一丶一个简单的访问服务器(访问网易新闻客户端)点击加载新闻：首页的布局文件

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical">

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:onClick="click"

android:text="点击显示网易新闻" />

android:id="@+id/lv"

android:layout_width="match_parent"

android:layout_height="match_parent"

>

listView中的布局文件：

android:layout_width="match_parent"

android:layout_height="match_parent" >

android:id="@+id/iv"

android:layout_width="80dp"

android:layout_height="80dp" />

android:id="@+id/tvTitle"

android:layout_toRightOf="@id/iv"

android:layout_marginLeft="5dp"

android:textSize="16dp"

android:textColor="#000000"

android:textStyle="bold"

android:text="我是标题"

android:layout_width="wrap_content"

android:layout_height="wrap_content" />

android:id="@+id/tvDiscription"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_below="@id/tvTitle"

android:layout_alignLeft="@id/tvTitle"

android:textSize="12dp"

android:maxLines="3"

android:textColor="#99000000"

android:text="我是内容"

/>

android:id="@+id/tvInfo"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="我是跟帖"

android:textSize="10dp"

android:layout_marginRight="5dp"

android:layout_alignParentRight="true"

android:layout_alignBottom="@id/iv"

/>

2.MainActivity中代码

public void click(View view){

new Thread(){

public void run() {

//1.创建网络地址对象

String path = "http://192.168.1.184:8080/news/news.xml" ;//服务端地址

try {

URL url = new URL(path) ;

//打开连接

HttpURLConnection http = (HttpURLConnection) url.openConnection() ;

http.setConnectTimeout(5000) ;

//拿到服务器返回的状态吗

int code = http.getResponseCode() ;

//判断状态吗

if(code == 200){

//流中是xml文件

InputStream is = http.getInputStream()  ;

list = StreamUtils.getNewsList(is) ;//解析XML放回的list集合

runOnUiThread(new Runnable() {

//将流中的xml文件解析成集合

@Override

public void run() {

lv.setAdapter(new MyAdapter()) ;

}

}) ;

}else{

runOnUiThread(new Runnable() {

@Override

public void run() {

Toast.makeText(MainActivity.this, "请求失败", 0).show() ;

}

}) ;

}

} catch (Exception e) {

e.printStackTrace();

runOnUiThread(new Runnable() {

@Override

public void run() {

Toast.makeText(MainActivity.this, "网络不通,请检查网络是否开启", 0).show() ;

}

}) ;

}

};

}.start() ;

}

class MyAdapter extends BaseAdapter{

@Override

public int getCount() {

return list.size();

}

@Override

public Object getItem(int position) {

// TODO Auto-generated method stub

return null;

}

@Override

public long getItemId(int position) {

// TODO Auto-generated method stub

return 0;

}

@Override

public View getView(int position, View convertView, ViewGroup parent) {

//拿到布局填充器

LayoutInflater inflater = LayoutInflater.from(MainActivity.this) ;

//加载布局文件

View view = null ;

if(convertView == null){

view = inflater.inflate(R.layout.news, null) ;

}else{

view = convertView ;

}

//拿到布局文件中的各个控件

TextView tvTitle = (TextView) view.findViewById(R.id.tvTitle) ;

TextView tvDesctiption = (TextView) view.findViewById(R.id.tvDiscription) ;

TextView tvInfo = (TextView) view.findViewById(R.id.tvInfo) ;

SmartImageView iv = (SmartImageView) view.findViewById(R.id.iv) ;

//拿到新闻对象

NewsItem news = list.get(position) ;

tvTitle.setText(news.getTitle()) ;

//设置图片

iv.setImageUrl(news.getImage()) ;

tvDesctiption.setText(StreamUtils.change(news.getDescription())) ;

if(news.getType().equals("1")){

tvInfo.setText("跟帖:" + news.getConnent()) ;

}else if(news.getType().equals("2")){

tvInfo.setText("专题") ;

tvInfo.setTextColor(getResources().getColor(android.R.color.holo_blue_bright)) ;

}else if(news.getType().equals("3")){

tvInfo.setText("视频") ;

tvInfo.setTextColor(getResources().getColor(android.R.color.holo_red_light)) ;

}

return view;

}

}

}

3.解析新闻XML的工具类

public static List getNewsList(InputStream is) {

List list = new ArrayList();

try {

// 创建xml的解析器

XmlPullParser pull = Xml.newPullParser();

// 设置要解析的数据的编码

pull.setInput(is, "utf-8");

// 拿到事件类型

int type = pull.getEventType();

// 循环解析数据

NewsItem item = null;

while (type != XmlPullParser.END_DOCUMENT) {

switch (type) {

case XmlPullParser.START_TAG:

if("item".equals(pull.getName())){

item = new NewsItem() ;

}else if("title".equals(pull.getName())){

item.setTitle(pull.nextText()) ;

}else if("description".equals(pull.getName())){

item.setDescription(pull.nextText()) ;

}else if("p_w_picpath".equals(pull.getName())){

item.setImage(pull.nextText()) ;

}else if("type".equals(pull.getName())){

item.setType(pull.nextText()) ;

}else if("comment".equals(pull.getName())){

item.setConnent(pull.nextText()) ;

}

break;

case XmlPullParser.END_TAG:

if("item".equals(pull.getName())){

list.add(item) ;

item = null ;

}

break;

}

//拿到下一个事件

type = pull.next() ;

}

} catch (Exception e) {

e.printStackTrace();

}

return list ;

}

4.肯定有一个新闻对象News(要创建一个bean包中有News类封装新闻消息)

5.别忘了记得添加访问internet权限

6.服务端创建的News(附件里面有)

注：要加载图片我们要用到smartp_w_picpathview加载图片(smrtImageview包附件里面)