三、在Activity中显示操作
package com.example.lession03_xml;
import java.io.InputStream;
import java.util.List;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import com.example.domain.Person;
import com.example.service.XMLContentHandler;
import com.example.service.XMLDomService;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.inputmethod.InputBinding;
import android.widget.Button;
import android.widget.Toast;
public class XmlActivityextends Activity {
//声明组件
public Button btn_sax,btn_dom,btn_pull;
public XMLDomService xmlDomService;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//设置显示的视图
setContentView(R.layout.activity_xml);
xmlDomService=new XMLDomService();
//根据id获取组件
btn_sax=(Button) findViewById(R.id.btn_sax);
btn_dom=(Button) findViewById(R.id.btn_dom);
btn_pull=(Button) findViewById(R.id.btn_pull);
//为按钮注册事件
btn_sax.setOnClickListener(new MyOnclickListener());
btn_dom.setOnClickListener(new MyOnclickListener());
btn_pull.setOnClickListener(new MyOnclickListener());
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.xml, menu);
return true;
}
//匿名类
class MyOnclickListener implements OnClickListener{
@Override
public void onClick(View v) {
int id=v.getId();
switch (id) {
case R.id.btn_sax:
Toast.makeText(XmlActivity.this,"采用SAX解析", Toast.LENGTH_LONG).show();
try{
//SAX解析的工厂对象
SAXParserFactory factory=SAXParserFactory.newInstance();
//得到sax的解析器
SAXParser saxParser=factory.newSAXParser();
//创建handler对象
XMLContentHandler handlerService=new XMLContentHandler();
InputStream is=getAssets().open("csdn.xml");
//直接解析
saxParser.parse(is, handlerService);
//通过handlerService对象获取
Toast.makeText(XmlActivity.this,"----"+handlerService, Toast.LENGTH_LONG).show();
}catch(Exception e){
e.printStackTrace();
}
break;
case R.id.btn_dom:
InputStream is=null;
try{
//获取读取文件的输入流对象
is=getAssets().open("csdn.xml");
//采用dom解析
List<Person> persons=xmlDomService.parseXML(is);
//简单测试
//Toast.makeText(XmlActivity.this, ""+persons.get(0).getName(), Toast.LENGTH_LONG).show();
Toast.makeText(XmlActivity.this,"采用DOM解析"+persons.get(0).getName(), Toast.LENGTH_LONG).show();
}catch(Exception e){
e.printStackTrace();
}
break;
case R.id.btn_pull:
Toast.makeText(XmlActivity.this,"采用PULL解析", Toast.LENGTH_LONG).show();
break;
default:
break;
}
}
}
}
