android手机通过蓝牙和蓝牙打印机建立连接.doc

android手机通过蓝牙和蓝牙打印机建立连接android手机 通过蓝牙怎么和蓝牙打印机建立连接啊 ！package com.ea.test;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.util.UUID;import android.app.Activity;import android.bluetooth.BluetoothAdapter;import android.bluetooth.BluetoothDevice;import android.bluetooth.BluetoothServerSocket;import android.bluetooth.BluetoothSocket;import android.content.Intent;import android.os.Bundle;import android.util.Log;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class Bluetooth_one extends Activity / Debugging private static final String TAG = BluetoothChatService; private static final boolean D = true;protected static final int REQUEST_ENABLE_BT = 0;private Button open = null;private Button find = null;private Button conn = null;private Button trans = null;private BluetoothAdapter mBluetoothAdapter=null;private int mState;/ Constants that indicate the current connection statepublic static final int STATE_NONE = 0; / were doing nothingpublic static final int STATE_LISTEN = 1; / now listening for incoming connectionspublic static final int STATE_CONNECTING = 2; / now initiating an outgoing connectionpublic static final int STATE_CONNECTED = 3; / now connected to a remote device/ Unique UUID for this application private static final UUID MY_UUID = UUID.fromString(fa87c0d0-afac-11de-8a39-0800200c9a66);/* Called when the activity is first created. */Overridepublic void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState);setContentView(R.layout.main);open = (Button) findViewById(R.id.open);find = (Button) findViewById(R.id.find);conn = (Button) findViewById(R.id.conn);trans = (Button) findViewById(R.id.trans);addLisenner();public void addLisenner() open.setOnClickListener(new OnClickListener() Overridepublic void onClick(View v) / TODO Auto-generated method stubmBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();if (mBluetoothAdapter = null) / Device does not support BluetoothshowDialog(R.string.no_support); else if (!mBluetoothAdapter.isEnabled() Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);startActivityForResult(enableBtIntent,REQUEST_ENABLE_BT);else);find.setOnClickListener(new OnClickListener() Overridepublic void onClick(View arg0) / TODO Auto-generated method stubnew AcceptThread().start(););conn.setOnClickListener(new OnClickListener() Overridepublic void onClick(View v) / TODO Auto-generated method stubBluetoothDevice device=mBluetoothAdapter.getRemoteDevice(00:80:37:21:18:81);new ConnectThread(device).start(););/* * 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 = mBluetoothAdapter.listenUsingRfcommWithServiceRecord(ddd, 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 were 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 (Bluetooth_one.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); Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) / TODO Auto-generated method stubsuper.onActivityResult(requestCode, resultCode, data);if (REQUEST_ENABLE_BT = requestCode) if (resultCode = RESULT_OK) / user open bluetooth/ mBluetoothAdapter.startDiscovery(); else / user not open bluetoothprivate class ConnectedThread extends Thread private final BluetoothSocket mmSocket;private final InputStream mmInStream;private final OutputStream mmOutStream;public ConnectedThread(BluetoothSocket socket) mmSocket = socket;InputStream tmpIn = null;OutputStream tmpOut = null;/ Get the input and output streams, using temp objects because/ member streams are finaltry tmpIn = socket.getInputStream();tmpOut = socket.getOutputStream(); catch (IOException e) mmInStream = tmpIn;mmOutStream = tmpOut;public void run() byte buffer = new byte1024; / buffer store for the streamint bytes; / bytes returned from read()/ Keep listening to the InputStream until an exception occurswhile (true) try / Read from the InputStreambytes = mmInStream.read(buffer);/ Send the obtained bytes to the UI Activity/ mHandler.obtainMessage(MESSAGE_READ, bytes, -1, buffer) .sendToTarget(); catch (IOException e) break;/* Call this from the main Activity to send data to the remote device */public void write(byte bytes) try mmOutStream.write(bytes); catch (IOException e) /* Call this from the main Activity to shutdown the connection */public void cancel() try mmSocket.close(); catch (IOException e) private class ConnectThread extends Thread private final BluetoothSocket mmSocket;private final BluetoothDevice mmDevice;public ConnectThread(BluetoothDevice device) / Use a temporary object that is later assigned to mmSocket,/ because mmSocket is finalBluetoothSocket tmp = null;mmDevice = device;/ Get a BluetoothSocket to connect with the given BluetoothDevicetry / MY_UUID is the apps UUID string, also used by the server codetmp = device.createRfcommSocketToServiceRecord(MY_UUID); catch (