XListView

最新推荐文章于 2019-01-09 20:30:06 发布
原创最新推荐文章于 2019-01-09 20:30:06 发布 · 318 阅读
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<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/drawerLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <com.bwie.xlistviewlibrary.View.XListView
        android:id="@+id/xlv"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>
    <ListView
        android:id="@+id/lv"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:choiceMode="singleChoice" />


</android.support.v4.widget.DrawerLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:gravity="center"
    >

    <ImageView
        android:id="@+id/image"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@mipmap/ic_launcher"
        />

    <TextView
        android:id="@+id/text1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="20dp"
        />

</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">


    <TextView
        android:id="@+id/text2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="20dp"
        />

</LinearLayout>

GetJson

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

/**
 * Created by Administrator on 2017/10/11.
 */

public class GetJson {

    private String str="";

    public String getJson(String JSON_URL){
        try {
            URL url=new URL(JSON_URL);
            HttpURLConnection connection= (HttpURLConnection) url.openConnection();
            connection.setConnectTimeout(5000);
            connection.setReadTimeout(5000);
            int rescode=connection.getResponseCode();
            if(rescode==200){
                InputStream inputStream=connection.getInputStream();
                byte[] b=new byte[1024];
                int index=0;

                while((index=inputStream.read(b))!=-1){
                    str+=new String(b,0,index);
                }
            }

        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }


        return str;
    }

}

MainActivity

import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

import com.bwie.xlistviewlibrary.View.XListView;
import com.google.gson.Gson;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity implements XListView.IXListViewListener{


    private static final String JSON_URL="http://www.yulin520.com/a2a/impressApi/news/mergeList?pageSize=10&page=1";
    private XListView xlistview;
    private List<JavaBean.DataBean> list;
    private MyAdapter adapter;
    private ListView listview;
    private List<String> dlist;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        xlistview=(XListView)findViewById(R.id.xlv);
        listview=(ListView)findViewById(R.id.xlv);
        xlistview.setPullLoadEnable(true);//设置可以刷新和加载
        xlistview.setXListViewListener(this);
        init();
    }

    public void init(){
        dlist=new ArrayList<String>();
        for (int i = 0; i < 10; i++) {
            dlist.add("周考2练习"+i);
        }
        listview.setAdapter(new ArrayAdapter<String>(MainActivity.this,android.R.layout.simple_list_item_1,dlist));



        //加载第一版数据
        new AsyncTask<String,Integer,String>() {
            @Override
            protected String doInBackground(String... params) {
                String str=new GetJson().getJson(JSON_URL);

                return str;
            }

            @Override
            protected void onPostExecute(String s) {
                Gson gson=new Gson();
                JavaBean javabean=gson.fromJson(s,JavaBean.class);
                list=javabean.getData();
                adapter=new MyAdapter(list,MainActivity.this);
                xlistview.setAdapter(adapter);

            }
        }.execute();
    }

    /**
     * 停止刷新或加载时
     */
    public void onLoad(){
        xlistview.stopRefresh();
        xlistview.stopLoadMore();
        xlistview.setRefreshTime("刚刚");
    }

    /**
     * 下拉会回调此方法，在次方法中写刷新的代码
     */
    @Override
    public void onRefresh() {
        Toast.makeText(this,"刷新",Toast.LENGTH_SHORT).show();
        new AsyncTask<String,Integer,String>() {
            @Override
            protected String doInBackground(String... params) {
                String str=new GetJson().getJson(JSON_URL);

                return str;
            }

            @Override
            protected void onPostExecute(String s) {
                Gson gson=new Gson();
                JavaBean javabean=gson.fromJson(s,JavaBean.class);
                list=javabean.getData();
                adapter=new MyAdapter(list,MainActivity.this);
                xlistview.setAdapter(adapter);
                onLoad();
            }
        }.execute();

    }

    /**
     * 上拉到listview的最后一条显示出来，然后会调用此方法，在此方法中加载下一页数据
     */
    @Override
    public void onLoadMore() {
        new AsyncTask<String,Integer,String>() {
            @Override
            protected String doInBackground(String... params) {
                String str=new GetJson().getJson(JSON_URL);

                return str;
            }

            @Override
            protected void onPostExecute(String s) {
                Gson gson=new Gson();
                JavaBean javabean=gson.fromJson(s,JavaBean.class);
                List<JavaBean.DataBean> datalist=javabean.getData();
                list.addAll(datalist);
                adapter.notifyDataSetChanged();
                onLoad();
            }
        }.execute();

    }
}

//适配器

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.nostra13.universalimageloader.core.ImageLoader;

import java.util.List;

/**
 * Created by Administrator on 2017/10/11.
 */

public class MyAdapter extends BaseAdapter {
    private List<JavaBean.DataBean> list;
    private Context context;

    private final int type0=0;
    private final int type1=1;

    public MyAdapter(List<JavaBean.DataBean> list, Context context) {
        this.list = list;
        this.context = context;
    }

    @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 int getViewTypeCount() {
        return 2;
    }

    @Override
    public int getItemViewType(int position) {

        return position%2;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        int i=getItemViewType(position);
        Holder1 holder1;
        Holder2 holder2;
        switch (i){
            case type0:
                if(convertView==null){
                    convertView=View.inflate(context,R.layout.item1,null);
                    holder1=new Holder1();
                    holder1.image=(ImageView)convertView.findViewById(R.id.image);
                    holder1.text1=(TextView)convertView.findViewById(R.id.text1);
                    convertView.setTag(holder1);
                }else{
                    holder1=(Holder1)convertView.getTag();
                }

                ImageLoader imageLoader=ImageLoader.getInstance();
                imageLoader.displayImage(list.get(position).getImg(),holder1.image);
                holder1.text1.setText(list.get(position).getTitle());

                break;
            case type1:
                if(convertView==null){
                    convertView=View.inflate(context,R.layout.item2,null);
                    holder2=new Holder2();

                    holder2.text2=(TextView)convertView.findViewById(R.id.text2);
                    convertView.setTag(holder2);
                }else{
                    holder2=(Holder2)convertView.getTag();
                }


                holder2.text2.setText(list.get(position).getTitle());


                break;
        }


        return convertView;
    }

    class Holder1{
        ImageView image;
        TextView text1;
    }

    class Holder2{

        TextView text2;
    }

}