler handler) {
mAdapter = BluetoothAdapter.getDefaultAdapter();
mState = STATE_NONE;
mHandler = handler;
}
/**
* Set the current state of the connection
* 
* @param state
*            An integer defining the current connection state
*/
private synchronized void setState(int state) {
if (D)
Log.d(TAG, "setState() " + mState + " -> " + state);
mState = state;
//Give the new state to the Handler so the UI Activity can update
mHandler.obtainMessage(amarre.MESSAGE_STATE_CHANGE, state, -1)
.sendToTarget();
}
/**
* Return the current connection state.
*/
public synchronized int getState() {
return mState;
}
/**
* Start the service. Specifically start AcceptThread to begin a session in
* listening (server) mode. Called by the Activity onResume()
*/
public synchronized void start() {
if (D)
Log.d(TAG, "start");
//Cancel any thread attempting to make a connection
if (mConnectThread != null) {
mConnectThread.cancel();
mConnectThread = null;
}
//Cancel any thread currently running a connection
if (mConnectedThread != null) {
mConnectedThread.cancel();
mConnectedThread = null;
}
//Start the thread to listen on a BluetoothServerSocket
if (mAcceptThread == null) {
mAcceptThread = new AcceptThread();
mAcceptThread.start();
}
setState(STATE_LISTEN);
}
/**
* Start the ConnectThread to initiate a connection to a remote device.
* 
* @param device
*            The BluetoothDevice to connect
*/
public synchronized void connect(BluetoothDevice device) {
if (D)
Log.d(TAG, "connect to: " + device);
//Cancel any thread attempting to make a connection
if (mState == STATE_CONNECTING) {
if (mConnectThread != null) {
mConnectThread.cancel();
mConnectThread = null;
}
}
//Cancel any thread currently running a connection
if (mConnectedThread != null) {
mConnectedThread.cancel();
mConnectedThread = null;
}
//Start the thread to connect with the given device
mConnectThread = new ConnectThread(device);
mConnectThread.start();
setState(STATE_CONNECTING);
}
/**
* Start the ConnectedThread to begin managing a Bluetooth connection
* 
* @param socket
*            The BluetoothSocket on which the connection was made
* @param device
*            The BluetoothDevice that has been connected
*/
public synchronized void connected(BluetoothSocket socket,
BluetoothDevice device) {
if (D)
Log.d(TAG, "connected");
//Cancel the thread that completed the connection
if (mConnectThread != null) {
mConnectThread.cancel();
mConnectThread = null;
}
//Cancel any thread currently running a connection
if (mConnectedThread != null) {
mConnectedThread.cancel();
mConnectedThread = null;
}
//Cancel the accept thread because we only want to connect to one
//device
if (mAcceptThread != null) {
mAcceptThread.cancel();
mAcceptThread = null;
}
//Start the thread to manage the connection and perform transmissions
mConnectedThread = new ConnectedThread(socket);
mConnectedThread.start();
//Send the name of the connected device back to the UI Activity
Message msg = mHandler.obtainMessage(amarre.MESSAGE_DEVICE_NAME);
Bundle bundle = new Bundle();
bundle.putString(amarre.DEVICE_NAME, device.getName());
msg.setData(bundle);
mHandler.sendMessage(msg);
setState(STATE_CONNECTED);
}
/**
* Stop all threads
*/
public synchronized void stop() {
if (D)
Log.d(TAG, "stop");
setState(STATE_NONE);
if (mConnectThread != null) {
mConnectThread.cancel();
mConnectThread = null;
}
if (mConnectedThread != null) {
mConnectedThread.cancel();
mConnectedThread = null;
}
if (mAcceptThread != null) {
mAcceptThread.cancel();
mAcceptThread = null;
}
}
/**
* Write to the ConnectedThread in an unsynchronized manner
* 
* @param out
*            The bytes to write
* @see ConnectedThread#write(byte[])
*/
public void write(byte[] out) {
//Create temporary object
ConnectedThread r;
//Synchronize a copy of the ConnectedThread
synchronized (this) {
if (mState != STATE_CONNECTED)
return;
r = mConnectedThread;
}
//Perform the write unsynchronized
r.write(out);
}
/**
* Indicate that the connection attempt failed and notify the UI Activity.
*/
private void connectionFailed() {
setState(STATE_LISTEN);
//Send a failure message back to the Activity
Message msg = mHandler.obtainMessage(amarre.MESSAGE_TOAST);
Bundle bundle = new Bundle();
bundle.putString(
amarre.TOAST,
"No se puede conectar al dispostivo, verifique que éste se encuentra encendido y cercano a la tablet");
msg.setData(bundle);
mHandler.sendMessage(msg);
}
/**
* Indicate that the connection was lost and notify the UI Activity.
*/
private void connectionLost() {
//setState(STATE_LISTEN);
//Send a failure message back to the Activity
Message msg = mHandler.obtainMessage(amarre.MESSAGE_TOAST);
Bundle bundle = new Bundle();
bundle.putString(amarre.TOAST,
"La conexión con el dispositivo se ha perdido");
msg.setData(bundle);
mHandler.sendMessage(msg);
}
/**
* This thread runs while listening for incoming connections. It behaves
* like a server-side client. It runs until a connection is accepted (or
* until cancelled).
*/
private class AcceptThread extends Thread {
//The local server socket
private final BluetoothServerSocket mmServerSocket;
public AcceptThread() {
BluetoothServerSocket tmp = null;
//Create a new listening server socket
try {
tmp = mAdapter
.listenUsingRfcommWithServiceRecord(NAME, MY_UUID);
} catch (IOException e) {
Log.e(TAG, "listen() failed", e);
}
mmServerSocket = tmp;
}
public void run() {
if (D)
Log.d(TAG, "BEGIN mAcceptThread" + this);
setName("AcceptThread");
BluetoothSocket socket = null;
//Listen to the server socket if we're not connected
while (mState != STATE_CONNECTED) {
try {
//This is a blocking call and will only return on a
//successful connection or an exception
socket = mmServerSocket.accept();
} catch (IOException e) {
Log.e(TAG, "accept() failed", e);
break;
}
//If a connection was accepted
if (socket != null) {
synchronized (BluetoothService.this) {
switch (mState) {
case STATE_LISTEN:
case STATE_CONNECTING:
//Situation normal. Start the connected thread.
connected(socket, socket.getRemoteDevice());
break;
case STATE_NONE:
case STATE_CONNECTED:
//Either not ready or already connected. Terminate
//new socket.
try {
socket.close();
} catch (IOException e) {
Log.e(TAG, "Could not close unwanted socket", e);
}
break;
}
}
}
}
if (D)
Log.i(TAG, "END mAcceptThread");
}
public void cancel() {
if (D)
Log.d(TAG, "cancel " + this);
try {
mmServerSocket.close();
} catch (IOException e) {
Log.e(TAG, "close() of server failed", e);
}
}
}
/**
* This thread runs while attempting to make an outgoing connection with a
* device. It runs straight through; the connection either succeeds or
* fails.
*/
private class ConnectThread extends Thread {
private final BluetoothSocket mmSocket;
private final BluetoothDevice mmDevice;
public ConnectThread(BluetoothDevice device) {
mmDevice = device;
BluetoothSocket tmp = null;
//Get a BluetoothSocket for a connection with the
//given BluetoothDevice
try {
tmp = device.createRfcommSocketToServiceRecord(MY_UUID);
} catch (IOException e) {
Log.e(TAG, "create() failed", e);
}
mmSocket = tmp;
}
public void run() {
Log.i(TAG, "BEGIN mConnectThread");
setName("ConnectThread");
//Always cancel discovery because it will slow down a connection
mAdapter.cancelDiscovery();
//Make a connection to the BluetoothSocket
try {
//This is a blocking call and will only return on a
//successful connection or an exception
mmSocket.connect();
} catch (IOException e) {
connectionFailed();
//Close the socket
try {
mmSocket.close();
} catch (IOException e2) {
Log.e(TAG,
"unable to close() socket during connection failure",
e2);
}
//Start the service over to restart listening mode
BluetoothService.this.start();
return;
}
//Reset the ConnectThread because we're done
synchronized (BluetoothService.this) {
mConnectThread = null;
}
//Start the connected thread
connected(mmSocket, mmDevice);
}
public void cancel() {
try {
mmSocket.close();
} catch (IOException e) {
Log.e(TAG, "close() of connect socket failed", e);
}
}
}
/**
* This thread runs during a connection with a remote device. It handles all
* incoming and outgoing transmissions.
*/
private class ConnectedThread extends Thread {
private final BluetoothSocket mmSocket;
private final InputStream mmInStream;
private final OutputStream mmOutStream;
public ConnectedThread(BluetoothSocket socket) {
Log.d(TAG, "create ConnectedThread");
mmSocket = socket;
InputStream tmpIn = null;
OutputStream tmpOut = null;
//Get the BluetoothSocket input and output streams
try {
tmpIn = socket.getInputStream();
tmpOut = socket.getOutputStream();
} catch (IOException e) {
Log.e(TAG, "temp sockets not created", e);
}
mmInStream = tmpIn;
mmOutStream = tmpOut;
}
public void run() {
Log.i(TAG, "BEGIN mConnectedThread");
int bytes;
//Keep listening to the InputStream while connected
while (true) {
try {
byte[] buffer = new byte[256];
//Read from the InputStream
bytes = mmInStream.read(buffer);
if (bytes > 0) {
//Send the obtained bytes to the UI Activity
mHandler.obtainMessage(amarre.MESSAGE_READ, bytes, -1,
buffer).sendToTarget();
} else {
Log.e(TAG, "disconnected");
connectionLost();
//add by chongqing jinou
if (mState != STATE_NONE) {
Log.e(TAG, "disconnected");
//Start the service over to restart listening mode
BluetoothService.this.start();
}
break;
}
} catch (IOException e) {
Log.e(TAG, "disconnected", e);
connectionLost();
//add by chongqing jinou
if (mState != STATE_NONE) {
//Start the service over to restart listening mode
BluetoothService.this.start();
}
break;
}
}
}
/**
* Write to the connected OutStream.
* 
* @param buffer
*            The bytes to write
*/
public void write(byte[] buffer) {
try {
mmOutStream.write(buffer);
//Share the sent message back to the UI Activity
mHandler.obtainMessage(amarre.MESSAGE_WRITE, -1, -1, buffer)
.sendToTarget();
} catch (IOException e) {
Log.e(TAG, "Exception during write", e);
}
}
public void cancel() {
try {
mmSocket.close();
} catch (IOException e) {
Log.e(TAG, "close() of connect socket failed", e);
}
}
}
}

- Je envoyer les données à partir d'une autre classe, donc:

        byte[] send;
try {
send = message.getBytes("GB2312");
} catch (UnsupportedEncodingException e) {
send = message.getBytes();
}
mService.write(send);

message est une Chaîne de caractères var.. Alors, comment puis-je formater le texte??, ou au moins, changer la taille de police...

OriginalL'auteur Leonardo Sapuy | 2013-01-11