XML Parsing

AndroidXMLParsingActivity.java

package com.androidhive.xmlparsing;

import java.util.ArrayList;
import java.util.HashMap;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

import android.app.ListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;

public class AndroidXMLParsingActivity extends ListActivity {

    // All static variables
    static final String URL = "http://api.androidhive.info/pizza/?format=xml";
    // XML node keys
    static final String KEY_ITEM = "item"; // parent node
    static final String KEY_ID = "id";
    static final String KEY_NAME = "name";
    static final String KEY_COST = "cost";
    static final String KEY_DESC = "description";

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        ArrayList<HashMap<String, String>> menuItems = new ArrayList<HashMap<String, String>>();

        XMLParser parser = new XMLParser();
        String xml = parser.getXmlFromUrl(URL); // getting XML
        Document doc = parser.getDomElement(xml); // getting DOM element

        NodeList nl = doc.getElementsByTagName(KEY_ITEM);
        // looping through all item nodes <item>
        for (int i = 0; i < nl.getLength(); i++) {
            // creating new HashMap
            HashMap<String, String> map = new HashMap<String, String>();
            Element e = (Element) nl.item(i);
            // adding each child node to HashMap key => value
            map.put(KEY_ID, parser.getValue(e, KEY_ID));
            map.put(KEY_NAME, parser.getValue(e, KEY_NAME));
            map.put(KEY_COST, "Rs." + parser.getValue(e, KEY_COST));
            map.put(KEY_DESC, parser.getValue(e, KEY_DESC));

            // adding HashList to ArrayList
            menuItems.add(map);
        }

        // Adding menuItems to ListView
        ListAdapter adapter = new SimpleAdapter(this, menuItems,
                R.layout.list_item,
                new String[] { KEY_NAME, KEY_DESC, KEY_COST }, new int[] {
                        R.id.name, R.id.desciption, R.id.cost });
        setListAdapter(adapter);
        // selecting single ListView item
        ListView lv = getListView();
        lv.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
                // getting values from selected ListItem
                String name = ((TextView) view.findViewById(R.id.name)).getText().toString();
                String cost = ((TextView) view.findViewById(R.id.cost)).getText().toString();
                String description = ((TextView) view.findViewById(R.id.desciption)).getText().toString();
               
                // Starting new intent
                Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class);
                in.putExtra("n", name);
                in.putExtra("c", cost);
                in.putExtra("d", description);
                startActivity(in);

            }
        });
    }
}


SingleMenuItemActivity.java

package com.androidhive.xmlparsing;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;

public class SingleMenuItemActivity  extends Activity {
   
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.single_list_item);
        
        // getting intent data
        Intent in = getIntent();
        
        // Get XML values from previous intent
        String name = in.getStringExtra("n");
        String cost = in.getStringExtra("c");
        String description = in.getStringExtra("d");
        
        // Displaying all values on the screen
        TextView lblName = (TextView) findViewById(R.id.name_label);
        TextView lblCost = (TextView) findViewById(R.id.cost_label);
        TextView lblDesc = (TextView) findViewById(R.id.description_label);
        
        lblName.setText(name);
        lblCost.setText(cost);
        lblDesc.setText(description);
    }
}

XMLParser.java





package com.androidhive.xmlparsing;

import java.io.IOException;
import java.io.StringReader;
import java.io.UnsupportedEncodingException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

import android.util.Log;

public class XMLParser {

    // constructor
    public XMLParser() {

    }

    /**
     * Getting XML from URL making HTTP request
     * @param url string
     * */
    public String getXmlFromUrl(String url) {
        String xml = null;

        try {
            // defaultHttpClient
            DefaultHttpClient httpClient = new DefaultHttpClient();
            HttpPost httpPost = new HttpPost(url);

            HttpResponse httpResponse = httpClient.execute(httpPost);
            HttpEntity httpEntity = httpResponse.getEntity();
            xml = EntityUtils.toString(httpEntity);

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        // return XML
        return xml;
    }
   
    /**
     * Getting XML DOM element
     * @param XML string
     * */
    public Document getDomElement(String xml){
        Document doc = null;
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        try {

            DocumentBuilder db = dbf.newDocumentBuilder();

            InputSource is = new InputSource();
                is.setCharacterStream(new StringReader(xml));
                doc = db.parse(is); 

            } catch (ParserConfigurationException e) {
                Log.e("Error: ", e.getMessage());
                return null;
            } catch (SAXException e) {
                Log.e("Error: ", e.getMessage());
                return null;
            } catch (IOException e) {
                Log.e("Error: ", e.getMessage());
                return null;
            }

            return doc;
    }
   
    /** Getting node value
      * @param elem element
      */
     public final String getElementValue( Node elem ) {
     Node child;
  if( elem != null){
         if (elem.hasChildNodes()){
                 for( child = elem.getFirstChild(); child != null; child = child.getNextSibling() ){
                 if( child.getNodeType() == Node.TEXT_NODE  ){
                    //System.out.println(child.getNodeValue());
                         return child.getNodeValue();
                    
                 }
                 }
             }
  }
         
         return "";
     }
     
     /**
      * Getting node value
      * @param Element node
      * @param key string
      * */
     public String getValue(Element item1, String str) {       
            NodeList n = item1.getElementsByTagName(str);
        //    System.out.println(n.item(0));
            return this.getElementValue(n.item(0));
        }
}

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical">
    <!-- Main ListView
         Always give id value as list(@android:id/list)
    -->
    <ListView
        android:id="@android:id/list"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"/>

</LinearLayout>

list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"> 
    <LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">
        <!-- Name Label -->
        <TextView
            android:id="@+id/name"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:textColor="#dc6800"
            android:textSize="16sp"
            android:textStyle="bold"
            android:paddingTop="6dip"
            android:paddingBottom="2dip" />
        <!-- Description label -->
        <TextView
            android:id="@+id/desciption"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:textColor="#acacac"
            android:paddingBottom="2dip">
        </TextView>
        <!-- Linear layout for cost and price Cost: Rs.100 -->
        <LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <!-- Cost Label -->
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textColor="#5d5d5d"
            android:gravity="left"
            android:textStyle="bold"
            android:text="Cost: " >
        </TextView>
        <!-- Price Label -->
        <TextView
            android:id="@+id/cost"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textColor="#acacac"
            android:textStyle="bold"
            android:gravity="left">
        </TextView>
        </LinearLayout>
    </LinearLayout>

</LinearLayout>

single_list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="match_parent"
  android:layout_height="match_parent">
  <!-- Name Label -->
  <TextView android:id="@+id/name_label"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:textSize="25dip"
            android:textStyle="bold"
            android:paddingTop="10dip"
            android:paddingBottom="10dip"
            android:textColor="#dc6800"/>
  <!-- Description Label -->
  <TextView android:id="@+id/description_label"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:textColor="#acacac"/>
  <!-- Price Label -->
  <TextView android:id="@+id/cost_label"
              android:layout_width="fill_parent"
              android:layout_height="wrap_content"
              android:textStyle="bold"/>
</LinearLayout>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.androidhive.xmlparsing"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="8" />

    <application
        android:icon="@drawable/icon"
        android:label="@string/app_name" >
        <activity
            android:label="@string/app_name"
            android:name=".AndroidXMLParsingActivity" >
            <intent-filter >
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <!-- Single List Item View -->
        <activity
            android:label="Single Menu Item"
            android:name=".SingleMenuItemActivity" >
        </activity>
    </application>

    <uses-permission android:name="android.permission.INTERNET" />

</manifest>

Alarm with Service and BroadcastReceiver

 AlarmServiceActivity.java


package com.ann;

import android.app.Activity;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class AlarmServiceActivity extends Activity {
    EditText txt;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       
       
    }
    public void start(View v){
        txt=(EditText)findViewById(R.id.txt);
        int i=Integer.parseInt(txt.getText().toString());
        Intent intent=new Intent(this,myBroadcast.class);
        PendingIntent intt=PendingIntent.getBroadcast(this, 234, intent, 0);
       
        AlarmManager alarm=(AlarmManager)getSystemService(ALARM_SERVICE);
       alarm.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()+(i*1000), intt);
       //startService(new Intent(this,Myservice.class));

       Toast.makeText(this, "Alarm set in " + i + " seconds",
                Toast.LENGTH_LONG).show();
       
    }
   public void stop(View v){
      Intent i=new Intent(this,Myservice.class);
      stopService(i);
   }
  
   
}

myBroadcast.java

package com.ann;


import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.media.MediaPlayer;
import android.sax.StartElementListener;
import android.widget.Toast;

public class myBroadcast extends BroadcastReceiver {
//MediaPlayer mp;
    @Override
    public void onReceive(Context context, Intent intent) {
        Intent sintent=new Intent(context,AlarmServiceActivity.class);
        sintent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(sintent);
        Toast.makeText(context, "Don't panik but your time is up!!!!.",
                Toast.LENGTH_LONG).show();

        context.startService(new Intent(context,Myservice.class));


}
 }

Myservice.java


package com.ann;

import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.IBinder;
import android.util.Log;
import android.view.View;
import android.widget.Toast;

public class Myservice extends Service {
    MediaPlayer mp;

    @Override
    public IBinder onBind(Intent intent) {
        // TODO Auto-generated method stub
        return null;
    }
    public void onCreate(){
        mp=new MediaPlayer();
        mp=MediaPlayer.create(this, R.raw.roja);
        //mp.setLooping(false);
       
    }
    @Override
    public void onStart(Intent intent, int startId) {
        // TODO Auto-generated method stub
        try{
        Toast.makeText(this, "My service started ",Toast.LENGTH_LONG).show();   
        Log.w("inside","onStart");

        mp.start();
        }catch(Exception e){}
    }
    @Override   
    public void onDestroy() {   
        Toast.makeText(this, "My Service Stopped", Toast.LENGTH_LONG).show();
        Log.d("inside", "onDestroy");
        mp.stop();
        }   
    
}
}


AndroidManifest.xml 


<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.ann"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="8" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:name=".AlarmServiceActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <service android:name="Myservice"></service>
        <receiver android:name="myBroadcast"></receiver>
    </application>

</manifest>