Imprimir archivo PDF a través de Bluetooth Impresora Android

En Mi proyecto Necesita imprimir el archivo Pdf a través de la impresora Bluetooth. Escribo un código para imprimir a través de pdf Su para bien para un texto,

Pero quiero imprimir el archivo del pdf en la impresora de Bluetooth.

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Mi código java para imprimir texto

@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); lv= (ListView) findViewById(R.id.listView1); // listdata(lv); try { // we are goin to have three buttons for specific functions Button openButton = (Button) findViewById(R.id.open); Button sendButton = (Button) findViewById(R.id.send); Button closeButton = (Button) findViewById(R.id.close); Button btnco= (Button) findViewById(R.id.btnconnect); btnco.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub try { findBT(); openBT(); } catch (Exception ex) { } } }); myLabel = (TextView) findViewById(R.id.label); myTextbox = (EditText) findViewById(R.id.entry); // open bluetooth connection openButton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { startActivity(new Intent(MainActivity.this,NewAct.class)); } }); // send data typed by the user to be printed sendButton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { try { sendData(); } catch (IOException ex) { } } }); // close bluetooth connection closeButton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { try { closeBT(); } catch (IOException ex) { } } }); } catch (NullPointerException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } /* * This will find a bluetooth printer device */ void findBT() { try { mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); if (mBluetoothAdapter == null) { myLabel.setText("No bluetooth adapter available"); Toast.makeText(MainActivity.this, "No bluetooth available", Toast.LENGTH_LONG).show(); // startActivity(new Intent(MainActivity.this,NewAct.class)); } if (!mBluetoothAdapter.isEnabled()) { Intent enableBluetooth = new Intent( BluetoothAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(enableBluetooth, 0); Toast.makeText(this, "OPen", Toast.LENGTH_LONG).show(); //startActivity(new Intent(MainActivity.this,NewAct.class)); } Set<BluetoothDevice> pairedDevices = mBluetoothAdapter .getBondedDevices(); if (pairedDevices.size() > 0) { for (BluetoothDevice device : pairedDevices) { // MP300 is the name of the bluetooth printer device if (device.getName().equals(NewAct.printer)) { //openBT(); mmDevice = device; break; } else { } } } { myLabel.setText("Bluetooth Device Found"); try { // Standard SerialPortService ID UUID uuid = UUID.fromString("00001101-0000-1000-8000-00805f9b34fb"); mmSocket = mmDevice.createRfcommSocketToServiceRecord(uuid); mmSocket.connect(); mmOutputStream = mmSocket.getOutputStream(); mmInputStream = mmSocket.getInputStream(); beginListenForData(); myLabel.setText("Bluetooth Opened"); } catch (NullPointerException e) { e.printStackTrace(); } } } catch (NullPointerException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } /* * Tries to open a connection to the bluetooth printer device */ void openBT() throws IOException { try { // Standard SerialPortService ID UUID uuid = UUID.fromString("00001101-0000-1000-8000-00805f9b34fb"); mmSocket = mmDevice.createRfcommSocketToServiceRecord(uuid); mmSocket.connect(); mmOutputStream = mmSocket.getOutputStream(); mmInputStream = mmSocket.getInputStream(); beginListenForData(); myLabel.setText("Bluetooth Opened"); } catch (NullPointerException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } /* * After opening a connection to bluetooth printer device, * we have to listen and check if a data were sent to be printed. */ void beginListenForData() { try { final Handler handler = new Handler(); // This is the ASCII code for a newline character final byte delimiter = 10; stopWorker = false; readBufferPosition = 0; readBuffer = new byte[1024]; workerThread = new Thread(new Runnable() { public void run() { while (!Thread.currentThread().isInterrupted() && !stopWorker) { try { int bytesAvailable = mmInputStream.available(); if (bytesAvailable > 0) { byte[] packetBytes = new byte[bytesAvailable]; mmInputStream.read(packetBytes); for (int i = 0; i < bytesAvailable; i++) { byte b = packetBytes[i]; if (b == delimiter) { byte[] encodedBytes = new byte[readBufferPosition]; System.arraycopy(readBuffer, 0, encodedBytes, 0, encodedBytes.length); final String data = new String( encodedBytes, "US-ASCII"); readBufferPosition = 0; handler.post(new Runnable() { public void run() { myLabel.setText(data); } }); } else { readBuffer[readBufferPosition++] = b; } } } } catch (IOException ex) { stopWorker = true; } } } }); workerThread.start(); } catch (NullPointerException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } /* * This will send data to be printed by the bluetooth printer */ void sendData() throws IOException { try { // the text typed by the user String msg = myTextbox.getText().toString(); msg += "\n"; mmOutputStream.write(msg.getBytes()); // tell the user data were sent myLabel.setText("Data Sent"); } catch (NullPointerException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } /* * Close the connection to bluetooth printer. */ void closeBT() throws IOException { try { stopWorker = true; mmOutputStream.close(); mmInputStream.close(); mmSocket.close(); myLabel.setText("Bluetooth Closed"); } catch (NullPointerException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } public void listdata(ListView lv){ try{ pairedDevices = mBluetoothAdapter.getBondedDevices(); ArrayList<String> list = new ArrayList<String>(); for(BluetoothDevice bt : pairedDevices) list.add(bt.getName()); Toast.makeText(getApplicationContext(),"Showing Paired Devices", Toast.LENGTH_SHORT).show(); @SuppressWarnings("unchecked") final ArrayAdapter<String> adapter = new ArrayAdapter<String> (this,android.R.layout.simple_list_item_1, list); lv.setAdapter(adapter); }catch(Exception e) { Toast.makeText(this, "error"+e, Toast.LENGTH_LONG).show(); } } 

No tengo Idea Cómo pasar el archivo Pdf para la impresión a la impresora de Bluetooth

Por favor, ayúdame ¿Cómo puedo hacer esto

Gracias por adelantado.

 Intent intent = new Intent(); intent.setAction(android.content.Intent.ACTION_VIEW); intent.setDataAndType(Uri.fromFile(file), "application/pdf"); c.startActivity(intent); 

 /* * This will send data to be printed by the bluetooth printer */ void sendData() throws IOException { try { // the text typed by the user //String msg = myTextbox.getText().toString(); //msg += "\n"; InputStream is = this.openFileInput("filename.pdf"); // Where this is Activity ByteArrayOutputStream bos = new ByteArrayOutputStream(); byte[] b = new byte[1024]; while ((int bytesRead = is.read(b)) != -1) { bos.write(b, 0, bytesRead); } byte[] bytes = bos.toByteArray(); byte[] printformat = { 27, 33, 0 }; //try adding this print format mmOutputStream.write(printformat); mmOutputStream.write(bytes); // tell the user data were sent myLabel.setText("Data Sent"); closeBT(); } catch (NullPointerException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } 

 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />