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lang: ja-jp
breaks: true
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# Android `SoundPool` を使用してサウンドを鳴らす 2021-08-05

> [Android] SoundPool で効果音を鳴らしてみる
> https://akira-watson.com/android/soundpool.html#2

## `wav`ファイルを`raw`ディレクトリに格納


## activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="154dp"
        android:layout_marginTop="72dp"
        android:layout_marginEnd="163dp"
        android:text="Button"
        android:onClick="OnClickButton1"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:ignore="HardcodedText,UsingOnClickInXml" />

</androidx.constraintlayout.widget.ConstraintLayout>


## MainActivity.java

public class MainActivity extends AppCompatActivity {

    private SoundPool soundPool;

    private int soundClear;
    private int soundGetCin;
    private int soundPoCo;
    private int soundPopup;
    private int soundQuizRight;
    private int soundStart;
    private int soundWarning;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        AudioAttributes audioAttributes = new AudioAttributes.Builder()
                // USAGE_MEDIA
                // USAGE_GAME
                .setUsage(AudioAttributes.USAGE_GAME)
                // CONTENT_TYPE_MUSIC
                // CONTENT_TYPE_SPEECH, etc.
                .setContentType(AudioAttributes.CONTENT_TYPE_SPEECH)
                .build();

        soundPool = new SoundPool.Builder()
                .setAudioAttributes(audioAttributes)
                // ストリーム数に応じて
                .setMaxStreams(7)
                .build();

        soundClear     = soundPool.load(this, R.raw.clear      , 1);
        soundGetCin    = soundPool.load(this, R.raw.get_cin    , 1);
        soundPoCo      = soundPool.load(this, R.raw.po_co      , 1);
        soundPopup     = soundPool.load(this, R.raw.popup      , 1);
        soundQuizRight = soundPool.load(this, R.raw.quiz_right , 1);
        soundStart     = soundPool.load(this, R.raw.start      , 1);
        soundWarning   = soundPool.load(this, R.raw.warning    , 1);

        Log.i("setOnLoadCompleteListener","ui thread_id="+Thread.currentThread().getId());

        soundPool.setOnLoadCompleteListener(new SoundPool.OnLoadCompleteListener() {
            @Override
            public void onLoadComplete(SoundPool soundPool, int sampleId, int status) {
                Log.i("setOnLoadCompleteListener","worker thread_id="+Thread.currentThread().getId());
                Log.i("setOnLoadCompleteListener","sampleId      ="+sampleId);
                Log.i("setOnLoadCompleteListener","status        ="+status);
            }
        });
    }
        
    public void OnClickButton1(View view) {
        Log.i("OnClickButton1","ui thread_id="+Thread.currentThread().getId());

        // *.wav の再生
        // play(ロードしたID, 左音量, 右音量, 優先度, ループ,再生速度)
        soundPool.play(soundClear     , 1.0f, 1.0f, 0, 0, 1);
        sleep();

        soundPool.play(soundGetCin    , 1.0f, 1.0f, 0, 0, 1);
        sleep();

        soundPool.play(soundPoCo      , 1.0f, 1.0f, 0, 0, 1);
        sleep();

        soundPool.play(soundPopup     , 1.0f, 1.0f, 0, 0, 1);
        sleep();

        soundPool.play(soundQuizRight , 1.0f, 1.0f, 0, 0, 1);
        sleep();

        soundPool.play(soundStart     , 1.0f, 1.0f, 0, 0, 1);
        sleep();

        soundPool.play(soundWarning   , 1.0f, 1.0f, 0, 0, 1);
        sleep();

        // ボタンの回転アニメーション
        RotateAnimation buttonRotation = new RotateAnimation(0, 360, view.getWidth()/2, view.getHeight()/2);
        buttonRotation.setDuration(2000);
        view.startAnimation(buttonRotation);
    }

    private void sleep()
    {
        try {
            Thread.sleep(200);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }        

###### tags: `Android` `SoundPool` `音を鳴らす`