蓝牙打印项目里socket.connect()连接不上啊，大婶们99

    private class ConnectThread extends Thread {
    
        private final BluetoothSocket mmSocket;
        private final BluetoothDevice mmDevice;
        
        public ConnectThread(BluetoothDevice device){
         Log.i(TAG, "ConnectThread");
         Log.i("wang",device + "12345");
            mmDevice = device;
            BluetoothSocket tmp = null;
            try {
             //建立于蓝牙设备通道
             //tmp = device.createRfcommSocketToServiceRecord(MY_UUID);
             tmp = (BluetoothSocket) (device.getClass().getMethod("createRfcommSocket", 
             new Class[] {int.class})).invoke(device, 1);
//                tmp = device.createRfcommSocketToServiceRecord(
//                 MY_UUID);
            } catch (Exception e) {
                e.printStackTrace();            
}
            mmSocket = tmp;
            Log.i(TAG, "mmSocket "+(mmSocket==null)+"");
        }        public void run() {
//         Log.i(tag, "++ConnectThread.run()++");         //  mAdapter.cancelDiscovery();            try {
             Log.i(TAG, "正在连接服务器");
                mmSocket.connect();
                Log.i(TAG, "连接服务器成功");
            } catch (IOException e) {
             Log.i(TAG, "连接失败信息是"+e.getMessage());
              try {
                    mmSocket.close();
                } catch (IOException e2) {
                 e2.printStackTrace();
                }
                connectionFailed();
                return;
            }            
            synchronized (BluetoothService.this) {
                mConnectThread = null;
            }            connected(mmSocket, mmDevice);
        }        public void cancel() {
//         Log.i(tag, "++ConnectThread.cancel()++");
            try {
                mmSocket.close();
            } catch (IOException e) {
//             Log.e(tag, "ConnectThread.cancel()\n" + e.getMessage());
            }
        }
    }