使用addHeaderView给PulltoRefreshListView的添加Banner

import android.content.Context;import android.os.AsyncTask;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.ListView;import android.widget.TextView;import com.google.gson.Gson;import com.handmark.pulltorefresh.library.PullToRefreshBase;import com.handmark.pulltorefresh.library.PullToRefreshListView;import com.nostra13.universalimageloader.core.ImageLoader;import com.youth.banner.Banner;import java.util.ArrayList;import java.util.List;public class MainActivity extends AppCompatActivity {    private PullToRefreshListView pull;    String httpUrl="http://www.meirixue.com/api.php?c=index&a=index";    List<Bean.DataBean.SliderBean> getlist = new ArrayList<>();    private MyBaseAdapter my;    private ImageLoader instance;    private ListView refreshableView;    private Banner ban;    List<String> listimg = new ArrayList<String>();    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        pull = (PullToRefreshListView) findViewById(R.id.pull_refresh_list);        pull.setMode(PullToRefreshBase.Mode.BOTH);        my = new MyBaseAdapter();        pull.setAdapter(my);        getAsyncTask();        instance = ImageLoader.getInstance();        //通过getRefreshableView()来得到一个listview对象        refreshableView = pull.getRefreshableView();        //获取Banner的布局        View inflate = View.inflate(MainActivity.this, R.layout.f2, null);         //获取控件        ban = (Banner)inflate.findViewById(R.id.ban);        //refreshableView来添加头文件        refreshableView.addHeaderView(inflate);        //pull的点击事件 上拉 下拉        pull.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ListView>() {            @Override            public void onPullDownToRefresh(PullToRefreshBase<ListView> pullToRefreshBase) {                getlist.clear();                getAsyncTask();            }            @Override            public void onPullUpToRefresh(PullToRefreshBase<ListView> pullToRefreshBase) {                getAsyncTask();            }        });    }    //执行banner的方法    public void getban(){        ban.setImageLoader(new Mode());//配置重写好的加载图片的类        ban.setImages(listimg);//需要传入一个图片地址的集合        ban.start();   //开启轮播                    }    /**     * 这个类是Banner中的一个类;我们进行重写;     */    class Mode extends com.youth.banner.loader.ImageLoader{        //这个就是专门让我们重写,加载图片的具体逻辑        @Override        public void displayImage(Context context, Object path, ImageView imageView) {            //调用图片的全局适配            ImageLoader.getInstance().displayImage((String)path,imageView);        }    }    class  MyBaseAdapter extends BaseAdapter{        @Override        public int getCount() {            return getlist.size();        }        @Override        public Object getItem(int i) {            return null;        }        @Override        public long getItemId(int i) {            return 0;        }        @Override        public View getView(int i, View view, ViewGroup viewGroup) {            if(view==null){                view = View.inflate(MainActivity.this, R.layout.f1, null);            }            ImageView img = view.findViewById(R.id.img);            TextView tv = view.findViewById(R.id.tv);            tv.setText(getlist.get(i).getTitle());            instance.displayImage(getlist.get(i).getImg(),img);            return view;        }    }    public void getAsyncTask(){        new MyAsyncTask().execute(httpUrl);    }   class MyAsyncTask extends AsyncTask<String,Void,String>{       @Override       protected String doInBackground(String... strings) {           return IToos.ioss(strings[0]);       }       @Override       protected void onPostExecute(String s) {           super.onPostExecute(s);           Gson g=new Gson();           Bean bean = g.fromJson(s, Bean.class);           List<Bean.DataBean.SliderBean> slider = bean.getData().getSlider();           getlist.addAll(slider);           my.notifyDataSetChanged();           pull.onRefreshComplete();            //获取banner的图片路径            List<Bean.DataBean.HotcategoryBean> hotcategory = bean.getData().getHotcategory();            for (int i=0;i<hotcategory.size();i++){                //取出路径                String img = hotcategory.get(i).getImg();                listimg.add(img);//添加            }           getban();//调用banner的方法       }   }}