XListview多条目

Meng~

于 2019-01-20 09:43:00 发布

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CC 4.0 BY-SA版权

本文链接：https://blog.youkuaiyun.com/weixin_44281530/article/details/86559400

本文介绍了一个使用XListView的Fragment实现，包括数据的刷新和加载更多功能。通过AsyncTask从API获取电影列表，并使用Gson解析JSON数据。同时，文章展示了如何在离线状态下从SQLite数据库读取数据。

//XListview的主页面

public class QtFragment extends Fragment {
private XListView xlistview;
private String url="http://172.17.8.100/movieApi/movie/v1/findReleaseMovieList?";
private List<MyBean.ResultBean> list=new ArrayList<>();
private int page;
private MyAdapter adapter;
private UserDao dao;

@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.qtfragment, container, false);
    xlistview= view.findViewById(R.id.xlistview);
    xlistview.setPullLoadEnable(true);
    adapter = new MyAdapter(getActivity(), list);
    xlistview.setAdapter(adapter);
    dao = new UserDao(getActivity());
    xlistview.setXListViewListener(new XListView.IXListViewListener() {
        @Override
        public void onRefresh() {
            page=1;
            initData(page);
        }

        @Override
        public void onLoadMore() {
            page++;
            initData(page);
        }
    });
    return view;
}

private void initData(int page) {
    if (MyWork.isconn(getActivity())){
        new MyAnync().execute(url+"page=1"+"&count=10");
    }else {
        Cursor query = dao.query("user", null, null, null, null, null, null);
        if (query.moveToFirst()){
            while (query.moveToNext()){
                String name1 = query.getString(query.getColumnIndexOrThrow("name"));
                String image1 = query.getString(query.getColumnIndexOrThrow("image"));
                list.add(new MyBean.ResultBean(image1,name1));
            }
            adapter.notifyDataSetChanged();

        }
    }

}

class MyAnync extends AsyncTask<String,Void,String>{

    @Override
    protected String doInBackground(String... strings) {
        String s = MyWork.getgson(strings[0]);
        return s;
    }

    @Override
    protected void onPostExecute(String s) {
        super.onPostExecute(s);
        Gson gson = new Gson();
        MyBean myBean = gson.fromJson(s, MyBean.class);
        List<MyBean.ResultBean> result = myBean.getResult();
        list.addAll(result);
        for (int i=0;i<result.size();i++){
            dao.insert(list.get(i).getName(),list.get(i).getImageUrl());
        }
        adapter.notifyDataSetChanged();
        ying();
    }
}

private void ying(){
    xlistview.setRefreshTime("刚刚");
    xlistview.stopRefresh();
    xlistview.stopLoadMore();
}

}

对应的布局

<com.bwie.xlistviewlibrary.view.XListView
android:id="@+id/xlistview"
android:layout_width=“match_parent”
android:layout_height=“match_parent”></com.bwie.xlistviewlibrary.view.XListView>