libsubsurface-handler.java

gistfile1.txt

public class MainActivity extends Activity
{
    static {
        System.loadLibrary("subsurface-bridge");
    }

    public native String libsubsurfaceExtract(long bluetoothsocket);

    private BluetoothAdapter bluetoothAdapter = null;
    BluetoothSocket socket = null;
    OutputStream out = null;
    InputStream in = null;
    
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);

  bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
        Set<BluetoothDevice> pairedDevices = bluetoothAdapter.getBondedDevices();

        if (pairedDevices.size() > 0) {
            // There are paired devices. Get the name and address of each paired device.
            for (BluetoothDevice device : pairedDevices) {
                String deviceName = device.getName();
                String deviceHardwareAddress = device.getAddress(); // MAC address
                LOG.d("bluetooth", deviceName + deviceHardwareAddress);
            }
        }

        final UUID SERIAL_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"); //UUID for serial connection
        String mac = "00:80:25:34:CE:A5"; //my laptop's mac adress
        BluetoothDevice device = bluetoothAdapter.getRemoteDevice(mac); //get remote device by mac, we assume these two devices are already paired


        // Get a BluetoothSocket to connect with the given BluetoothDevice

        try {
            socket = device.createRfcommSocketToServiceRecord(SERIAL_UUID);
        } catch (IOException e) {
            Log.d("bluetooth", e.getMessage());
        }

        try {
            socket.connect();

            out = socket.getOutputStream();
            in = socket.getInputStream();
            LOG.d("plugin", "library loaded");
            LOG.d("plugin", libsubsurfaceExtract(12));
        } catch (Exception e) {
            Log.d("bluetooth", e.getMessage());
        }
        return "Native called worked";
    }

    void writeToSocket(byte[] data){
        try {
            try {
                Thread.sleep(300);
                if (socket.isConnected()) {
                    out.write(data);
                    //LOG.d("output", String.valueOf(data.length) );
                }
                else
                    LOG.d("outputstream", "socket is not connected");

            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    };
 
    }