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我有一个蓝牙服务器在笔记本电脑上监听传入连接。Android 是一个客户端，想要连接到 PC。

怎么了？我可以第一次连接并将数据发送到PC。当我关闭 Android Activity 并再次启动它时，连接功能通过，但 PC 没有注册新连接。当我尝试发送数据时，android 系统会记录以下内容：

05-16 13:11:17.091: 错误/BluetoothEventLoop.cpp(102): event_filter: 收到信号 org.bluez.Device:PropertyChanged from /org/bluez/30064/hci0/dev_50_63_13_CB_52_96

什么有效？如果我在服务器和客户端上更改服务器的 UUID，它将在我第一次尝试连接时再次工作。随后的尝试不起作用。

服务器代码：

    /** Waiting for connection from devices */
private void waitForConnection() {
    // retrieve the local Bluetooth device object
    LocalDevice local = null;

    StreamConnectionNotifier notifier;
    StreamConnection connection = null;

    // setup the server to listen for connection
    try {
        local = LocalDevice.getLocalDevice();
        local.setDiscoverable(DiscoveryAgent.GIAC);

        UUID uuid = new UUID("af29e59088cc11e1b0c40800200c9a56", false);
        System.out.println(uuid.toString());

        String url = "btspp://localhost:" + uuid.toString() + ";name=ThinBTClient";                     
        notifier = (StreamConnectionNotifier)Connector.open(url);
    } catch (Exception e) {
        e.printStackTrace();
        return;
    }

    // waiting for connection
    while(true) {
        try {
            System.out.println("Wait Thread: Waiting for connection...");
            connection = notifier.acceptAndOpen();        

            System.out.println("Got connection");               
            Thread processThread = new Thread(new ProcessConnectionThread(connection));
            processThread.start();              
        } catch (Exception e) {
            e.printStackTrace();
            return;
        }
    }
}

客户端代码：

    BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address);
    UUID SPP_UUID = UUID.fromString("af29e590-88cc-11e1-b0c4-0800200c9a56");

    try {
        btSocket = device.createRfcommSocketToServiceRecord(SPP_UUID);
        mBluetoothAdapter.cancelDiscovery();
        btSocket.connect();
        outStream = btSocket.getOutputStream();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

有任何想法吗？

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1 回答 1

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Update:

I tested the same code on another laptop, Toshiba/Win7 and code works without a problem. So I suspect this is something with drivers. I will try updating.

于 2012-05-17T09:02:44.150 回答