Xlistview+多條目
#1Mantivity:
package com.bw.ymy.week2;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import me.maxwin.view.XListView;
public class one extends Fragment {
private XListView xlistview;
private MyAdapter adapter;
private int page;
private final int LOAD_COUNT=5;
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view=inflater.inflate(R.layout.one,container,false);
page=1;
//獲取資源id
xlistview=view.findViewById(R.id.xlistview);
//介面卡
adapter=new MyAdapter(getActivity());
xlistview.setAdapter(adapter);
//載入
xlistview.setPullLoadEnable(true);
//重新整理
xlistview.setPullRefreshEnable(true);
return view;
}
@Override public void onActivityCreated(@Nullable Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); //載入 xlistview.setPullLoadEnable(true); //重新整理 xlistview.setPullRefreshEnable(true); // xlistview.setXListViewListener(new XListView.IXListViewListener() { @Override public void onRefresh() { page=1; inflodata(); } @Override public void onLoadMore() { page++; inflodata(); } }); } private String bbb="http://api.expoon.com/AppNews/getNewsList/type/1/p/%d"; private void inflodata() { Netuil.getInstance().getRequest(String.format(bbb,page),Bean.class,new Netuil.Callback<Bean>() { @Override public void onsuccess(Bean bean) { //顯示 if(page==1) { adapter.setdata(bean.getData()); } //載入 else { adapter.add(bean.getData()); } xlistview.stopLoadMore(); xlistview.stopRefresh(); //判斷 if(bean.getData().size()<LOAD_COUNT) { xlistview.setPullLoadEnable(false); } } }); } }
#2Adapter:
package com.bw.ymy.week2;
import android.content.Context;
import android.graphics.Bitmap;
import android.view.LayoutInflater;
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.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.assist.ImageScaleType;
import com.nostra13.universalimageloader.core.display.CircleBitmapDisplayer;
import java.util.ArrayList;
import java.util.List;
public class MyAdapter extends BaseAdapter {
private List<Bean.DataBean> mdata;
private Context context;
private static final int ITEM_COUNT = 2;
private static final int TT_ITEM = 0;
private static final int GN_ITEM = 1;
public MyAdapter(Context context) {
mdata = new ArrayList<>();
this.context = context;
}
//更新
public void setdata(List<Bean.DataBean> datas) {
//清空
mdata.clear();
mdata.addAll(datas);
notifyDataSetChanged();
}
//追加
public void add(List<Bean.DataBean> datas) {
mdata.addAll(datas);
notifyDataSetChanged();
}
//數量
@Override
public int getCount() {
return mdata.size();
}
@Override
public Bean.DataBean getItem(int position) {
return mdata.get(position);
}
@Override
public int getViewTypeCount() {
return 2;
}
@Override
public int getItemViewType(int position) {
return position%2;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if(getItemViewType(position)==0)
{
if(convertView==null)
{
convertView=LayoutInflater.from(context).inflate(R.layout.item,parent,false);
holder=new ViewHolder();
holder.title1 = convertView.findViewById(R.id.title1);
holder.title2 = convertView.findViewById(R.id.title2);
holder.image1 = convertView.findViewById(R.id.image1);
convertView.setTag(holder);
}else
{
holder = (ViewHolder) convertView.getTag();
}
holder.title1.setText(getItem(position).getNews_title());
holder.title2.setText(getItem(position).getNews_summary());
DisplayImageOptions options=new DisplayImageOptions.Builder()
.bitmapConfig(Bitmap.Config.RGB_565)
.cacheInMemory(true)
.cacheOnDisk(true)
.build();
ImageLoader.getInstance().displayImage(getItem(position).getPic_url(),holder.image1,options);
}
else
{
if(convertView==null)
{
convertView=LayoutInflater.from(context).inflate(R.layout.item2,parent,false);
holder=new ViewHolder();
holder.title1 = convertView.findViewById(R.id.title1);
holder.title2 = convertView.findViewById(R.id.title2);
convertView.setTag(holder);
}else
{
holder= (ViewHolder) convertView.getTag();
}
holder.title1.setText(getItem(position).getNews_title());
holder.title2.setText(getItem(position).getNews_summary());
}
/* if (convertView == null) {
convertView = LayoutInflater.from(context).inflate(R.layout.item, parent, false);
holder = new ViewHolder();
holder.title1 = convertView.findViewById(R.id.title1);
holder.title2 = convertView.findViewById(R.id.title2);
holder.image1 = convertView.findViewById(R.id.image1);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.title1.setText(mdata.get(position).getNews_title());
holder.title2.setText(mdata.get(position).getNews_summary());
DisplayImageOptions options=new DisplayImageOptions.Builder()
.bitmapConfig(Bitmap.Config.RGB_565)
.cacheInMemory(true)
.cacheOnDisk(true)
.build();
ImageLoader.getInstance().displayImage(getItem(position).getPic_url(),holder.image1,options);
*/
return convertView;
}
}
class ViewHolder{
TextView title1,title2;
ImageView image1;
}
#3.工具類
package com.bw.ymy.week2;
import android.os.AsyncTask;
import com.google.gson.Gson;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
public class Netuil {
//1.單列
private static Netuil instance;
//2.方法
public Netuil() {
}
//3.獲取物件
public static Netuil getInstance()
{
if(instance==null)
{
instance=new Netuil();
}
return instance;
}
//4.get請求
public interface Callback<T>
{
void onsuccess(T t);
}
//5.網路
public void getRequest(final String urlstr,final Class clazz,final Callback callback)
{
new AsyncTask<String,Void,Object>()
{
@Override
protected Object doInBackground(String... strings) {
return getRequest(urlstr,clazz);
}
@Override
protected void onPostExecute(Object o) {
callback.onsuccess(o);
}
}.execute(urlstr);
}
//6.返回BEAN
public <T> T getRequest(String urlstr,Class clazz)
{
return (T) new Gson().fromJson(getRequest(urlstr),clazz);
}
//7.網路請求
public String getRequest(String urlstr)
{
String result="";
try {
URL url=new URL(urlstr);
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
//get
urlConnection.setRequestMethod("GET");
urlConnection.setReadTimeout(5000);
urlConnection.setConnectTimeout(5000);
int responseCode = urlConnection.getResponseCode();
if(responseCode==200)
{
result=stream2(urlConnection.getInputStream());
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return result;
}
//8.字元流
public String stream2(InputStream is) throws IOException
{
InputStreamReader InputStreamReader=new InputStreamReader(is);
BufferedReader BufferedReader=new BufferedReader(InputStreamReader);
StringBuilder StringBuilder=new StringBuilder();
for (String tmp=BufferedReader.readLine();tmp!=null;tmp=BufferedReader.readLine())
{
StringBuilder.append(tmp);
}
return StringBuilder.toString();
}
}
#4.APP+imageloader
package com.bw.ymy.week2;
import android.app.Application;
import android.os.Environment;
import com.nostra13.universalimageloader.cache.disc.impl.UnlimitedDiskCache;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
import java.io.File;
public class App extends Application {
@Override
public void onCreate() {
//路徑
String pate=Environment.getExternalStorageState()+"/image";
File file=new File(pate);
ImageLoaderConfiguration configuration=new ImageLoaderConfiguration.Builder(this)
.memoryCacheSizePercentage(10)//內部承包
.diskCache(new UnlimitedDiskCache(file))//路徑
.diskCacheFileCount(50)//數量
.diskCacheSize(50*1024*1024)
.build();
ImageLoader.getInstance().init(configuration);
super.onCreate();
}
}