code: public void onServerStop() {
          closeDialog();
          mRootUrl = null;
          mBtnStart.setVisibility(View.VISIBLE);
          mBtnStop.setVisibility(View.GONE);
          mBtnBrowser.setVisibility(View.GONE);
          mTvMessage.setText(R.string.server_stop_succeed);
      }
docs: Stop notify.