判斷是否有網 沒有從資料庫中取值

public class Frag02 extends Fragment {

    private ArrayList<JsonBean.DataBean> list = new ArrayList<JsonBean.DataBean>();
    private Dao dao;
    private ListView ListView;
    private MyListAdapter adapter;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view1 = inflater.inflate(R.layout.frag02,container,false);
        dao = new Dao(getActivity());
        ListView = view1.findViewById(R.id.listView);

        if (!MyNewWork.isConn(getActivity())){
            Cursor query = dao.query("aaa", null, null, null, null, null, null, null);
            if (query.moveToFirst()) {
               do {
                   String ssss = query.getString(query.getColumnIndex("name"));
                   String pass = query.getString(query.getColumnIndex("pass"));
                   list.add(new JsonBean.DataBean("","",ssss,pass));

               }while (query.moveToNext());
            }
            query.close();

        }else{
            Toast.makeText(getActivity(),"有網路",Toast.LENGTH_LONG).show();
        }

        adapter = new MyListAdapter(getActivity(), list);
        ListView.setAdapter(adapter);

        return view1;
    }
}
 

判斷有沒有網
有：MyNewWork.isConn(getActivity())
沒有：！MyNewWork.isConn(getActivity())

if (!MyNewWork.isConn(getActivity())){
           

        }else{
            Toast.makeText(getActivity(),"有網路",Toast.LENGTH_LONG).show();
        }