要在Android中通过蓝牙连接两台设备并启用互联网访问，可以按照以下步骤进行操作：

1. 添加权限和依赖项： 在AndroidManifest.xml文件中添加以下权限：

在build.gradle文件的dependencies中添加以下依赖项：

implementation 'com.android.volley:volley:1.2.0'

2. 设置蓝牙连接： 在MainActivity.java文件中，使用BluetoothAdapter类来实现蓝牙连接。以下是一个简单的示例代码：

import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.os.Handler;
import android.os.Message;
import android.widget.Toast;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.UUID;

public class MainActivity extends AppCompatActivity {
    private BluetoothAdapter bluetoothAdapter;
    private BluetoothSocket bluetoothSocket;
    private BluetoothDevice bluetoothDevice;
    
    private ConnectedThread connectedThread;
    
    private static final UUID MY_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
    private static final int MESSAGE_READ = 1;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
        
        if (bluetoothAdapter == null) {
            // 设备不支持蓝牙
            Toast.makeText(this, "设备不支持蓝牙", Toast.LENGTH_SHORT).show();
        } else {
            if (!bluetoothAdapter.isEnabled()) {
                // 请求打开蓝牙
                Intent enableBluetoothIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
                startActivityForResult(enableBluetoothIntent, REQUEST_ENABLE_BT);
            } else {
                // 已经打开蓝牙
                connectBluetoothDevice();
            }
        }
    }
    
    private void connectBluetoothDevice() {
        Set pairedDevices = bluetoothAdapter.getBondedDevices();
        if (pairedDevices.size() > 0) {
            for (BluetoothDevice device : pairedDevices) {
                if (device.getName().equals("设备名称")) {
                    bluetoothDevice = device;
                    break;
                }
            }
        }
        
        if (bluetoothDevice != null) {
            try {
                bluetoothSocket = bluetoothDevice.createRfcommSocketToServiceRecord(MY_UUID);
                bluetoothSocket.connect();
                connectedThread = new ConnectedThread(bluetoothSocket);
                connectedThread.start();
                Toast.makeText(this, "蓝牙连接成功", Toast.LENGTH_SHORT).show();
            } catch (IOException e) {
                e.printStackTrace();
                Toast.makeText(this, "蓝牙连接失败", Toast.LENGTH_SHORT).show();
            }
        } else {
            Toast.makeText(this, "未找到对应设备", Toast.LENGTH_SHORT).show();
        }
    }
    
    private class ConnectedThread extends Thread {
        private final InputStream inputStream;
        private final OutputStream outputStream;
        
        public ConnectedThread(BluetoothSocket socket) {
            InputStream tempInputStream = null;
            OutputStream tempOutputStream = null;
            
            try {
                tempInputStream = socket.getInputStream();
                tempOutputStream = socket.getOutputStream();
            } catch (IOException e) {
                e.printStackTrace();
            }
            
            inputStream = tempInputStream;
            outputStream = tempOutputStream;
        }
        
        @Override
        public void run() {
            byte[] buffer = new byte[1024];
            int bytes;
            
            while (true) {
                try {
                    bytes = inputStream.read(buffer);
                    mHandler.obtainMessage(MESSAGE_READ, bytes, -1, buffer).sendToTarget();
                } catch (IOException e) {
                    e.printStackTrace();
                    break;
                }
            }
        }
        
        public void write(byte[] bytes) {
            try {
                outputStream.write(bytes);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        
        public void cancel() {
            try {
                bluetoothSocket.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    
    private Handler mHandler = new Handler(new Handler.Callback() {
        @Override
        public boolean handleMessage(Message msg) {
            if (msg.what == MESSAGE_READ) {
                byte[] readBuffer = (byte[]) msg.obj;
                String received