Android Play sounds via SoundPool

 We will create an application which will start playing a sound once the finger touches the display. Create an Android project called "de.vogella.android.soundpool" with an Activity called PlaySound.

Change the layout main.xml to the following.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="Click on the screen to start playing" >
    </TextView>

</LinearLayout>

Download a sound which you want to play. For example the Free Sound Effects site contains several free sound examples.

Put the sound file into your "res/raw" folder under the name "sound1.ogg". This assumes that you downloaded an ogg file.

Create the following coding for your activity.

package de.vogella.android.soundpool;

import android.app.Activity;
import android.media.AudioManager;
import android.media.SoundPool;
import android.media.SoundPool.OnLoadCompleteListener;
import android.os.Bundle;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;

public class PlaySound extends Activity implements OnTouchListener {
  private SoundPool soundPool;
  private int soundID;
  boolean loaded = false;

 
/** Called when the activity is first created. */

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    View view = findViewById(R.id.textView1);
    view.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() {
      @Override
      public void onLoadComplete(SoundPool soundPool, int sampleId,
          int status) {
        loaded = true;
      }
    });
    soundID = soundPool.load(this, R.raw.sound1, 1);

  }

  @Override
  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;
  }
}

If you touch your Activity your sound should be played. It will use the current volume settings.