福利的页面

//页面布局

    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#f56f98"
    >


            android:id="@+id/fuli_gridview"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:numColumns="2"

        />

//java代码



public class FuLiFragment extends Fragment {

    private View view;
    private PullToRefreshGridView gridview;

    private int page=1;

    private List list=new ArrayList<>();
    private MyBaseAdapter02 base02;


    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

        view = inflater.inflate(R.layout.fuli_shouye_fragment, null);

        //初始化页面
        initViews();
        return view;
    }


    //初始化页面
    private void initViews() {

//获取id
        gridview = view.findViewById(R.id.fuli_gridview);
//开始上拉刷新/下拉加载
        gridview.setMode(PullToRefreshBase.Mode.BOTH);

      gridview.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2() {
          @Override
          public void onPullDownToRefresh(PullToRefreshBase refreshView) {

      //刷新
              page=1;
              //加载网络数据
              getinitWl();

          }

          @Override
          public void onPullUpToRefresh(PullToRefreshBase refreshView) {

              page++;
              //加载网络数据
              getinitWl();
          }
      });



    }
//默认懒加载

    @Override
    public void setUserVisibleHint(boolean isVisibleToUser) {
        super.setUserVisibleHint(isVisibleToUser);

        if(isVisibleToUser){
            getinitWl();
        }
    }

//加载适配器

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

    //创建适配器

        base02 = new MyBaseAdapter02(getActivity(), list);
        gridview.setAdapter(base02);

    }


    //获取网络数据

public void getinitWl(){

    HttpUtils httpUtils = HttpUtils.getHttpUtils();
    httpUtils.get(HttpConfig.URL3);

 httpUtils.setHttpListener(new HttpUtils.HttpListener() {
     @Override
     public void getSuccess(String json) {

         Gson gson = new Gson();
         FuLiBean fuli = gson.fromJson(json, FuLiBean.class);

         if(page==1){
             list.clear();
         }

         list.addAll(fuli.getResults());
         //刷新适配器
        base02.notifyDataSetChanged();
        gridview.onRefreshComplete();
     }

     @Override
     public void getError(String error) {

     }
 });

}



    public static FuLiFragment create(String title) {
        Bundle bundle = new Bundle();
        bundle.putString("title",title);
        FuLiFragment fl = new FuLiFragment();
        fl.setArguments(bundle);
        return fl;

    }
}

//适配器

public class MyBaseAdapter02 extends BaseAdapter {

    private Context context;

    private List list;

    public MyBaseAdapter02(Context context, List list) {
        this.context = context;
        this.list = list;
    }

    @Override
    public int getCount() {
        return list.size();
    }

    @Override
    public Object getItem(int position) {
        return list.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder;
        if(convertView==null){

         convertView=View.inflate(context, R.layout.item_fuli,null);
             holder = new ViewHolder();
            holder.img=convertView.findViewById(R.id.fuli_img);
            convertView.setTag(holder);

        }else{
          holder=(ViewHolder) convertView.getTag();
        }

        String pic = list.get(position).getUrl();
        ImageLoader.getInstance().displayImage(pic,holder.img, MyApp.getOptions());


        return convertView;
    }


    class ViewHolder{
       ImageView img;

    }
}