ServicesDemo - Using Android Services

package com.example;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class ServicesDemo extends Activity implements OnClickListener {
  private static final String TAG = "ServicesDemo";
  Button buttonStart, buttonStop;

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

    buttonStart = (Button) findViewById(R.id.buttonStart);
    buttonStop = (Button) findViewById(R.id.buttonStop);

    buttonStart.setOnClickListener(this);
    buttonStop.setOnClickListener(this);
  }

  public void onClick(View src) {
    switch (src.getId()) {
    case R.id.buttonStart:
      Log.d(TAG, "onClick: starting srvice");
      startService(new Intent(this, MyService.class));
      break;
    case R.id.buttonStop:
      Log.d(TAG, "onClick: stopping srvice");
      stopService(new Intent(this, MyService.class));
      break;
    }
  }
}

package com.example;

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

public class MyService extends Service {
	private static final String TAG = "MyService";
	MediaPlayer player;
	
	@Override
	public IBinder onBind(Intent intent) {
		return null;
	}
	
	@Override
	public void onCreate() {
		Toast.makeText(this, "My Service Created", Toast.LENGTH_LONG).show();
		Log.d(TAG, "onCreate");
		
		player = MediaPlayer.create(this, R.raw.braincandy);
		player.setLooping(false); // Set looping
	}

	@Override
	public void onDestroy() {
		Toast.makeText(this, "My Service Stopped", Toast.LENGTH_LONG).show();
		Log.d(TAG, "onDestroy");
		player.stop();
	}
	
	@Override
	public void onStart(Intent intent, int startid) {
		Toast.makeText(this, "My Service Started", Toast.LENGTH_LONG).show();
		Log.d(TAG, "onStart");
		player.start();
	}
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.example" android:versionCode="1" android:versionName="1.0">
  <application android:icon="@drawable/icon" android:label="@string/app_name">
    <activity android:name=".ServicesDemo" 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:enabled="true" android:name=".MyService" />
  </application>
  <uses-sdk android:minSdkVersion="3" />
</manifest> 

<?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"
    android:gravity="center">
<TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" android:text="Services Demo" android:gravity="center" android:textSize="20sp" android:padding="20dp"/>
<Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/buttonStart" android:text="Start"></Button>
<Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Stop" android:id="@+id/buttonStop"></Button>
</LinearLayout>