无法连接我的蓝牙设备

Question

我已经为此工作了几天，但无法解决问题。

这就是我现在得到的 ->

蓝牙处理器

    protected BluetoothAdapter bluetoothAdapter;
    protected BluetoothServer btServer;
    protected BluetoothSocket btSocket;
    protected BluetoothDevice pairedBTDevice;
    protected BluetoothListener btListener;
    protected ParcelUuid uuid;

    public BluetoothHandler()
    {
        BluetoothAdapter = null;
    }

    public void Initialize()
    {
        BluetoothAdapter = BluetoothAdapter.DefaultAdapter;

        // Check if it has a bluetooth interface
        if (BluetoothAdapter == null)
        {
            Console.WriteLine("Bluetooth is not available!");
            return;
        }

        // Check if bluetooth interface is enabled
        if (!BluetoothAdapter.IsEnabled)
        {
            BluetoothAdapter.Enable();
        }

        int count = 0;

        // Get all the devices in the bluetooth list
        var listDevices = BluetoothAdapter.BondedDevices;
        if (listDevices.Count > 0)
        {
            foreach (var btDevice in listDevices)
            {
                // Get the specific controller 
                if (btDevice.Name == "MOCUTE-032_B52-CA7E")
                {
                    UUID = btDevice.GetUuids().ElementAt(count);
                    pairedBTDevice = btDevice;
                }
                count++;
            }
        }

        // Check if bluetooth is enabled
        // Check if there is a device
        if (BluetoothAdapter.IsEnabled && pairedBTDevice != null)
        {
            // Check if it's paired
            if (pairedBTDevice.BondState == Bond.Bonded)
            {
                // First start the server
                btServer = new BluetoothServer(this);

                Thread.Sleep(1000);

                // Start a new thread
                Thread thread = new Thread(new ThreadStart(Connect));
                thread.Start();
            }
        }
    }

    protected void Connect()
    {
        // Check if there is no socket already
        if (btSocket == null)
        {
            try
            {
                btSocket = pairedBTDevice.CreateRfcommSocketToServiceRecord(UUID.Uuid);
            }
            catch (IOException ex)
            {
                throw ex;
            }
        }

        try
        {
            Console.WriteLine("Attempting to connect...");

            // Create a socket connection
            btSocket.Connect();
        }
        catch
        {
            Console.WriteLine("Connection failed...");
            Console.WriteLine("Attempting to connect...");
            try
            {
                btSocket = pairedBTDevice.CreateInsecureRfcommSocketToServiceRecord(UUID.Uuid);
                btSocket.Connect();
            }
            catch
            {
                Console.WriteLine("Connection failed...");
                return;
            }
        }

        Console.WriteLine("Client socket is connected!");

        Read();
    }

    protected void Read()
    {
        btListener = new BluetoothListener();
        btListener.Read(btSocket);
    }

蓝牙服务器

    private BluetoothHandler bluetoothHandler;
    private BluetoothServerSocket serverSocket;
    private Thread thread;

    public BluetoothServer(BluetoothHandler bluetoothHandler)
    {
        this.bluetoothHandler = bluetoothHandler;

        BluetoothServerSocket tmp = null;

        try
        {
            tmp = bluetoothHandler.BluetoothAdapter.ListenUsingRfcommWithServiceRecord("MOCUTE-032_B52-CA7E", bluetoothHandler.UUID.Uuid);
        }
        catch (IOException ex)
        {
            throw ex;
        }

        serverSocket = tmp;

        thread = new Thread(new ThreadStart(Run));
        thread.Start();
    }

    protected void Run()
    {
        System.Console.WriteLine("Server is running...");
        while (true)
        {
            try
            {
                serverSocket.Accept();
            }
            catch (IOException ex)
            {
                System.Console.WriteLine("FAILED! === > " + ex);
            }
        }
    }

蓝牙监听器

    protected Stream mmInStream;

    public void Read(BluetoothSocket socket)
    {
        Stream tmpIn = null;

        try
        {
            tmpIn = socket.InputStream;
        }
        catch (IOException ex)
        {
            throw ex;
        }

        mmInStream = tmpIn;

        Thread thread = new Thread(new ThreadStart(Run));
        thread.Start();
    }

    protected void Run()
    {
        byte[] buffer = new byte[1024];
        int bytes;

        Console.WriteLine("Waiting for events...");

        while (true)
        {
            try
            {
                if (mmInStream.IsDataAvailable())
                {
                    bytes = mmInStream.Read(buffer, 0, buffer.Length);
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
    }

我想连接以下控制器 ->

所以，我想从控制器捕获按钮事件，但我不知道了..

我也遇到了已知错误：Java.IO.IOException: "read failed, socket might closed or timeout, read ret: -1

控制器的UUID为：00001124-0000-1000-8000-00805f9b34fb

Answer 1

我有一个例子可以连接到我的 Github 上的蓝牙 (2.0) 设备，您可以检查代码并查看您的设置是否正确这里是 link https://github.com/AlejandroRuiz/Mono/blob/master/Arduino/Bluetooth/MainActivity.cs如果您对代码有任何具体问题，请告诉我您还需要确定使用的是哪种蓝牙，因为连接到 4.0 BLE 的方式与旧的 2.0

有很大不同

Answer 2

问题已解决。我不需要蓝牙插座。我刚刚使用了覆盖方法 "KeyDown" 和 "KeyUp"。现在效果很好:)

如果你需要一个套接字并且你有像 IOException 这样的异常：读取失败，套接字可能关闭那么你应该在这里阅读我的修复：

IOException：读取失败，套接字可能已关闭 - 蓝牙开启 Android 4.3

无法连接我的蓝牙设备

Can't connect with my bluetooth device

c#

android

bluetooth

xamarin.android

xamarin