标签：class java tar ext get strong
可能遇到的错误 :路径错误
java.lang.IllegalArgumentException: is == null
没有设置setInput()
org.xmlpull.v1.XmlPullParserException: setInput() must be called first.
(position:START_DOCUMENT null@1:1)
之所以程序写成下面这样，是因为4.0以后，不允许在主线程进行其他处理。否则会出现输入流异常
MainActivity.java
public class MainActivity extends Activity {
MyHandler myHandler;
private ListView
listView;
@Override
protected void onCreate(Bundle
savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView
= (ListView) findViewById(R.id.listView);
myHandler = new
MyHandler();
MyThread mythread = new MyThread();
new
Thread(mythread).start();
}
class MyHandler extends Handler{
@Override
public void
handleMessage(Message msg) {
super.handleMessage(msg);
Bundle b =
msg.getData();
List list =
b.getParcelableArrayList("list");
List<Map<String,String>>
listItem = (List<Map<String, String>>)
list.get(0);
SimpleAdapter adapter = new SimpleAdapter(MainActivity.this,
listItem, R.layout.item, new String[]{"name","age"}, new
int[]{R.id.name,R.id.age});
listView.setAdapter(adapter);
}
}
class MyThread implements Runnable{
List<Person>
list;
List<Map<String,String>> listItem = new
ArrayList<Map<String,String>>();
Map<String,String>
item =null;
ArrayList array = new
ArrayList();
@Override
public void run() {
PersonService
service = new PersonService();
try {
list =
service.getFile();
if(list!=null){
for(Person p
:list){
item = new
HashMap<String,String>();
item.put("id",
p.getId());
item.put("name", p.getName());
item.put("age",
p.getAge());
listItem.add(item);
}
}else{
Toast.makeText(MainActivity.this,
"没有解析出",
Toast.LENGTH_SHORT).show();
return;
}
array.add(listItem);
Message
msg = new Message();
Bundle b = new
Bundle();
b.putParcelableArrayList("list",
array);
msg.setData(b);
MainActivity.this.myHandler.sendMessage(msg);
}
catch (IOException e) {
Toast.makeText(MainActivity.this, "文件错误",
Toast.LENGTH_SHORT).show();
} catch (XmlPullParserException e)
{
Toast.makeText(MainActivity.this, "解析错误",
Toast.LENGTH_SHORT).show();
}
}
}
}
PersonService.java
public class PersonService {
public List<Person> getFile() throws IOException,
XmlPullParserException{
InputStream input =
this.getClass().getClassLoader().getResourceAsStream("person.xml");
return
parseXML(input);
}
public static List<Person>
parseXML(InputStream input) throws XmlPullParserException,
IOException{
List<Person> list = null;
Person person =
null;
XmlPullParser parser =
XmlPullParserFactory.newInstance().newPullParser();
int eventType =
parser.getEventType();
parser.setInput(input, "UTF-8");
while(eventType != XmlPullParser.END_DOCUMENT){
switch (eventType)
{
case XmlPullParser.START_DOCUMENT:
list = new
ArrayList<Person>();
break;
case
XmlPullParser.START_TAG:
if(parser.getName().equals("person")){
person
= new Person();
String id =
parser.getAttributeValue(0);
person.setId(id);
}
if(person!=null){
if(parser.getName().equals("name")){
String
name =
parser.nextText();
person.setName(name);
}
if(parser.getName().equals("age")){
String
age =
parser.nextText();
person.setAge(age);
}
}
break;
case
XmlPullParser.END_TAG:
if(parser.getName().equals("person")){
list.add(person);
person
= null;
}
break;
}
eventType =
parser.next();
}
return list;
}
}
person.xml
<?xml version="1.0" encoding="UTF-8"?>
<persons>
<person id="12">
<name>java</name>
<age>85</age>
</person>
<person
id="15">
<name>Action</name>
<age>39</age>
</person>
</persons>
标签：class java tar ext get strong
原文地址：http://www.cnblogs.com/flyyl/p/3784188.html
