XlistView基础运用(下拉刷新,上拉加载,listview优化)

在布局文件中创建xlistview控件

<com.bwie.xlistviewlibrary.View.XListView        android:id="@+id/xlv"        android:layout_width="match_parent"        android:layout_height="match_parent"/>

实现XListView.IXListViewListener接口

public class MainActivity extends AppCompatActivity implements XListView.IXListViewListener {

有网络图片,创建ImageLoader实例(要初始化组件),设置适配器,然后联网请求数据

//初始化组件(配置name属性)import android.app.Application;import com.nostra13.universalimageloader.core.ImageLoader;import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;/** * author:Created by WangZhiQiang on 2017-10-10. * 系统启动 会先运行这个MApp,所以我们在这里进行初始化 框架 组件等等; */public class MApp extends Application{    @Override    public void onCreate() {        super.onCreate();        //初始化组件        ImageLoaderConfiguration configuration = new ImageLoaderConfiguration.Builder(this).build();        ImageLoader.getInstance().init(configuration);    }}

设置xlistview上拉加载的功能和把实现类设在接口回调中

xListView.setPullLoadEnable(true);  //让XListView有上拉加载的功能;        xListView.setXListViewListener(this);// 接口回调要把接口实现类设置进去, MainActivity就是(XListViewListener)它的实现了

import android.os.AsyncTask;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.TextView;import com.bwie.xlistviewlibrary.View.XListView;import com.bwie.xlistviewlibrary.utils.NetWordUtils;import com.google.gson.Gson;import com.nostra13.universalimageloader.core.ImageLoader;import java.util.ArrayList;import java.util.List;/** * 实现IXListView接口; */public class MainActivity extends AppCompatActivity implements XListView.IXListViewListener {    String url = "http://api.fang.anjuke.com/m/android/1.3/shouye/recInfosV3/?city_id=14&lat=40.04652&lng=116.306033&api_key=androidkey&sig=9317e9634b5fbc16078ab07abb6661c5&macid=45cd2478331b184ff0e15f29aaa89e3e&app=a-ajk&_pid=11738&o=PE-TL10-user+4.4.2+HuaweiPE-TL10+CHNC00B260+ota-rel-keys%2Crelease-keys&from=mobile&m=Android-PE-TL10&cv=9.5.1&cid=14&i=864601026706713&v=4.4.2&pm=b61&uuid=1848c59c-185d-48d9-b0e9-782016041109&_chat_id=0&qtime=20160411091603";    private XListView xListView;    List<Goods.ResultBean.RowsBean> list = new ArrayList<>(); //大集合    private MAdapter mAdapter;    private ImageLoader imageLoaderInstances;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        xListView = (XListView) findViewById(R.id.xlv);        imageLoaderInstances = ImageLoader.getInstance();        mAdapter = new MAdapter();        xListView.setAdapter(mAdapter);        getNetData();//联网请求数据        xListView.setPullLoadEnable(true);  //让XListView有上拉加载的功能;        xListView.setXListViewListener(this);// 接口回调要把接口实现类设置进去, MainActivity就是(XListViewListener)它的实现了    }    private void getNetData() {        new MAsyncTask().execute(url);    }    class MAsyncTask extends AsyncTask<String, Void, String> {        @Override        protected String doInBackground(String... strings) {            return NetWordUtils.getNetjson(strings[0]);        }        @Override        protected void onPostExecute(String s) {            super.onPostExecute(s);            Gson gson = new Gson();            Goods goods = gson.fromJson(s, Goods.class);            //得到集合;            List<Goods.ResultBean.RowsBean> rows = goods.getResult().getRows();            //把从网络解析的数据放到adapter使用的集合里;            list.addAll(rows);            mAdapter.notifyDataSetChanged();            uiComplete();// 让刷新头 或者刷新底部ui返回;        }    }    class MAdapter extends BaseAdapter {        private ViewHolder viewHolder;        @Override        public int getCount() {            return list.size();        }        @Override        public Object getItem(int i) {            return list.get(i);        }        @Override        public long getItemId(int i) {            return i;        }        @Override        public View getView(int i, View view, ViewGroup viewGroup) {            if (view == null) {                viewHolder = new ViewHolder();                view = View.inflate(MainActivity.this, R.layout.listview, null);                viewHolder.tv = (TextView) view.findViewById(R.id.textView);                viewHolder.iv = (ImageView) view.findViewById(R.id.imageView);                view.setTag(viewHolder);            }else{                viewHolder= (ViewHolder) view.getTag();            }            viewHolder.tv.setText(list.get(i).getInfo().getLoupan_name());            imageLoaderInstances.displayImage(list.get(i).getInfo().getDefault_image(),viewHolder.iv);            return view;        }    }    class ViewHolder {        ImageView iv;        TextView tv;    }    /**     * 下拉刷新     */    @Override    public void onRefresh() {        list.clear();        getNetData();    }    /**     * 上啦加载     */    @Override    public void onLoadMore() {        getNetData();    }    /**     * 让刷新头 或者刷新底部ui返回;     */    private  void uiComplete(){        xListView.stopRefresh();//停止刷新        xListView.stopLoadMore();//停止上拉加载更多        xListView.setRefreshTime("刚刚");    }}