android蓝牙虚拟串口通信（连接蓝牙打印机打印内容）

package com.partner.bluttooth; import java.io.BufferedReader; import java.io.IOException; import java.io.OutputStream; import java.io.PrintStream; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.util.ArrayList; import java.util.List; 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.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Bundle; import android.util.Log; import android.util.Xml.Encoding; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.ListView; import android.widget.TextView; import android.widget.Toast; import android.widget.ToggleButton; public class BlueToothTestActivity extends Activity { // 该UUID表示串口服务 // 请参考文章<A // href="http://wiley.iteye.com/blog/1179417">[url]http://wiley.iteye.com/blog/1179417&lt[/url];/A> static final String SPP_UUID = "00001101-0000-1000-8000-00805F9B34FB"; Button btnSearch, btnDis, btnExit, btnConnect, btnSendData; ToggleButton tbtnSwitch; ListView lvBTDevices; TextView txtConnectok; ArrayAdapter<String> adtDevices; List<String> lstDevices = new ArrayList<String>(); BluetoothAdapter btAdapt; public static BluetoothSocket btSocket; private String btName;// 蓝牙名称 public static final String ACTION_SCAN_MODE_CHANGED = "android.bluetooth.adapter.action.SCAN_MODE_CHANGED"; EditText editSendData; // ////////////////////////////////////// private PrintStream mPrintStream = null; private BufferedReader mBufferedReader = null; private OutputStream os;//输出流给远程发送数据 // /////////////////////////////////////// @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // Button 设置 btnSearch = (Button) this.findViewById(R.id.btnSearch); btnSearch.setOnClickListener(new ClickEvent()); btnExit = (Button) this.findViewById(R.id.btnExit); btnExit.setOnClickListener(new ClickEvent()); btnDis = (Button) this.findViewById(R.id.btnDis); btnDis.setOnClickListener(new ClickEvent()); btnConnect = (Button) this.findViewById(R.id.btnConnect); btnConnect.setOnClickListener(new ClickEvent()); editSendData = (EditText) this.findViewById(R.id.editSendData); // 发送数据 btnSendData = (Button) this.findViewById(R.id.btnSendData); btnSendData.setOnClickListener(new ClickEvent()); // ToogleButton设置 tbtnSwitch = (ToggleButton) this.findViewById(R.id.tbtnSwitch); tbtnSwitch.setOnClickListener(new ClickEvent()); txtConnectok = (TextView) this.findViewById(R.id.txtConnectok); // ListView及其数据源 适配器 lvBTDevices = (ListView) this.findViewById(R.id.lvDevices); adtDevices = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, lstDevices); lvBTDevices.setAdapter(adtDevices); lvBTDevices.setOnItemClickListener(new ItemClickEvent()); btAdapt = BluetoothAdapter.getDefaultAdapter();// 初始化本机蓝牙功能 // ======================================================== // modified by wiley if (btAdapt.getState() == BluetoothAdapter.STATE_OFF)// 读取蓝牙状态并显示 tbtnSwitch.setChecked(false); else if (btAdapt.getState() == BluetoothAdapter.STATE_ON) tbtnSwitch.setChecked(true); else if (btAdapt.getState() == BluetoothAdapter.STATE_TURNING_ON) Toast.makeText(this, "start turning on 连接成功", 3000).show(); if (btAdapt.isEnabled()) { tbtnSwitch.setChecked(false); } else { tbtnSwitch.setChecked(true); } // ============================================================ // 注册Receiver来获取蓝牙设备相关的结果 IntentFilter intent = new IntentFilter(); intent.addAction(BluetoothDevice.ACTION_FOUND);// 用BroadcastReceiver来取得搜索结果 intent.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED); intent.addAction(BluetoothAdapter.ACTION_SCAN_MODE_CHANGED); intent.addAction(BluetoothAdapter.ACTION_STATE_CHANGED); registerReceiver(searchDevices, intent); } private BroadcastReceiver searchDevices = new BroadcastReceiver() { public void onReceive(Context context, Intent intent) { String action = intent.getAction(); System.out.println("action is >>>" + action); Bundle b = intent.getExtras(); Object[] lstName = b.keySet().toArray(); // 显示所有收到的消息及其细节 for (int i = 0; i < lstName.length; i++) { String keyName = lstName[i].toString(); Log.e(keyName, String.valueOf(b.get(keyName))); } BluetoothDevice device = null; // 搜索设备时，取得设备的MAC地址 if (BluetoothDevice.ACTION_FOUND.equals(action)) { device = intent .getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); if (device.getBondState() == BluetoothDevice.BOND_NONE) { String str = "未配对|" + device.getName() + "|" + device.getAddress(); if (lstDevices.indexOf(str) == -1)// 防止重复添加 lstDevices.add(str); // 获取设备名称和mac地址 adtDevices.notifyDataSetChanged(); } } else if (BluetoothDevice.ACTION_BOND_STATE_CHANGED.equals(action)) { device = intent .getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); switch (device.getBondState()) { case BluetoothDevice.BOND_BONDING: Log.d("BlueToothTestActivity", "正在配对......"); Toast.makeText(BlueToothTestActivity.this, "开始配对", 3000) .show(); break; case BluetoothDevice.BOND_BONDED: Log.d("BlueToothTestActivity", "完成配对"); connect(device);// 连接设备 break; case BluetoothDevice.BOND_NONE: Log.d("BlueToothTestActivity", "取消配对"); default: break; } } // //////////////////////////// else if (BluetoothAdapter.ACTION_STATE_CHANGED.equals(action)) { Toast.makeText(BlueToothTestActivity.this, "else if 连接成功", 3000).show(); } } }; @Override protected void onDestroy() { this.unregisterReceiver(searchDevices); super.onDestroy(); android.os.Process.killProcess(android.os.Process.myPid()); } // ////////////////////////////////////////////////// // ////////////////////////////////////////////////// class ItemClickEvent implements AdapterView.OnItemClickListener { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { if (btAdapt.isDiscovering()) btAdapt.cancelDiscovery(); String str = lstDevices.get(arg2); String[] values = str.split("\\|"); String address = values[2]; Log.e("address", values[2]); BluetoothDevice btDev = btAdapt.getRemoteDevice(address); try { Boolean returnValue = false; if (btDev.getBondState() == BluetoothDevice.BOND_NONE) { // 利用反射方法调用BluetoothDevice.createBond(BluetoothDevice // remoteDevice); Method createBondMethod = BluetoothDevice.class .getMethod("createBond"); Log.d("BlueToothTestActivity", "开始配对"); Toast.makeText(BlueToothTestActivity.this, "开始配对", 3000) .show(); returnValue = (Boolean) createBondMethod.invoke(btDev); } else if (btDev.getBondState() == BluetoothDevice.BOND_BONDED) { Toast.makeText(BlueToothTestActivity.this, "正在开始连接", 3000) .show(); connect(btDev); } } catch (Exception e) { e.printStackTrace(); } } } // 服务器端 private void serviceConnect() throws IOException { UUID uuid = UUID.fromString(SPP_UUID); BluetoothServerSocket serverSocket = btAdapt .listenUsingRfcommWithServiceRecord("MyBluetoothApp", uuid); BluetoothSocket socket = serverSocket.accept(); } // 连接设备 private void connect(BluetoothDevice btDev) { UUID uuid = UUID.fromString(SPP_UUID); Method m = null; try { try { m = btDev.getClass().getMet