Question

启动用c。

编写的BLUETOOTH服务器

https://github.com/RyanGlScott/BluetoothTest/blob/master/C%20BlueZ%20Server/bluez_server.c

这是命令sdptool browse local：

的输出

....other services....

    Service Name: AVRCP CT
    Service RecHandle: 0x10005
    Service Class ID List:
      "AV Remote" (0x110e)
    Protocol Descriptor List:
      "L2CAP" (0x0100)
        PSM: 23
      "AVCTP" (0x0017)
        uint16: 0x103
    Profile Descriptor List:
      "AV Remote" (0x110e)
        Version: 0x0100


    /*MY SERVICE!!!*/
    Service Name: Armatus Bluetooth server
    Service Description: A HERMIT server that interfaces with the Armatus Android app
    Service Provider: Armatus
    Service RecHandle: 0x10006
    Service Class ID List:
      "Serial Port" (0x1101)
    Protocol Descriptor List:
      "L2CAP" (0x0100)
      "RFCOMM" (0x0003)
        Channel: 3
    Profile Descriptor List:
      "Serial Port" (0x1101)
        Version: 0x0100

....other services....

我正在尝试使用Android应用程序找到此服务

// Create a BroadcastReceiver for ACTION_FOUND
private final BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {

      public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            // Whenever a remote Bluetooth device is found
            if (BluetoothDevice.ACTION_FOUND.equals(action)) {
                // Get the BluetoothDevice object from the Intent
                BluetoothDevice bluetoothDevice = 
                intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                // Add the name and address to an array adapter to show in a ListView
                adapter.add(bluetoothDevice.getName() + "\n"
                        + bluetoothDevice.getAddress());


                if (bluetoothDevice.getName().equals("mint-0")) {
                    Log.d("tagmint0","bene bene");

                    try {

                    ParcelUuid[] uuids = (ParcelUuid[])  bluetoothDevice.getUuids();


                    for (ParcelUuid uuid : uuids) {
                        Log.d("x", "mintUUIDxx: " + uuid.getUuid().toString() + "\n");

                    }



                    } catch (Exception e) {
                    e.printStackTrace();
                    }

                }
            }
        }
    };

我的问题是，为什么我的Android应用程序无法找到我的服务，即使使用命令sdptool浏览本地可以看到它？

这是android应用程序输出

mintUUIDxx: 0000111e-0000-1000-8000-00805f9b34fb
mintUUIDxx: 00001105-0000-1000-8000-00805f9b34fb
mintUUIDxx: 00001106-0000-1000-8000-00805f9b34fb
mintUUIDxx: 0000112d-0000-1000-8000-00805f9b34fb
mintUUIDxx: 0000110e-0000-1000-8000-00805f9b34fb
mintUUIDxx: 00001112-0000-1000-8000-00805f9b34fb
mintUUIDxx: 0000111f-0000-1000-8000-00805f9b34fb
mintUUIDxx: 00000000-0000-1000-8000-00805f9b34fb

正如您所看到的，它不包含服务器uuid。有人能解释我为什么吗？

Answer 1

bluetoothDevice.getUuids（）;

此方法不会启动服务发现过程以从远程设备检索UUID。而是返回服务UUID的本地缓存副本。

请改用fetchUuidsWithSdp()。此方法在远程设备上执行服务发现以获取支持的UUID。

Answer 2

如果你使用了相同的git代码，那么看起来你在android中提到了不同的UUID。在你bluez_server.c

uint32_t svc_uuid_int[] = { 0x01110000, 0x00100000, 0x80000080, 0xFB349B5F };

和android输出

mintUUIDxx: 0000111e-0000-1000-8000-00805f9b34fb

尝试使用此

更改bluez_server.c中的那一行

uint32_t svc_uuid_int[] = { 0x0000111e, 0x00001000, 0x80000080, 0x5f9b34fb };

使用Android应用程序找不到蓝牙服务

2 个答案: