PULL(解析)

package com.example.pullresolver;


import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;


import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;


import android.app.Activity;
import android.os.Bundle;
import android.util.Xml;
import android.view.View;


public class MainActivity extends Activity {


@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}



public void btnPullResolver(View v){


List<Book> books = pullResolverXml();
System.out.println("哈哈哈 : "+books.toString());

}

/**
* 使用Pull解析xml文档
*/
private List<Book> pullResolverXml(){
try {
//step1:创建一个pull解析器对象
XmlPullParser parser = Xml.newPullParser();
//step2:开始解析xml
InputStream is = getAssets().open("Books.xml");
parser.setInput(is, "utf-8");
int type = parser.getEventType();//0 != 1  true   0 != 0 false
List<Book> books = null;
Book book = null;

//判断是否已经读取xml文档的结尾
while(type != XmlPullParser.END_DOCUMENT){

switch (type) {
case XmlPullParser.START_TAG:
{

if("Books".equals(parser.getName())){
//创建集合
books = new ArrayList<Book>();
}else if("Book".equals(parser.getName())){
//创建Book对象
book = new Book();
}else if("name".equals(parser.getName())){
//取出name标签里面的内容
String name = parser.nextText();
book.setName(name);
}else if("price".equals(parser.getName())){
String price = parser.nextText();
book.setPrice(price);
}else if("author".equals(parser.getName())){
String author = parser.nextText();
book.setAuthor(author);
}

}
break;


case XmlPullParser.END_TAG://结束标签
if("Book".equals(parser.getName())){
//添加到集合
books.add(book);
}

break;
}



//让pull解析器对象往下移动一行
type = parser.next();

}


return books;

} catch (Exception e) {
e.printStackTrace();
}

return null;


}






}