vogella tutorial --> setOnLoadComplete

package com.example.soundpooltest_1;

import android.media.AudioManager;
import android.media.SoundPool;
import android.os.Bundle;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.ImageButton;
import android.widget.Toast;
import android.support.v4.app.NavUtils;

public class MainActivity extends Activity implements OnTouchListener {    
    
    private ImageButton ibPlayMusic;
    
    private SoundPool   soundpool;
    private int         soundID;
    boolean             loaded = false;
    
    private MenuItem    menExit, menHelp;    
    
    //=======================================================
    
    private void init()
        {                
            
            ibPlayMusic = (ImageButton)findViewById(R.id.ibPlayMusic);           
            
            ibPlayMusic.setOnTouchListener(this);
            
            // Set the hardware buttons to control the music
            this.setVolumeControlStream(AudioManager.STREAM_MUSIC);
            
            // Load the sound
            soundpool = new SoundPool(10, AudioManager.STREAM_MUSIC, 0);
     //       soundpool.setOnLoadCompleteListener(new OnLoadCompleteListener()
                {
                    
                    public void onLoadComplete(SoundPool soundPool, int sampleId, int status)
                        {
                            // TODO Auto-generated method stub
                            
                        }
                });
//            setOnLoadCompleteListener(new OnLoadCompleteListener()
//                {                
//                    
//                    public void onLoadComplete(SoundPool soundpool, int sampleId, int status)
//                        {
//                            loaded = true;
//                        }
//                });
            
            soundID = soundpool.load(this, R.raw.sound2, 1);
        }    
    //=======================================================
    
    
//    public boolean onTouch(View v, MotionEvent event) {
    
    public boolean onTouch(View v, MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            
            // Getting the user sound settings
            AudioManager audioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
            float actualVolume = (float) audioManager
                    .getStreamVolume(AudioManager.STREAM_MUSIC);
            float maxVolume = (float) audioManager
                    .getStreamMaxVolume(AudioManager.STREAM_MUSIC);
            float volume = actualVolume / maxVolume;
            
            // Is the sound loaded already?
            if (loaded) {
                soundpool.play(soundID, volume, volume, 1, 0, 1f);
                Log.e("Test", "Played sound");
            }
        }
        return false;
    }    

    //=======================================================
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        init();
    }

    public boolean onOptionsItemSelected(MenuItem item)
        {
            if(item == menExit)
                {
                    Toast.makeText(this,"In Hamburg sagt man Tschühüüs ;)", Toast.LENGTH_SHORT).show(); 
                    finish();
                }
            
            if(item == menHelp)
                {
                    Toast.makeText(this, "zu Hüüüülföö", Toast.LENGTH_SHORT).show();
                }           
            
            return true;               
            
        }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        
        menExit = menu.add("Beenden");
        menHelp = menu.add("Info");
        
        return true;
    }
    
    //=======================================================
    
   
}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <ImageButton
        android:id="@+id/ibPlayMusic"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:background="@null"
        android:contentDescription="MukkeIcon"
        android:scaleType="fitCenter"
        android:src="@drawable/note2" />

    <ImageView
        android:id="@+id/ivLogo"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="26dp"
        android:src="@drawable/soundmachine" />

</RelativeLayout>