Android 开发中PullToRefreshScrollView上拉刷新,Banner实现无限轮播

MainActivity:

package com.example.pulltorefreshview;import android.os.AsyncTask;import android.os.Bundle;import android.os.Handler;import android.support.v7.app.AppCompatActivity;import android.util.Log;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.ScrollView;import android.widget.TextView;import com.google.gson.Gson;import com.handmark.pulltorefresh.library.ILoadingLayout;import com.handmark.pulltorefresh.library.PullToRefreshBase;import com.handmark.pulltorefresh.library.PullToRefreshScrollView;import com.nostra13.universalimageloader.core.ImageLoader;import com.youth.banner.Banner;import java.io.BufferedReader;import java.io.InputStream;import java.io.InputStreamReader;import java.net.HttpURLConnection;import java.net.URL;import java.util.ArrayList;import java.util.List;public class MainActivity extends AppCompatActivity {    private PullToRefreshScrollView pull_rs;    private MyListview lv;    private StringBuilder builder;    int index = 1;    int type = 1;    List<Bean.DataBean> list = new ArrayList<>();    private MyAdapter adapter;    private List<String> list2;    private Banner banner;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        pull_rs = (PullToRefreshScrollView) findViewById(R.id.pull_rs);        banner = (Banner) findViewById(R.id.banner);        lv = (MyListview) findViewById(R.id.lv);        intRefreshScrollView();        init();    }    public void init() {        Mytask mytask = new Mytask();        mytask.execute("http://api.expoon.com/AppNews/getNewsList/type/1/p/1");    }    private void addToTop() {        type = 1;        Mytask mytask = new Mytask();        mytask.execute("http://api.expoon.com/AppNews/getNewsList/type/1/p/1");    }    private void addToBottom() {        type = 2;        index++;        Mytask mytask = new Mytask();        mytask.execute("http://api.expoon.com/AppNews/getNewsList/type/1/p/" + index);    }    public void setAdapter() {        if (adapter == null) {            adapter = new MyAdapter();            lv.setAdapter(adapter);        } else {            adapter.notifyDataSetChanged();        }    }    private void intRefreshScrollView() {        //1.设置模式        pull_rs.setMode(PullToRefreshBase.Mode.BOTH);        //2.通过调用getLoadingLayoutProxy方法，设置下拉刷新状况布局中显示的文字 ，第一个参数为true,代表下拉刷新        ILoadingLayout headLables = pull_rs.getLoadingLayoutProxy(true, false);        headLables.setPullLabel("下拉刷新");        headLables.setRefreshingLabel("正在刷新");        headLables.setReleaseLabel("松开刷新");        //2.设置上拉加载底部视图中显示的文字，第一个参数为false,代表上拉加载更多        ILoadingLayout footerLables = pull_rs.getLoadingLayoutProxy(false, true);        footerLables.setPullLabel("上拉加载");        footerLables.setRefreshingLabel("正在载入...");        footerLables.setReleaseLabel("松开加载更多");        //3.设置监听事件        pull_rs.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ScrollView>() {            @Override            public void onPullDownToRefresh(PullToRefreshBase<ScrollView> refreshView) {                addToTop();//请求网络数据，并更新listview组件                refreshComplete();//数据加载完成后，关闭header,footer            }            @Override            public void onPullUpToRefresh(PullToRefreshBase<ScrollView> refreshView) {                addToBottom();//请求网络数据，并更新listview组件                refreshComplete();//数据加载完成后，关闭header,footer            }        });    }    /**     * 刷新完成时关闭     */    public void refreshComplete() {        new Handler().postDelayed(new Runnable() {            @Override            public void run() {                pull_rs.onRefreshComplete();            }        }, 1000);    }    class Mytask extends AsyncTask<String, Void, String> {        @Override        protected String doInBackground(String... strings) {            try {                //获取url                URL url = new URL(strings[0]);                //请求网络                HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();                int code = urlConnection.getResponseCode();                //判断是否返回成功                if (code == 200) {                    //获取网络信息                    InputStream inputStream = urlConnection.getInputStream();                    BufferedReader bf = new BufferedReader(new InputStreamReader(inputStream));                    builder = new StringBuilder();                    String s = "";                    //拼接                    while ((s = bf.readLine()) != null) {                        builder.append(s);                    }                }            } catch (Exception e) {                e.printStackTrace();            }            return builder.toString();        }        @Override        protected void onPostExecute(String s) {            super.onPostExecute(s);            Gson gson = new Gson();            Bean json = gson.fromJson(s, Bean.class);            if (type == 1) {                list.clear();                list.addAll(json.getData());            } else {                list.addAll(json.getData());            }            Log.d("zzz", list.toString());            //设置banner样式            // banner.setBannerStyle(BannerConfig.CIRCLE_INDICATOR_TITLE_INSIDE);            //设置图片加载器            list2 = new ArrayList<>();            for (int i = 0; i < list.size(); i++) {                list2.add(list.get(i).getPic_url());            }            banner.setImageLoader(new MyImagloder());            //设置图片集合            banner.setImages(list2);            //设置banner动画效果            //banner.setBannerAnimation(Transformer.RotateDown);            //设置标题集合（当banner样式有显示title时）            //banner.setBannerTitles(imageTitle);            //设置轮播时间            banner.setDelayTime(1500);            //设置指示器位置（当banner模式中有指示器时）            //banner.setIndicatorGravity(BannerConfig.CENTER);            //banner设置方法全部调用完毕时最后调用            banner.start();            setAdapter();        }    }    class MyAdapter extends BaseAdapter {        @Override        public int getCount() {            return list.size();        }        @Override        public Object getItem(int position) {            return null;        }        @Override        public long getItemId(int position) {            return 0;        }        @Override        public View getView(int position, View convertView, ViewGroup parent) {            Viewholder vh;            if (convertView == null) {                vh = new Viewholder();                convertView = View.inflate(MainActivity.this, R.layout.item, null);                vh.img = (ImageView) convertView.findViewById(R.id.imageView);                vh.tv = (TextView) convertView.findViewById(R.id.textView);                convertView.setTag(vh);            } else {                vh = (Viewholder) convertView.getTag();            }            vh.tv.setText(list.get(position).getNews_title());            ImageLoader.getInstance().displayImage(list.get(position).getPic_url(), vh.img);            return convertView;        }    }    public static class Viewholder {        ImageView img;        TextView tv;    }}
MyImagloder:
package com.example.pulltorefreshview;import android.content.Context;import android.widget.ImageView;import com.youth.banner.loader.ImageLoader;/** * Created by Earl on 2017/10/25. */public class MyImagloder extends ImageLoader {    @Override    public void displayImage(Context context, Object path, ImageView imageView) {        //得到ImageLoader的实例        com.nostra13.universalimageloader.core.ImageLoader instance = com.nostra13.universalimageloader.core.ImageLoader.getInstance();        //通过ImageLoader设置图片        instance.displayImage((String) path, imageView);    }}
Mapp:
package com.example.pulltorefreshview;import android.app.Application;import android.graphics.Bitmap;import com.nostra13.universalimageloader.cache.disc.naming.Md5FileNameGenerator;import com.nostra13.universalimageloader.core.DisplayImageOptions;import com.nostra13.universalimageloader.core.ImageLoader;import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;import java.io.File;/** * Created by Earl on 2017/10/25. */public class Mapp extends Application {    public void onCreate() {        super.onCreate();        File cacheFile=getExternalCacheDir();        ImageLoaderConfiguration config=new ImageLoaderConfiguration.Builder(this)                .memoryCacheExtraOptions(480, 800)//缓存图片最大的长和宽                .threadPoolSize(2)//线程池的数量                .threadPriority(4)                .memoryCacheSize(2*1024*1024)//设置内存缓存区大小                .diskCacheSize(20*1024*1024)//设置sd卡缓存区大小                .writeDebugLogs()//打印日志内容                .diskCacheFileNameGenerator(new Md5FileNameGenerator())//给缓存的文件名进行md5加密处理                .build();        ImageLoader.getInstance().init(config);    }    public static DisplayImageOptions getImageOptions(){        DisplayImageOptions optionsoptions=new DisplayImageOptions.Builder()                .cacheInMemory(true)//使用内存缓存                .cacheOnDisk(true)//使用磁盘缓存                .bitmapConfig(Bitmap.Config.RGB_565)//设置图片格式                .build();        return optionsoptions;    }}
Bean:
package com.example.pulltorefreshview;import java.util.List;/** * Created by Earl on 2017/10/25. */public class Bean {    private int status;    private String info;    private List<DataBean> data;    public int getStatus() {        return status;    }    public void setStatus(int status) {        this.status = status;    }    public String getInfo() {        return info;    }    public void setInfo(String info) {        this.info = info;    }    public List<DataBean> getData() {        return data;    }    public void setData(List<DataBean> data) {        this.data = data;    }    public static class DataBean {        private String news_id;        private String news_title;        private String news_summary;        private String pic_url;        public String getNews_id() {            return news_id;        }        public void setNews_id(String news_id) {            this.news_id = news_id;        }        public String getNews_title() {            return news_title;        }        public void setNews_title(String news_title) {            this.news_title = news_title;        }        public String getNews_summary() {            return news_summary;        }        public void setNews_summary(String news_summary) {            this.news_summary = news_summary;        }        public String getPic_url() {            return pic_url;        }        public void setPic_url(String pic_url) {            this.pic_url = pic_url;        }    }}
MyListview:
package com.example.pulltorefreshview;import android.content.Context;import android.util.AttributeSet;import android.widget.ListView;/** * Created by Earl on 2017/10/24. */public class MyListview extends ListView{    public MyListview(Context context) {        super(context);    }    public MyListview(Context context, AttributeSet attrs) {        super(context, attrs);    }    public MyListview(Context context, AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);    }    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,                MeasureSpec.AT_MOST);        super.onMeasure(widthMeasureSpec, expandSpec);    }}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="com.example.pulltorefreshview.MainActivity">    <com.handmark.pulltorefresh.library.PullToRefreshScrollView        android:id="@+id/pull_rs"        android:layout_width="match_parent"        android:layout_height="match_parent">        <LinearLayout            android:layout_width="match_parent"            android:layout_height="match_parent"            android:orientation="vertical">            <com.youth.banner.Banner                android:id="@+id/banner"                android:layout_width="match_parent"                android:layout_height="200dp"></com.youth.banner.Banner>            <com.example.pulltorefreshview.MyListview                android:id="@+id/lv"                android:layout_width="match_parent"                android:layout_height="match_parent"></com.example.pulltorefreshview.MyListview>        </LinearLayout>    </com.handmark.pulltorefresh.library.PullToRefreshScrollView></RelativeLayout>
item.xml
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="horizontal" android:layout_width="match_parent"    android:layout_height="match_parent">    <ImageView        android:layout_width="90dp"        android:layout_height="90dp"        android:id="@+id/imageView"        />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:id="@+id/textView"        android:textSize="20sp"/></LinearLayout>
compile 'com.youth.banner:banner:1.4.9'