package yxr.com.day_520;

import java.util.List;

//javaBean
public class Goods {

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 {
    /**
     * news_id : 13783
     * news_title : 廣州國際瓦業展新聞釋出會於羊城吹響號角
     * news_summary : 近日，2016第六屆中國(廣州)國際瓦業交易會暨制瓦工業展•亞太建築科技論壇新聞釋出會新聞釋出會在廣州軍區珠江賓館隆重召
     * pic_url : http://f.expoon.com/sub/news/2016/01/18/341493_230x162_0.jpg
     */

    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;
    }
}
 

}
package yxr.com.day_520;

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.utils.NetWordUtils;
import com.bwie.xlistviewlibrary.view.XListView;
import com.google.gson.Gson;
import com.nostra13.universalimageloader.core.ImageLoader;

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

/**

• 實現監聽(setXListViewListener)

• url拼接頁數;

• 給xlistview設定可以載入更多;

• ui隱藏(重新整理頭 和重新整理底部)
  */
  //Activity
  public class MainActivity extends AppCompatActivity {
  String baseUrl = “http://api.expoon.com/AppNews/getNewsList/type/1/p/”;
  int page;
  private XListView xListView;
  List<Goods.DataBean> 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);
   xListView.setPullLoadEnable(true);// 開啟上拉載入更多功能;
   imageLoaderInstances = ImageLoader.getInstance();
   mAdapter = new MAdapter();
   xListView.setAdapter(mAdapter);
   //定義一個請求網路資料
  
   initData( page);
  
   //實現監聽設定上下拉的邏輯
   xListView.setXListViewListener(new XListView.IXListViewListener() {
       //下拉重新整理
       @Override
       public void onRefresh() {
           page = 0;
           initData( page);
  

page
}

        //上拉載入更多;
        @Override
        public void onLoadMore() {
             page++;
            initData(count);
        }
    });


}
//請求網路方法
private void initData(int page) {
    String mUrl = baseUrl + page;
    new MAsycnTask().execute(mUrl);

}

//配置介面卡
private class MAdapter extends BaseAdapter {
    @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) {
        View viewItem = View.inflate(MainActivity.this, R.layout.lv_item, null);
        TextView textView = (TextView) viewItem.findViewById(R.id.textView);
        ImageView imageView = (ImageView) viewItem.findViewById(R.id.imageView);
        textView.setText(list.get(i).getNews_title());
        imageLoaderInstances.displayImage(list.get(i).getPic_url(), imageView);


        return viewItem;
    }
}


class  MAsycnTask 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);
        //解析gson
        Gson gson = new Gson();
        Goods goods = gson.fromJson(s, Goods.class);
        List<Goods.DataBean> data = goods.getData();

        list.addAll(data);
        mAdapter.notifyDataSetChanged();
        uiComplete();//讓重新整理頭和重新整理底部隱藏;


    }
}

private void uiComplete() {
    xListView.setRefreshTime("剛剛重新整理");
    xListView.stopRefresh();//隱藏重新整理頭部
    xListView.stopLoadMore();//隱藏重新整理腳部


}

}
package yxr.com.day_520;

import android.app.Application;

import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;

/**

• author:Created by WangZhiQiang on 2017-10-10.

• 系統啟動 會先執行這個MApp,所以我們在這裡進行初始化 框架 元件等等;
  */
  // App
  public class MApp extends Application{

  @Override
  public void onCreate() {
  super.onCreate();

   //初始化元件,圖片框架
   ImageLoaderConfiguration configuration = new ImageLoaderConfiguration.Builder(this).build();
   ImageLoader.getInstance().init(configuration);
  

  }
  }