Question

再次需要你的帮助：

我想与obd2-bluetooth-adapter建立连接。出于这个原因，我看了一下AndroidSDK的BluetoothChat-Example。我能够与我的电脑建立连接，但我无法将我的Android平板电脑与我的odb2-bluetooth-adapter（elm327）配对。发现了一些提示，例如：

    myRemoteBluetoothDevice.setPassKey(....);

首先，我不能在'myRemoteBluetoothDevice'上使用该功能 - 然后我不知道在哪里使用这个功能。在connect-Thread中？

    public synchronized void connect(BluetoothDevice device, boolean secure) {
      if (D) Log.d(TAG, "connect to: " + device);

      // Cancel any thread attempting to make a connection
      if (mState == STATE_CONNECTING) {
        if (mConnectThread != null) {mConnectThread.cancel(); mConnectThread = null;}
      }

      // Cancel any thread currently running a connection
      if (mConnectedThread != null) {mConnectedThread.cancel(); mConnectedThread = null;}

      // Start the thread to connect with the given device
      mConnectThread = new ConnectThread(device, secure);
      mConnectThread.start();
      setState(STATE_CONNECTING);
}

我认为一个可能的解决方案是实现一个事件监听器或类似的东西，当远程设备需要密码时调用它？但我必须实施它？我必须在哪里使用它？有人可以帮助我吗？

提前致谢!!!

PS：我的应用程序基于以下示例： https://android.googlesource.com/platform/development/+/25b6aed7b2e01ce7bdc0dfa1a79eaf009ad178fe/samples/BluetoothChat/src/com/example/android/BluetoothChat/BluetoothChatService.java

问候。

编辑：

试图实施第一个答案：

我的BroadcastReceiver：

    private final BroadcastReceiver mReceiverRequiresPin = new BroadcastReceiver(){

    @Override
    public void onReceive(Context context, Intent intent){

        try {
            BluetoothDevice newDevice =    intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
            Class<?> btDeviceInstance =  Class.forName(BluetoothDevice.class.getCanonicalName());

            Method convert = btDeviceInstance.getMethod("convertPinToBytes", String.class);

            byte[] pin = (byte[]) convert.invoke(newDevice, "1234");

            Method setPin = btDeviceInstance.getMethod("setPin", byte[].class);
            boolean success = (Boolean) setPin.invoke(newDevice, pin);
        }
        catch (Exception e) {
            e.printStackTrace();
        }
    }
};

我的connect-method，我注册了broadcastReceiver：

    private void connect(CordovaArgs args, boolean secure,
    CallbackContext callbackContext) throws JSONException {

      final String actionPinRequested = "android.bluetooth.device.action.PAIRING_REQUEST";
    IntentFilter intentFilterPinRequested = new IntentFilter(actionPinRequested);

      cordova.getActivity().registerReceiver(mReceiverRequiresPin, intentFilterPinRequested);
    String macAddress = args.getString(0);
    BluetoothDevice device = bluetoothAdapter.getRemoteDevice(macAddress);

    if (device != null) {
        connectCallback = callbackContext;
        bluetoothSerialService.connect(device, secure);

        PluginResult result = new PluginResult(
                PluginResult.Status.NO_RESULT);
        result.setKeepCallback(true);
        callbackContext.sendPluginResult(result);

    } else {
        callbackContext.error("Could not connect to " + macAddress);
    }
}

真的很感谢你的帮助！提前致谢。

没有人有提示吗？

Answer 1

注册广播监听器：android.bluetooth.device.action.PAIRING_REQUEST。

在onrecieve中：

    BluetoothDevice newDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
    Class<?> btDeviceInstance =  Class.forName(BluetoothDevice.class.getCanonicalName());

    Method convert = btDeviceInstance.getMethod("convertPinToBytes", String.class);

    byte[] pin = (byte[]) convert.invoke(newDevice, "1234");

    Method setPin = btDeviceInstance.getMethod("setPin", byte[].class);
    success = (Boolean) setPin.invoke(newDevice, pin);

为Android蓝牙连接定义Passkey

问候。

编辑：

1 个答案: