简易新闻客户端

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需要网络权限<uses-permission android:name="android.permission.INTERNET" />

package com.example.net;import android.app.Activity;import android.os.Handler;import android.os.Message;import android.support.v7.app.ActionBarActivity;import android.os.Bundle;import android.util.Xml;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.ListView;import android.widget.TextView;import com.loopj.android.image.SmartImageView;import org.xmlpull.v1.XmlPullParser;import org.xmlpull.v1.XmlPullParserException;import java.io.IOException;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;import java.util.ArrayList;import java.util.List;public class NewsClient extends Activity {    Handler handler=new Handler(){        @Override        public void handleMessage(Message msg) {            ListView list= (ListView) findViewById(R.id.list);            list.setAdapter(new MyAdapter());        }    };    private List<News> newsList;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_news_client);        parseXml();    }    private void parseXml(){        new Thread(){            @Override            public void run() {                String path="http://192.168.0.101/news/news.xml";                /*                  <?xml version="1.0" encoding="utf-8"?>                 <news>                     <new>                         <title>标题标题</title>                         <detail>详细内容</detail>                         <image>http://192.168.0.101/news/images/image1.jpg</image>                         <comment>10001</comment>                     </new>                      <new>                         <title>标题标题</title>                         <detail>详细内容。</detail>                         <image>http://192.168.0.101/news/images/image1.jpg</image>                         <comment>10001</comment>                     </new>                  </news>                 */                try {                    URL url=new URL(path);                    HttpURLConnection conn= (HttpURLConnection) url.openConnection();                    conn.setRequestMethod("GET");                    conn.setReadTimeout(5000);                    conn.setConnectTimeout(5000);                    if(conn.getResponseCode()==200){                        InputStream is=conn.getInputStream();                        XmlPullParser xml = Xml.newPullParser();                        xml.setInput(is,"utf-8");                        int type=xml.getEventType();                        News news=null;                        while(type!=XmlPullParser.END_DOCUMENT){                            switch (type){                                case XmlPullParser.START_TAG:                                    if("news".equals(xml.getName())){                                        newsList=new ArrayList<News>();                                    }else if("new".equals(xml.getName())){                                        news=new News();                                    }else if("title".equals(xml.getName())){                                        news.setTitle(xml.nextText());                                    }else if("detail".equals(xml.getName())){                                        news.setDetail(xml.nextText());                                    }                                    else if("image".equals(xml.getName())){                                        news.setImageurl(xml.nextText());                                    }                                    else if("comment".equals(xml.getName())){                                        news.setComment(xml.nextText());                                    }                                    break;                                case XmlPullParser.END_TAG:                                    if("new".equals(xml.getName())){                                        newsList.add(news);                                    }                                    break;                            }                            type=xml.next();                        }                    }                } catch (MalformedURLException e) {                    e.printStackTrace();                } catch (IOException e) {                    e.printStackTrace();                } catch (XmlPullParserException e) {                    e.printStackTrace();                }                handler.sendEmptyMessage(0);            }        }.start();    }    class MyAdapter extends BaseAdapter{        @Override        public int getCount() {            return newsList.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) {            View v=null;            if(convertView==null){                v=View.inflate(NewsClient.this,R.layout.list,null);            }else{                v=convertView;            }            //SmartImageView为使用了别人的类库github中搜索smart-image-view复制源文件到项目            SmartImageView imageView= (SmartImageView) v.findViewById(R.id.iv_photo);            TextView tv_title= (TextView) v.findViewById(R.id.tv_title);            TextView tv_detail= (TextView) v.findViewById(R.id.tv_detail);            TextView tv_comment= (TextView) v.findViewById(R.id.tv_comment);            News news=newsList.get(position);            //直接将图片下载添加上去            imageView.setImageUrl(news.getImageurl());            tv_title.setText(news.getTitle());            tv_detail.setText(news.getDetail());            tv_comment.setText(news.getComment()+"条评论");            return v;        }    }}

布局

<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.net.NewsClient">    <ListView        android:id="@+id/list"        android:layout_width="wrap_content"        android:layout_height="wrap_content"         /></RelativeLayout>

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="wrap_content"    android:layout_height="wrap_content">    <com.loopj.android.image.SmartImageView        android:layout_centerVertical="true"        android:id="@+id/iv_photo"        android:layout_width="100dp"        android:layout_height="100dp"        android:layout_alignParentLeft="true"        android:src="@drawable/image1" />    <TextView        android:layout_marginTop="10dp"        android:id="@+id/tv_title"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_toRightOf="@id/iv_photo"        android:singleLine="true"        android:textSize="16sp"        android:text="山东平邑县委书记县长被免职" />    <TextView        android:id="@+id/tv_detail"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_toRightOf="@id/iv_photo"        android:lines="2"        android:layout_below="@id/tv_title"        android:textSize="16sp"        android:textColor="#55000000"        android:text="连续发生生产安全事故，常务副县长和分管副县长也被免职" />    <TextView        android:id="@+id/tv_comment"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_below="@id/tv_detail"        android:layout_alignParentRight="true"        android:textColor="#88ff0000"        android:text="10001条评论" /></RelativeLayout>

news类

package com.example.net;/** * Created by joy on 2015/12/29. */public class News {    private String title;    private String detail;    private String imageurl;    private String comment;    public News(String title, String detail, String imageurl, String comment) {        this.title = title;        this.detail = detail;        this.imageurl = imageurl;        this.comment = comment;    }    public News() {    }    public String getTitle() {        return title;    }    public String getDetail() {        return detail;    }    public String getImageurl() {        return imageurl;    }    public String getComment() {        return comment;    }    public void setTitle(String title) {        this.title = title;    }    public void setDetail(String detail) {        this.detail = detail;    }    public void setImageurl(String imageurl) {        this.imageurl = imageurl;    }    public void setComment(String comment) {        this.comment = comment;    }}

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