XListView上拉載入,下拉重新整理
阿新 • • 發佈:2018-12-20
第一步:依賴自定義元件XlistView 第二步:佈局引入XlistView元件(自定義元件根目錄)
<com.exam.myxlistviewlibrary.utils.view.XListView
android:id="@+id/frag_01_xlv"
android:layout_width="match_parent"
android:layout_height="match_parent">
</com.exam.myxlistviewlibrary.utils.view.XListView>
第三步:配置Adapter(與listview相同).滑動監聽setXlistViewlistenner
package com.exam.week_02.frag; import android.os.AsyncTask; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.view.LayoutInflater; 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.exam.myxlistviewlibrary.utils.NetWordUtils; import com.exam.myxlistviewlibrary.utils.view.XListView; import com.exam.week_02.ImageloaderUtil; import com.exam.week_02.R; import com.exam.week_02.bena.Data; import com.exam.week_02.bena.Goods; import com.google.gson.Gson; import com.nostra13.universalimageloader.core.DisplayImageOptions; import com.nostra13.universalimageloader.core.ImageLoader; import java.util.ArrayList; public class Fragment_01 extends Fragment { String baseUrl = "http://api.expoon.com/AppNews/getNewsList/type/1/p/"; private XListView xListView; ArrayList<Data> list = new ArrayList<Data>(); int page; private MyAdapter myAdapter; private ImageLoader instance; @Nullable @Override public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { View view = inflater.inflate(R.layout.frag_01,container,false); xListView = view.findViewById(R.id.frag_01_xlv); instance = ImageLoader.getInstance(); initdata(page); myAdapter = new MyAdapter(); xListView.setPullLoadEnable(true); xListView.setXListViewListener(new XListView.IXListViewListener() { @Override public void onRefresh() { list.clear(); initdata(0); } @Override public void onLoadMore() { page++; initdata(page); } }); return view; } private void initdata(int s) { String url = baseUrl+s; new MyAsyntask().execute(url); } class MyAsyntask extends AsyncTask<String,Void,String>{ @Override protected String doInBackground(String... strings) { String netjson = NetWordUtils.getNetjson(strings[0]); return netjson; } @Override protected void onPostExecute(String s) { super.onPostExecute(s); Gson gson = new Gson(); Goods goods = gson.fromJson(s, Goods.class); ArrayList<Data> data = goods.getData(); list.addAll(data); xListView.setAdapter(myAdapter); myAdapter.notifyDataSetChanged(); uiComplete(); } } class MyAdapter extends BaseAdapter{ @Override public int getViewTypeCount() { return 2; } @Override public int getItemViewType(int position) { return position % 2; } @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) { int itemViewType = getItemViewType(position); switch (itemViewType){ case 0: convertView = View.inflate(getActivity(),R.layout.item00,null); TextView textView = convertView.findViewById(R.id.item00_textView); ImageView imageView = convertView.findViewById(R.id.item00_image); textView.setText(list.get(position).getNews_title()); //DisplayImageOptions option = ImageloaderUtil.getDisplayImageOption(); instance.displayImage(list.get(position).getPic_url(),imageView); break; case 1: convertView = View.inflate(getActivity(),R.layout.item11,null); TextView textView1 = convertView.findViewById(R.id.item11_textView); textView1.setText(list.get(position).getNews_title()); break; } return convertView; } } public void uiComplete(){ xListView.setRefreshTime("剛剛"); xListView.stopRefresh(); //讓重新整理頭消失 xListView.stopLoadMore(); //讓上拉載入的ui消失; } }