Audio Demo

package org.example.audio;

import android.app.Activity;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class AudioDemo extends Activity implements OnClickListener {
	private static final String TAG = "AudioDemo";
	private static final String isPlaying = "Media is Playing"; 
	private static final String notPlaying = "Media has stopped Playing"; 
	
	MediaPlayer player;
	Button playerButton;

	public void onClick(View v) {
		Log.d(TAG, "onClick: " + v);
		if (v.getId() == R.id.play) {
			playPause();
		}
	}

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);

		player = MediaPlayer.create(this, R.raw.robotrock);
		player.setLooping(false); // Set looping

		// Get the button from the view
		playerButton = (Button) this.findViewById(R.id.play);
		playerButton.setText(R.string.stop_label);
		playerButton.setOnClickListener(this);

		// Begin playing selected media
		demoPlay();

		// Release media instance to system
		player.release();
		
	}

	@Override
	public void onPause() {
		super.onPause();
		player.pause();
	}

	// Initiate media player pause
	private void demoPause(){
            player.pause();
            playerButton.setText(R.string.play_label);
            Toast.makeText(this, notPlaying, Toast.LENGTH_LONG).show();
            Log.d(TAG, notPlaying);
	}
	
	// Initiate playing the media player
	private void demoPlay(){
            player.start();
            playerButton.setText(R.string.stop_label);
            Toast.makeText(this, isPlaying, Toast.LENGTH_LONG).show();
            Log.d(TAG, isPlaying);
	}
	
	// Toggle between the play and pause
	private void playPause() {
		if(player.isPlaying()) {
		  demoPause();
		} else {
		  demoPlay();
		}	
	}
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:orientation="vertical" android:layout_width="fill_parent"
	android:layout_height="fill_parent">
	<TextView android:layout_width="fill_parent"
		android:layout_height="wrap_content" android:text="@string/hello" />
	<Button android:layout_width="wrap_content"
		android:layout_height="wrap_content" android:id="@+id/play"
		android:text="@string/play_label"></Button>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="hello">Hello World, AudioDemo</string>
    <string name="app_name">Audio Demo</string>
<string name="play_label">Play</string>
<string name="stop_label">Stop</string>
</resources>