@Override
  protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main_activity);
    LocalBluetoothManager manager = LocalBluetoothManager.getInstance(getApplicationContext());
    LocalBluetoothAdapter adapter = manager.getBluetoothAdapter();
    mAdapter = adapter;
    int state = adapter.getBluetoothState();
    Log.d("xxx", "bluetooth state is : " + state);

    // adapter.setBluetoothEnabled(false);
    // new Thread(test).start();

  }
        public void run() {
          try {
            Thread.sleep(5 * 1000);
          } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
          }

          Log.d("xxx", "after set bluetooth state is : " + mAdapter.getBluetoothState());
        };