OTGService

public class OtgService extends Service
{

    private boolean mOtgConnected = false;
    private Handler mHandler;

    Timer taskTimer = new Timer();

    TimerTask task = new TimerTask()
    {
        private int last_Length = -1;

        @Override
        public void run()
        {
            Context context = OtgService.this.getBaseContext();

            File directory = new File("/sys/bus/usb/devices");
            File[] contents = directory.listFiles();

            int conn_length = contents.length;

            if(conn_length ==last_Length)
            {
                return;
            }
            else
            {
                last_Length = conn_length;
            }

            if(conn_length == 0)
            {
                mOtgConnected = false;
                mHandler.post(flagChangedTask);
            }
            else if (conn_length > 0)  //Might get a -1
            {
                mOtgConnected = true;
                mHandler.post(flagChangedTask);

            }

            if(conn_length == 0)
            {
                displayDialog(false);
            }
            else if (conn_length > 0)  //Might get a -1
            {
                displayDialog(true);
            }

        }
    };

    //Will post this to the main thread
    Runnable flagChangedTask = new Runnable()
    {
        @Override
        public void run()
        {
            if (mOtgConnected)
                Toast.makeText(OtgService.this,"otg connected",Toast.LENGTH_SHORT).show();
            else
                Toast.makeText(OtgService.this,"otg not connected",Toast.LENGTH_SHORT).show();
        }
    };


    public OtgService()
    {

    }

    public void displayDialog(boolean isConnected)
    {
        Intent intent = new Intent(this, MainActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

        intent.putExtra(MainActivity.IS_CONNECTED_KEY, isConnected);

        startActivity(intent);
    }

    private void onStartCompat(Intent intent)
    {
        Log.e("###", "Starting service!");

        if (mHandler == null)
            mHandler = new Handler(getMainLooper());

        taskTimer.scheduleAtFixedRate(task, 0, 1000);
    }

    // This is the old onStart method that will be called on the pre-2.0
    // platform.  On 2.0 or later we override onStartCommand() so this
    // method will not be called.
    @Override
    public void onStart(Intent intent, int startId)
    {
        onStartCompat(intent);
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId)
    {
        onStartCompat(intent);
        // We want this service to continue running until it is explicitly
        // stopped, so return sticky.
        return START_STICKY;
    }

    @Override
    public void onDestroy()
    {
        //task.cancel();
    }


    @Override
    public IBinder onBind(Intent intent)
    {
        return null;
    }
}