Android中ListView异步加载数据
1.主Activity
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.openConnect
补充：移动开发 , Android ,
