android蓝牙串口连接代码
在做android蓝牙串口连接的时候一般会使用

  BluetoothSocket tmp = null;毕业论文 

            // 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);
          }

然后是tmp。connect方法

可是 BluetoothSocket 。connect方法本身就会报很多错误

这是我自己修改的方法

  private class ConnectThread extends Thread {
        private  BluetoothSocket mmSocket;
        private  BluetoothDevice mmDevice;
        ImprovedBluetoothDevice improvedBluetoothDevice;
        public ConnectThread(BluetoothDevice device) {
            mmDevice = device;
            BluetoothSocket tmp = null;

     
            improvedBluetoothDevice = new ImprovedBluetoothDevice(device);
        }

        public void run() {
            Log.i(TAG, "BEGIN mConnectThread");
            setName("ConnectThread");

            // Always cancel discovery because it will slow down a connection
            mAdapter.cancelDiscovery();

            String connectionType = "?";
   
//蓝牙设备有三十个端口号，是，从1到30，可以一个一个试，这个办法虽然笨，可是管用
    for(int port = 1; port < 31; port++) {
    Log.d(TAG, "Connecting with port: " + port);
   
    try {
    connectionType = "Secure";
    Log.d(TAG, "Attempting createRfcommSocket");
   
        BluetoothSocket s = improvedBluetoothDevice.createRfcommSocket(port);
     

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