<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<Button
android:id="@+id/button_parse"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="parse" />
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>
MainActivity.java:
package com.ram.saxparserexample;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends Activity {
URL url;
ArrayList<String> list = new ArrayList<String>();
TextView text;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button parse = (Button) findViewById(R.id.button_parse);
text = (TextView) findViewById(R.id.textView1);
parse.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
MyAsync ma = new MyAsync();
ma.execute();
}
});
}
class MyAsync extends AsyncTask<Void, Void, Void> {
ProgressDialog pd;
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
pd = ProgressDialog.show(MainActivity.this, "", "loading");
}
@Override
protected Void doInBackground(Void... params) {
// TODO Auto-generated method stub
try {
url = new URL("http://www.w3schools.com/xml/note.xml");
// Create an instance for SAXParserFactory
SAXParserFactory mySAXParserFactory = SAXParserFactory
.newInstance();
// Create an instance for SAXParser
SAXParser mySAXParser = mySAXParserFactory.newSAXParser();
// Create an instance for XMLReader
XMLReader myXMLReader = mySAXParser.getXMLReader();
// Create an instance for customized handler class
XMLHandler myXMLHandler = new XMLHandler();
// apply handler to the XMLReader
myXMLReader.setContentHandler(myXMLHandler);
// open the connection
InputSource is = new InputSource(url.openStream());
is.setEncoding("ISO-8859-1");
// parse the data
myXMLReader.parse(is);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ParserConfigurationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SAXException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
pd.cancel();
for (String s : list) {
text.append(s + "\n");
}
}
}
class XMLHandler extends DefaultHandler {
boolean to = false;
boolean from = false;
boolean heading = false;
boolean body = false;
@Override
public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
// TODO Auto-generated method stub
super.startElement(uri, localName, qName, attributes);
if (localName.equals("to")) {
this.to = true;
} else if (localName.equals("from")) {
this.from = true;
} else if (localName.equals("heading")) {
this.heading = true;
} else if (localName.equals("body")) {
this.body = true;
}
}
@Override
public void characters(char[] ch, int start, int length)
throws SAXException {
// TODO Auto-generated method stub
super.characters(ch, start, length);
if (this.to) {
list.add(new String(ch, start, length));
} else if (this.from) {
list.add(new String(ch, start, length));
} else if (this.heading) {
list.add(new String(ch, start, length));
} else if (this.body) {
list.add(new String(ch, start, length));
}
}
@Override
public void endElement(String uri, String localName, String qName)
throws SAXException {
// TODO Auto-generated method stub
super.endElement(uri, localName, qName);
if (localName.equals("to")) {
this.to = false;
} else if (localName.equals("from")) {
this.from = false;
} else if (localName.equals("heading")) {
this.heading = false;
} else if (localName.equals("body")) {
this.body = false;
}
}
}
}
AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.ram.saxparserexample"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.ram.saxparserexample.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
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