Very Simple Android MP3 Player

HelloMusicActivity.java

package com.audroid.music;

import android.app.Activity;
import android.content.Context;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class HelloMusicActivity extends Activity implements OnClickListener{
    /** Called when the activity is first created. */
		MediaPlayer m;
		Context c;
		
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Button btnPlay = (Button)findViewById(R.id.buttonPlay);
        Button btnStop = (Button)findViewById(R.id.buttonStop);
        
        //Register button click listener
        btnPlay.setOnClickListener(this);
        btnStop.setOnClickListener(this);
    }
    
    //Register button click event
    public void onClick(View v){
    	int id = v.getId();
    	if(id == R.id.buttonPlay){
    		play();
    	}
    	else if(id == R.id.buttonStop){
    		stop();
    	}
    	else{
    		//do nothing
    	}
    }
    
    //Play music
    public void play(){
    	c = getApplicationContext();
    	try {
    		stop();
    		m = MediaPlayer.create(c, R.raw.a);
    		m.setLooping(true);
    		m.start();	
		}catch (IllegalStateException e) {
			e.printStackTrace();
		}        
    }

    //Stop music play
    public void stop()
    {        
        try {
        	if(m != null)
        	{
        		m.stop();
    			m.release();
        		m = null;
        	}
		} catch (IllegalStateException e) {
			e.printStackTrace();
		}
    }
}

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" >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/hello" />



    <Button
        android:id="@+id/buttonPlay"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/strplay" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text=""
        android:textAppearance="?android:attr/textAppearanceLarge" />


    <Button
        android:id="@+id/buttonStop"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/strStop" />

</LinearLayout>

Very simple thanks

nice job