1 public class MainActivity extends Activity {
2
3 private ListView listView;
4 private ArrayList<Person> persons;
5 private ListAdapter adapter;
6 private Handler handler=null;
7 //xml文件的网络地址
8 final String path="http://192.168.5.10:8080/FileServer/person.xml";
9 @SuppressLint("HandlerLeak")
10 protected void onCreate(Bundle savedInstanceState) {
11 super.onCreate(savedInstanceState);
12 setContentView(R.layout.main);
13
14 listView=(ListView) super.findViewById(R.id.listview);
15 //cache=new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/cache");
16
17 //开一条子线程加载网络数据
18 Runnable runnable=new Runnable()
19 {
20 public void run()
21 {
22 try
23 {
24 Thread.sleep(2000);
25 //xmlwebData解析网络中xml中的数据
26 persons=XmlwebData.getData(path);
27 //发送消息，并把persons结合对象传递过去
28 handler.sendMessage(handler.obtainMessage(0, persons));
29 }
30 catch (InterruptedException e)
31 {
32 e.printStackTrace();
33 }
34 }
35 };
36
37 try
38 {
39 //开启线程
40 new Thread(runnable).start();
41 //handler与线程之间的通信及数据处理
42 handler=new Handler()
43 {
44 public void handleMessage(Message msg)
45 {
46 if(msg.what==0)
47 {
48 //msg.obj是获取handler发送信息传来的数据
49 @SuppressWarnings("unchecked")
50 ArrayList<Person> person=(ArrayList<Person>) msg.obj;
51 //给ListView绑定数据
52 BinderListData(person);
53 }
54 }
55 };
56 }
57 catch (Exception e)
58 {
59 e.printStackTrace();
60 }
61 }
62
63 //绑定数据
64 public void BinderListData(ArrayList<Person> person)
65 {
66 //创建adapter对象
67 adapter=new ListViewAdapter(R.layout.item,this,person);
68 //将Adapter绑定到listview中
69 listView.setAdapter(adapter);
70 }
71
72 }2.从网络中获取xml文件并解析数据
1 public class XmlwebData
2 {
4 private static ArrayList<Person> persons=null; 6 public static ArrayList<Person> getData(final String path)
7 {
8 try
9 {
10 URL url=new URL(path);
11 Person person=null;
13 HttpURLConnection conn=(HttpURLConnection) url.openConnection();
14 conn.setRequestMethod("GET");
15 conn.setConnectTimeout(5000);
16 if(conn.getResponseCode()==200)
17 {
18 InputStream inputstream=conn.getInputStream();
21 XmlPullParser xml=Xml.newPullParser();
22 xml.setInput(inputstream, "UTF-8");
23 int event=xml.getEventType();
24
25 while(event!=XmlPullParser.END_DOCUMENT)
26 {
27 switch (event)
28 {
29 //开始解析文档
30 case XmlPullParser.START_DOCUMENT:
31 persons=new ArrayList<Person>();
32 break;
33 case XmlPullParser.START_TAG:
34
35 String value=xml.getName();
36 if(value.equals("person"))
37 {//person对象的初始化必须在这里初始化不然可能出现为null的现象
38 person=new Person();
39 //获取属性值
40 person.setId(new Integer(xml.getAttributeValue(0)));
41 }
42 else if(value.equals("name"))
43 {
44 person.setName(xml.nextText());
45 }
46 else if(value.equals("sex"))
47 {
48 person.setSex(xml.nextText());
49 }
50 else if(value.equals("age"))
51 {
52 person.setAge(new Integer(xml.nextText()));
53 }
54 else if(value.equals("path"))
55 {
56 person.setPath(xml.nextText());
57 }
58 break;
59 case XmlPullParser.END_TAG:
60 if(xml.getName().equals("person"))
61 {
62 persons.add(person);
63 System.out.println(person.getName());;
64 person=null;
65 }
66 break;
67 }
68 //解析下一个对象
69 event=xml.next();
70 }
71 return persons;
72 }
73 }
74 catch (Exception e)
75 {
76 e.printStackTrace();
77 }
78
79
80 return null;
81
82 }
83
84 }
3.Person对象类
1 public class Person
2 {
3 private int id;
4 private String name;
5 private String sex;
6 private String path;
7 public String getPath() {
8 return path;
9 }
10 public void setPath(String path) {
11 this.path = path;
12 }
13 private int age;
14 public int getId() {
15 return id;
16 }
17 public void setId(int id) {
18 this.id = id;
19 }
20 public String getName() {
21 return name;
22 }
23 public void setName(String name) {
24 this.name = name;
25 }
26 public String getSex() {
27 return sex;
28 }
29 public void setSex(String sex) {
30 this.sex = sex;
31 }
32 public int getAge() {
33 return age;
34 }
35 public void setAge(int age) {
36 this.age = age;
37 }
38 public Person(){
39
40 }
41 }
4.Adapter数据适配器类
1 public class ListViewAdapter extends BaseAdapter implements ListAdapter
2 {
3
4 private ArrayList<Person> data;
5 private int id;
6 private Context context;
7 private LayoutInflater inflater;
8 public ListViewAdapter(int item, MainActivity mainActivity,ArrayList<Person> data)
9 {
10 this.data=data;
11 this.context=mainActivity;
12 this.id=item;
13 inflater=LayoutInflater.from(context);
14 }
15
16 @Override
17 public int getCount()
18 {
19 return data.size();
20 }
21
22 @Override
23 public Object getItem(int position)
24 {
25 return data.get(position);
26 }
27
28 @Override
29 public long getItemId(int position)
30 {
31 return position;
32 }
33
34 @Override
35 public View getView(int position, View view, ViewGroup arg2)
36 {
37 TextView name=null;
38 TextView sex=null;
39 TextView age=null;
40 ImageView img=null;
41 if(view==null)
42 {
43 view=inflater.inflate(id, null);
44 name=(TextView) view.findViewById(R.id.PersonName);
45 sex=(TextView) view.findViewById(R.id.PersonSex);
46 age=(TextView) view.findViewById(R.id.PersonAge);
47 img=(ImageView) view.findViewById(R.id.Personimage);
48 //保存view对象到ObjectClass类中
49 view.setTag(new ObjectClass(name,sex,age,img));
50 }
51 else
52 {
53 //得到保存的对象
54 ObjectClass objectclass=(ObjectClass) view.getTag();
55 name=objectclass.name;
56 sex=objectclass.sex;
57 age=objectclass.age;
58 img=objectclass.img;
59 }
60
61 Person person=(Person) data.get(position);
62 //帮数据绑定到控件上
63 name.setText(person.getName().toString());
64 sex.setText("性别："+person.getSex().toString());
65 age.setText("年龄："+String.valueOf(person.getAge()));
66 //加载图片资源
67 LoadImage(img,person.getPath());
68 return view;
69
70 }
71
72 private void LoadImage(ImageView img, String path)
73 {
74 //异步加载图片资源
75 AsyncTaskImageLoad async=new AsyncTaskImageLoad(img);
76 //执行异步加载，并把图片的路径传送过去
77 async.execute(path);
78
79 }
80
81 private final class ObjectClass
82 {
83 TextView name=null;
84 TextView sex=null;
85 TextView age=null;
86 ImageView img=null;
87 public ObjectClass(TextView name, TextView sex, TextView age,ImageView img)
88 {
89 this.name=name;
90 this.sex=sex;
91 this.age=age;
92 this.img=img;
93 }
94 }
95
97 }
5.异步加载图片类
1 public class AsyncTaskImageLoad extends AsyncTask<String, Integer, Bitmap> {
2
3 private ImageView Image=null;
4
5 public AsyncTaskImageLoad(ImageView img)
6 {
7 Image=img;
8 }
9 //运行在子线程中
10 protected Bitmap doInBackground(String... params) {
11 try
12 {
13 URL url=new URL(params[0]);
14 HttpURLConnection conn=(HttpURLConnection) url.openConnection();
15 conn.setRequestMethod("POST");
16 conn.setConnectTimeout(5000);
17 if(conn.getResponseCode()==200)
18 {
19 InputStream input=conn.getInputStream();
20 Bitmap map=BitmapFactory.decodeStream(input);
21 return map;
22 }
23 } catch (Exception e)
24 {
25 e.printStackTrace();
26 }
27 return null;
28 }
29
30 protected void onPostExecute(Bitmap result)
31 {
32 if(Image!=null && result!=null)
33 {
34 Image.setImageBitmap(result);
35 }
36
37 super.onPostExecute(result);
38 }
39 }6.网络中的person.xml文件内容为
1 <?xml version="1.0" encoding="UTF-8"?>
2 <Persons>
3 <person id="1">
4 <name>张三</name>
5 <sex>男</sex>
6 <age>25</age>
7 <path>http://192.168.5.10:8080/FileServer/chengjisihan.jpg</path>
8 </person>
9 <person id="2">
10 <name>李斯</name>
11 <sex>男</sex>
12 <age>78</age>
13 <path>http://192.168.5.10:8080/FileServer/laozi.jpg</path>
14 </person>
15 <person id="3">
16 <name>王五</name>
17 <sex>男</sex>
18 <age>22</age>
19 <path>http://192.168.5.10:8080/FileServer/lilongji.jpg</path>
20 </person>
21 <person id="4">
22 <name>庞聪</name>
23 <sex>男</sex>
24 <age>31</age>
25 <path>http://192.168.5.10:8080/FileServer/lishimin.jpg</path>
26 </person>
27 <person id="5">
28 <name>孙膑</name>
29 <sex>男</sex>
30 <age>48</age>
31 <path>http://192.168.5.10:8080/FileServer/lisi.jpg</path>
32 </person>
33 <person id="6">
34 <name>孙武</name>
35 <sex>男</sex>
36 <age>58</age>
37 <path>http://192.168.5.10:8080/FileServer/liyuan.jpg</path>
38 </person>
39
40 <person id="7">
41 <name>成吉思汗</name>
42 <sex>男</sex>
43 <age>40</age>
44 <path>http://192.168.5.10:8080/FileServer/sunbiin.jpg</path>
45 </person>
46
47 <person id="8">
48 <name>李渊</name>
49 <sex>男</sex>
50 <age>36</age>
51 <path>http://192.168.5.10:8080/FileServer/sunwu.jpg</path>
52 </person>
53
54 <person id="9">
55 <name>李隆基</name>
56 <sex>男</sex>
57 <age>32</age>
58 <path>http://192.168.5.10:8080/FileServer/wangwu.jpg</path>
59 </person>
60 <person id="10">
61 <name>武则天</name>
62 <sex>女</sex>
63 <age>55</age>
64 <path>http://192.168.5.10:8080/FileServer/wuzetian.jpg</path>
65 </person>
66 </Persons>
运行结果如下