如何在android中获取连接的蓝牙设备数据?

How to get connected Bluetooth device data in android?

我正在开发一个应用程序来接收来自蓝牙遥控器的蓝牙命令。所以要求是每当用户单击一个按钮时,我都应该为该按钮干杯 Key_Code。我试图通过 BluetoothManager class 访问 Bluetooth_Service,但无法访问该部分。请帮帮我。

MyCode 到 getBluetoothDevices:

Set<BluetoothDevice> pairedDevices = mBluetoothAdapter.getBondedDevices();
if (pairedDevices.size() > 0) {
            String str = "";
            for (BluetoothDevice device : pairedDevices) {
                mDevice = device;
                str = str+mDevice.getName()+", ";
            }              
        }else{
            System.out.println("No devices Found");
        }

我正在获取设备名称和 mac 地址等,但是没有用于接收命令的活页夹

有两种方法可以做到这一点。

  1. 如果你想从你的Activity远程接收android的KEY_CODES,你可以直接调用下面的方法。它会给你所有按下的按钮的键码。

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        Toast.makeText(this,"KeyCode is"+keyCode,Toast.LENGTH_LONG).show();          
        return super.onKeyDown(keyCode, event);
    }
    

注意:android 服务无法做到这一点。

  1. 编写一个与您自己的蓝牙服务器连接的蓝牙套接字并开始通信。

客户:

private class ClietnThread extends Thread{

    ClietnThread(BluetoothDevice dev){
        mDevice= dev;
    }

    @Override
    public void run() {
        super.run();
        Log.e(Tag,"Now CONNECTING to"+mDevice.getName());
        try{
            //mBluetoothSocket =(BluetoothSocket) mDevice.getClass().getMethod("createRfcommSocket", new Class[] {int.class}).invoke(mDevice,1);
            mBluetoothSocket = mDevice.createRfcommSocketToServiceRecord(MY_UUID);
            mBluetoothSocket.connect();
        }catch (IOException e){
            Log.e(Tag,"Connect Failed");
            e.printStackTrace();
            try {
                mBluetoothSocket.close();
            } catch (IOException closeException) {
                Log.e("Client", "Could not close the client socket", closeException);
            }
        }
    }
}

服务器:

private class MyServer extends Thread{
        MyServer(){
        }

    @Override
    public void run() {
        super.run();
        Log.e(Tag,"Bluetooth Listening");
        try {
            mBluetoothServerSocket =  mBluetoothAdapter.listenUsingRfcommWithServiceRecord(NAME, MY_UUID);
            mBluetoothAdapter.cancelDiscovery();
        }catch (IOException e){
            e.printStackTrace();
        }
        while (true){
            try{
               BluetoothSocket mSoicket = mBluetoothServerSocket.accept();
               Log.e(Tag,"ConnectedToSpike");
            }catch (IOException e){
               e.printStackTrace();
            }
        }
    }
}