基于Androidstudio的蓝牙通信服务端代码

以下是一个基于 Android Studio 的蓝牙通信服务端代码的示例：

public class BluetoothServer extends Thread {
    private final BluetoothServerSocket mmServerSocket;
    private BluetoothAdapter mBluetoothAdapter;
    private Context mContext;
    private Handler mHandler;
    private BluetoothSocket mBluetoothSocket;

    public BluetoothServer(Context context, Handler handler) {
        mContext = context;
        mHandler = handler;
        mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
        BluetoothServerSocket tmp = null;
        try {
            // MY_UUID is the app's UUID string, also used by the client code.
            tmp = mBluetoothAdapter.listenUsingRfcommWithServiceRecord("BluetoothServer", MY_UUID);
        } catch (IOException e) {
            Log.e(TAG, "Socket's listen() method failed", e);
        }
        mmServerSocket = tmp;
    }

    public void run() {
        mBluetoothSocket = null;
        // Keep listening until exception occurs or a socket is returned.
        while (true) {
            try {
                mBluetoothSocket = mmServerSocket.accept();
            } catch (IOException e) {
                Log.e(TAG, "Socket's accept() method failed", e);
                break;
            }

            if (mBluetoothSocket != null) {
                // A connection was accepted. Perform work associated with
                // the connection in a separate thread.
                manageMyConnectedSocket(mBluetoothSocket);
                try {
                    mmServerSocket.close();
                } catch (IOException e) {
                    Log.e(TAG, "Could not close the connect socket", e);
                }
                break;
            }
        }
    }

    // Closes the connect socket and causes the thread to finish.
    public void cancel() {
        try {
            mBluetoothSocket.close();
        } catch (IOException e) {
            Log.e(TAG, "Could not close the connect socket", e);
        }
    }

    private void manageMyConnectedSocket(BluetoothSocket socket) {
        // Do work to manage the connection (in a separate thread)
        // For example:
        // InputStream in = socket.getInputStream();
        // OutputStream out = socket.getOutputStream();
    }
}

在这个示例中，我们创建了一个名为 `BluetoothServer` 的线程，在 `run()` 方法中，我们使用 `listenUsingRfcommWithServiceRecord()` 方法来创建一个蓝牙服务器端的 socket，然后调用 `accept()` 方法来监听客户端的连接请求。如果有客户端连接成功，`accept()` 方法会返回一个已连接的蓝牙 socket，我们可以在 `manageMyConnectedSocket()` 方法中处理连接。

要使用这个服务端代码，您需要在您的应用程序中创建一个 `BluetoothServer` 的实例，并将其启动：

BluetoothServer server = new BluetoothServer(this, mHandler);
server.start();

其中，`mHandler` 是用于在主线程中处理蓝牙连接事件的 `Handler` 对象。

请注意，这只是一个示例代码，您需要根据您的实际需求进行修改和扩展。