PullToRefreshListView跟banner的结合使用

1.导入依赖

com.github.userswlwork:pull-to-refresh:1.0.0com.youth.banner:banner:1.4.9

2.写布局（注意：两个布局是分开写的，在java代码中添加到一起）

    <com.handmark.pulltorefresh.library.PullToRefreshListView        android:id="@+id/listview"        android:layout_width="match_parent"        android:layout_height="match_parent" />

3.再写一个banner的xml

    <com.youth.banner.Banner        android:id="@+id/banner"        android:layout_width="match_parent"        android:layout_height="200dp" />

4.请求数据加载数据

 //请求数据方法    private void initDa(String url) {        new Asynctack().execute(url);    }    //创建异步请求数据类    class Asynctack extends AsyncTask<String, Void, String> {        //此方法执行在子线程        @Override        protected String doInBackground(String... params) {            return ls.getString(params[0]);        }        //此方法执行在主线程用于更新UI        @Override        protected void onPostExecute(String s) {            super.onPostExecute(s);            Gson gson = new Gson();            Bean bean = gson.fromJson(s, Bean.class);            List<Bean.DataBean> data = bean.getData();            List<Bean.DataScrollBean> dataScroll = bean.getDataScroll();            for (int i = 0; i < dataScroll.size(); i++) {                list.add("http://www.93.gov.cn" + dataScroll.get(i).getIMAGEURL());            }            banner.setImages(list);            banner.setImageLoader(new MyImageLoader());            banner.start();            jsonlist.addAll(data);            madapter.notifyDataSetChanged();            refreshListView.onRefreshComplete();        }    }

5.添加适配器（适配器的布局是一个imageview和TextView）

    class Madapter extends BaseAdapter {        @Override        public int getCount() {            return jsonlist.size();        }        @Override        public Object getItem(int position) {            return jsonlist.get(position);        }        @Override        public long getItemId(int position) {            return position;        }        @Override        public View getView(int position, View convertView, ViewGroup parent) {            ViewHolder viewHolder;            if (convertView == null) {                viewHolder = new ViewHolder();                convertView = View.inflate(getActivity(), R.layout.item, null);                viewHolder.tupian = convertView.findViewById(R.id.tupian);                viewHolder.titles = convertView.findViewById(R.id.wenzi);                convertView.setTag(viewHolder);            } else {                viewHolder = (ViewHolder) convertView.getTag();            }            ImageLoader instance = ImageLoader.getInstance();            if (jsonlist.get(position).getIMAGEURL() != null) {                ImageLoader.getInstance().displayImage((String) jsonlist.get(position).getIMAGEURL(), viewHolder.tupian, ImageloaderUtil.getImageOptions());            }            viewHolder.titles.setText(jsonlist.get(position).getTITLE());            return convertView;        }    }    class ViewHolder {        ImageView tupian;        TextView titles;    }

6.`给PullToRefreshListVie向上转型，并加载banner的视图

//实例化头布局        View view1 = View.inflate(getActivity(), R.layout.head_view, null);        //初始化头布局Banner控件        banner = (Banner) view1.findViewById(R.id.banner);        //初始化PullTORefreshListView        refreshListView = (PullToRefreshListView) view.findViewById(R.id.listview);        //向上转型，给父控件添加头布局        ListView listView = refreshListView.getRefreshableView();        //添加头布局        listView.addHeaderView(view1);        //设置上下拉模式        refreshListView.setMode(PullToRefreshBase.Mode.BOTH);        //实例化适配器        madapter = new Madapter();        //PRL关联适配器        refreshListView.setAdapter(madapter);

7.给PullToRefreshListVie添加上下拉监听

 //PRL上下拉监听        refreshListView.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ListView>() {            //此方法用于下拉做逻辑处理            @Override            public void onPullDownToRefresh(PullToRefreshBase<ListView> pullToRefreshBase) {                jsonlist.clear();                initDa(url);            }            //此方法用于上拉做逻辑处理            @Override            public void onPullUpToRefresh(PullToRefreshBase<ListView> pullToRefreshBase) {                int index = ima * 20;                ima++;                String url2 = "http://www.93.gov.cn/93app/data.do?channelId=0&startNum=" + index;                Toast.makeText(getActivity(), url2 + "", Toast.LENGTH_SHORT).show();                initDa(url2);            }        });