一个综合案例

package com.example.lixin.lixin1506a20170728;
/**
 *
 * 主界面 显示轮播图 和 多条目展示
 *
 * 姓名 李鑫
 *
 * 时间 20170728 16.41
 *
 */

import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.bumptech.glide.Glide;
import com.example.lixin.lixin1506a20170728.bean.PicInfo;
import com.example.lixin.lixin1506a20170728.utils.NetWorkUtils;
import com.example.lixin.lixin1506a20170728.utils.StreamTools;
import com.google.gson.Gson;
import com.limxing.xlistview.view.XListView;
import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.youth.banner.Banner;
import com.youth.banner.BannerConfig;

import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity implements XListView.IXListViewListener {

    private XListView xlv;
    private ViewPager vp;
    private int index = 1;
    private boolean flag;
    private MyBaseAdapter adapter;
    private DisplayImageOptions options;
    private Banner banner;
    private List<String> listvp;
     String arr[] = {
             "https://img10.360buyimg.com/da/jfs/t4747/277/1368712300/170619/35098d7f/58f038e0N9b3a0ca5.jpg",
             "https://img14.360buyimg.com/da/jfs/t4915/21/1427207714/81116/b005bb06/58f08963Ndb295b3c.jpg",
             "https://img13.360buyimg.com/da/jfs/t4651/104/2867456043/68336/99da4c16/58f41eaeN5b614a63.jpg"
     };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //得到数据
        if (NetWorkUtils.isConnection(this)){
            getData("http://qhb.2dyt.com/Bwei/news",index+"",5+"");
        }else {
            showDilog();
        }

        initView();
        options = new DisplayImageOptions.Builder()
                .cacheInMemory(true)
                .cacheOnDisk(true)
                //设置一个加载时显示的默认图片
                .showImageOnLoading(R.mipmap.ic_launcher)
                .build();


    }
    public void initView(){
        //得到控件
        xlv = (XListView) findViewById(R.id.xlv);
        xlv.setPullLoadEnable(true);
        xlv.setXListViewListener(this);
        //listview条目的点击事件 阻塞线程
        xlv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                while(true){

                }
            }
        });

        //banner轮播图
        banner = (Banner) findViewById(R.id.banner);
        //创建集合
        ArrayList<String> list = new ArrayList<>();
        //把数据添加到集合当中
        for (String s : arr){
            list.add(s);
        }
        banner.setImageLoader(new GlideImageLoader());
        //添加图片
        banner.setImages(list);
        //设置轮播模式
        banner.setBannerStyle(BannerConfig.CIRCLE_INDICATOR);
        //设置切换的时间
        banner.setDelayTime(2000);
        //开始轮播
        banner.start();

    }
    public class GlideImageLoader extends com.youth.banner.loader.ImageLoader{

        public void displayImage(Context context, Object path, ImageView imageView) {
            Glide.with(context).load(path).into(imageView);
        }
    }

    private void getData(String path, String page, String type) {
        //异步获取数据
        new AsyncTask<String, Void, String>() {

            @Override
            protected void onPostExecute(String s) {
                super.onPostExecute(s);
                if (s != null) {

                    Gson gson = new Gson();
                    //得到数据
                    PicInfo picInfo = gson.fromJson(s, PicInfo.class);
                    listvp = picInfo.getListViewPager();
                    List<PicInfo.ListBean> list = picInfo.getList();
                    //判断并把数据发送给适配器
                    if (adapter==null) {
                        adapter = new MyBaseAdapter(list);
                        xlv.setAdapter(adapter);
                    }else {
                        adapter.loadMore(list,flag);
                        adapter.notifyDataSetChanged();
                    }
                }
            }

            @Override
            protected String doInBackground(String... params) {

                try {
                    String path = params[0];
                    String page = params[1];
                    String type = params[2];
                    URL url = new URL(path);

                    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
                    //请求方式
                    connection.setRequestMethod("POST");
                    connection.setConnectTimeout(5000);
                    connection.setReadTimeout(5000);

                    OutputStream os = connection.getOutputStream();
                    os.write(("postkey=ff1d1AK&page=" + page + "&type=" + type).getBytes());
                    os.flush();

                    int code = connection.getResponseCode();
                    if (code == 200) {
                        //得到数据
                        InputStream is = connection.getInputStream();
                        //转换成字符串
                        String json = StreamTools.readFrom(is);
                        System.out.println("------------------"+json);
                        return json;
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
                return null;
            }
        }.execute(path, page, type);

    }
    //下拉刷新
    @Override
    public void onRefresh() {
        ++index;
        getData("http://qhb.2dyt.com/Bwei/news",index+"",5+"");
        flag =true;
        xlv.stopRefresh(true);
    }
    //上拉加载
    @Override
    public void onLoadMore() {
        ++index;
        getData("http://qhb.2dyt.com/Bwei/news",index+"",5+"");
        flag = false;
        xlv.stopLoadMore();
    }
    //适配器
    class MyBaseAdapter extends BaseAdapter {

        private List<PicInfo.ListBean> list;
        //接受传过来的值
        private MyBaseAdapter(List<PicInfo.ListBean> list) {
            this.list = list;
        }

        private void loadMore(List<PicInfo.ListBean> lists,boolean flag){
            for(PicInfo.ListBean bean : lists){

                if (flag){
                    list.add(0,bean);
                }else {
                    list.add(bean);
                }
            }

        }

        @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() {
            //多类型的数量
            return 2;
        }

        @Override
        public int getItemViewType(int position) {
            //判断显示多类型
            if (list.get(position).getType()==2) {

                return 0;

            } else {

                return 1;

            }


        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ViewHolder holder = null;
            ViewHolder2 holder2 = null;
            int type = list.get(position).getType();
            System.out.println("-------------" + type);
            switch (getItemViewType(position)) {
                case 0:

                    if (convertView == null) {

                        convertView = View.inflate(MainActivity.this, R.layout.item, null);
                        //优化
                        holder = new ViewHolder();
                        //得到控件
                        holder.tv = (TextView) convertView.findViewById(R.id.item_tv);
                        holder.iv = (ImageView) convertView.findViewById(R.id.item_iv);
                        convertView.setTag(holder);
                    } else {
                        holder = (ViewHolder) convertView.getTag();
                    }
                        //添加数据
                        holder.tv.setText("title : " + list.get(position).getTitle());
                        String path = list.get(position).getPic();
                        String[] path1 = path.trim().split("\\|");
                        ImageLoader.getInstance().displayImage(path1[0], holder.iv, options);
                    break;


                case 1:
                    if (convertView == null) {
                        convertView = View.inflate(MainActivity.this, R.layout.item2, null);
                        //优化
                        holder2 = new ViewHolder2();
                        //得到控件
                        holder2.tv = (TextView) convertView.findViewById(R.id.item2_tv);
                        holder2.iv = (ImageView) convertView.findViewById(R.id.item2_iv1);
                        holder2.iv1 = (ImageView) convertView.findViewById(R.id.item2_iv2);
                        holder2.iv2 = (ImageView) convertView.findViewById(R.id.item2_iv3);
                        holder2.iv3 = (ImageView) convertView.findViewById(R.id.item2_iv4);
                        convertView.setTag(holder2);
                    } else {
                        holder2 = (ViewHolder2) convertView.getTag();
                    }
                        //添加数据
                        holder2.tv.setText("title: " + list.get(position).getTitle());
                        String path2 = list.get(position).getPic();
                        String[] path3 = path2.trim().split("\\|");
                        ImageLoader.getInstance().displayImage(path3[0], holder2.iv, options);
                        ImageLoader.getInstance().displayImage(path3[1], holder2.iv1, options);
                        ImageLoader.getInstance().displayImage(path3[2], holder2.iv2, options);
                        ImageLoader.getInstance().displayImage(path3[3], holder2.iv3, options);
                    break;
            }
            return convertView;
        }

        class ViewHolder {
            TextView tv;
            ImageView iv;
        }

        class ViewHolder2 {
            TextView tv;
            ImageView iv, iv1, iv2, iv3;
        }
    }
    public void showDilog(){

        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("没有网络");
        builder.setNegativeButton("取消",null);
        builder.setPositiveButton("设置", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Intent intent = new Intent();
                intent.setAction("android.settings.WIRELESS_SETTINGS");
                startActivity(intent);
            }
        });
        builder.create().show();
    }
}package com.example.lixin.lixin1506a20170728;
/**
 *
 * 主界面 显示轮播图 和 多条目展示
 *
 * 姓名 李鑫
 *
 * 时间 20170728 16.41
 *
 */

import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.bumptech.glide.Glide;
import com.example.lixin.lixin1506a20170728.bean.PicInfo;
import com.example.lixin.lixin1506a20170728.utils.NetWorkUtils;
import com.example.lixin.lixin1506a20170728.utils.StreamTools;
import com.google.gson.Gson;
import com.limxing.xlistview.view.XListView;
import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.youth.banner.Banner;
import com.youth.banner.BannerConfig;

import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity implements XListView.IXListViewListener {

    private XListView xlv;
    private ViewPager vp;
    private int index = 1;
    private boolean flag;
    private MyBaseAdapter adapter;
    private DisplayImageOptions options;
    private Banner banner;
    private List<String> listvp;
     String arr[] = {
             "https://img10.360buyimg.com/da/jfs/t4747/277/1368712300/170619/35098d7f/58f038e0N9b3a0ca5.jpg",
             "https://img14.360buyimg.com/da/jfs/t4915/21/1427207714/81116/b005bb06/58f08963Ndb295b3c.jpg",
             "https://img13.360buyimg.com/da/jfs/t4651/104/2867456043/68336/99da4c16/58f41eaeN5b614a63.jpg"
     };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //得到数据
        if (NetWorkUtils.isConnection(this)){
            getData("http://qhb.2dyt.com/Bwei/news",index+"",5+"");
        }else {
            showDilog();
        }

        initView();
        options = new DisplayImageOptions.Builder()
                .cacheInMemory(true)
                .cacheOnDisk(true)
                //设置一个加载时显示的默认图片
                .showImageOnLoading(R.mipmap.ic_launcher)
                .build();


    }
    public void initView(){
        //得到控件
        xlv = (XListView) findViewById(R.id.xlv);
        xlv.setPullLoadEnable(true);
        xlv.setXListViewListener(this);
        //listview条目的点击事件 阻塞线程
        xlv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                while(true){

                }
            }
        });

        //banner轮播图
        banner = (Banner) findViewById(R.id.banner);
        //创建集合
        ArrayList<String> list = new ArrayList<>();
        //把数据添加到集合当中
        for (String s : arr){
            list.add(s);
        }
        banner.setImageLoader(new GlideImageLoader());
        //添加图片
        banner.setImages(list);
        //设置轮播模式
        banner.setBannerStyle(BannerConfig.CIRCLE_INDICATOR);
        //设置切换的时间
        banner.setDelayTime(2000);
        //开始轮播
        banner.start();

    }
    public class GlideImageLoader extends com.youth.banner.loader.ImageLoader{

        public void displayImage(Context context, Object path, ImageView imageView) {
            Glide.with(context).load(path).into(imageView);
        }
    }

    private void getData(String path, String page, String type) {
        //异步获取数据
        new AsyncTask<String, Void, String>() {

            @Override
            protected void onPostExecute(String s) {
                super.onPostExecute(s);
                if (s != null) {

                    Gson gson = new Gson();
                    //得到数据
                    PicInfo picInfo = gson.fromJson(s, PicInfo.class);
                    listvp = picInfo.getListViewPager();
                    List<PicInfo.ListBean> list = picInfo.getList();
                    //判断并把数据发送给适配器
                    if (adapter==null) {
                        adapter = new MyBaseAdapter(list);
                        xlv.setAdapter(adapter);
                    }else {
                        adapter.loadMore(list,flag);
                        adapter.notifyDataSetChanged();
                    }
                }
            }

            @Override
            protected String doInBackground(String... params) {

                try {
                    String path = params[0];
                    String page = params[1];
                    String type = params[2];
                    URL url = new URL(path);

                    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
                    //请求方式
                    connection.setRequestMethod("POST");
                    connection.setConnectTimeout(5000);
                    connection.setReadTimeout(5000);

                    OutputStream os = connection.getOutputStream();
                    os.write(("postkey=ff1d1AK&page=" + page + "&type=" + type).getBytes());
                    os.flush();

                    int code = connection.getResponseCode();
                    if (code == 200) {
                        //得到数据
                        InputStream is = connection.getInputStream();
                        //转换成字符串
                        String json = StreamTools.readFrom(is);
                        System.out.println("------------------"+json);
                        return json;
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
                return null;
            }
        }.execute(path, page, type);

    }
    //下拉刷新
    @Override
    public void onRefresh() {
        ++index;
        getData("http://qhb.2dyt.com/Bwei/news",index+"",5+"");
        flag =true;
        xlv.stopRefresh(true);
    }
    //上拉加载
    @Override
    public void onLoadMore() {
        ++index;
        getData("http://qhb.2dyt.com/Bwei/news",index+"",5+"");
        flag = false;
        xlv.stopLoadMore();
    }
    //适配器
    class MyBaseAdapter extends BaseAdapter {

        private List<PicInfo.ListBean> list;
        //接受传过来的值
        private MyBaseAdapter(List<PicInfo.ListBean> list) {
            this.list = list;
        }

        private void loadMore(List<PicInfo.ListBean> lists,boolean flag){
            for(PicInfo.ListBean bean : lists){

                if (flag){
                    list.add(0,bean);
                }else {
                    list.add(bean);
                }
            }

        }

        @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() {
            //多类型的数量
            return 2;
        }

        @Override
        public int getItemViewType(int position) {
            //判断显示多类型
            if (list.get(position).getType()==2) {

                return 0;

            } else {

                return 1;

            }


        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ViewHolder holder = null;
            ViewHolder2 holder2 = null;
            int type = list.get(position).getType();
            System.out.println("-------------" + type);
            switch (getItemViewType(position)) {
                case 0:

                    if (convertView == null) {

                        convertView = View.inflate(MainActivity.this, R.layout.item, null);
                        //优化
                        holder = new ViewHolder();
                        //得到控件
                        holder.tv = (TextView) convertView.findViewById(R.id.item_tv);
                        holder.iv = (ImageView) convertView.findViewById(R.id.item_iv);
                        convertView.setTag(holder);
                    } else {
                        holder = (ViewHolder) convertView.getTag();
                    }
                        //添加数据
                        holder.tv.setText("title : " + list.get(position).getTitle());
                        String path = list.get(position).getPic();
                        String[] path1 = path.trim().split("\\|");
                        ImageLoader.getInstance().displayImage(path1[0], holder.iv, options);
                    break;


                case 1:
                    if (convertView == null) {
                        convertView = View.inflate(MainActivity.this, R.layout.item2, null);
                        //优化
                        holder2 = new ViewHolder2();
                        //得到控件
                        holder2.tv = (TextView) convertView.findViewById(R.id.item2_tv);
                        holder2.iv = (ImageView) convertView.findViewById(R.id.item2_iv1);
                        holder2.iv1 = (ImageView) convertView.findViewById(R.id.item2_iv2);
                        holder2.iv2 = (ImageView) convertView.findViewById(R.id.item2_iv3);
                        holder2.iv3 = (ImageView) convertView.findViewById(R.id.item2_iv4);
                        convertView.setTag(holder2);
                    } else {
                        holder2 = (ViewHolder2) convertView.getTag();
                    }
                        //添加数据
                        holder2.tv.setText("title: " + list.get(position).getTitle());
                        String path2 = list.get(position).getPic();
                        String[] path3 = path2.trim().split("\\|");
                        ImageLoader.getInstance().displayImage(path3[0], holder2.iv, options);
                        ImageLoader.getInstance().displayImage(path3[1], holder2.iv1, options);
                        ImageLoader.getInstance().displayImage(path3[2], holder2.iv2, options);
                        ImageLoader.getInstance().displayImage(path3[3], holder2.iv3, options);
                    break;
            }
            return convertView;
        }

        class ViewHolder {
            TextView tv;
            ImageView iv;
        }

        class ViewHolder2 {
            TextView tv;
            ImageView iv, iv1, iv2, iv3;
        }
    }
    public void showDilog(){

        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("没有网络");
        builder.setNegativeButton("取消",null);
        builder.setPositiveButton("设置", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Intent intent = new Intent();
                intent.setAction("android.settings.WIRELESS_SETTINGS");
                startActivity(intent);
            }
        });
        builder.create().show();
    }

}