MusicWork/main/java/com/example/musicwork/chuangguan/PianoMusic.java

package com.example.musicwork.chuangguan;

import java.util.HashMap;
import android.content.Context;
import android.media.AudioManager;
import android.media.SoundPool;
import android.util.Log;

import com.example.musicwork.R;


public class PianoMusic {
    //由于资源包含了钢琴的全部音效，特此备注：资源里与琴键的对应为：
    //c2 - C; c3 - c; c4 - c1(中央C); c5 - c2
    int Music[] = {
            R.raw.c3, R.raw.d3, R.raw.e3, R.raw.f3, R.raw.g3, R.raw.a3, R.raw.b3,
            R.raw.c4, R.raw.d4, R.raw.e4, R.raw.f4, R.raw.g4, R.raw.a4, R.raw.b4,
            R.raw.c5, R.raw.d5, R.raw.e5, R.raw.f5, R.raw.g5, R.raw.a5, R.raw.b5,
            };

    //使用soundpool播放音效
    SoundPool soundPool;
    HashMap<Integer, Integer> soundPoolMap;

    //加载ID
    public PianoMusic(Context context) {
        soundPool = new SoundPool(10, AudioManager.STREAM_MUSIC, 100);
        soundPoolMap = new HashMap<Integer, Integer>();
        //加载音效ID到SoundPoolMap
        for (int i = 0; i < Music.length; i++) {
            soundPoolMap.put(i, soundPool.load(context, Music[i], 1));
        }
        soundPool.setOnLoadCompleteListener(new SoundPool.OnLoadCompleteListener() {
            @Override
            public void onLoadComplete(SoundPool soundPool, int sampleId, int status) {
                Log.e("map", "音频池资源id为：" + sampleId + "的资源装载完成");
            }
        });
    }

    //播放
    public void soundPlay(int no) {
         soundPool.play(soundPoolMap.get(no), 1,1, 1, 0, 1.0f);
    }

    //结束
    public int soundOver() {

        return soundPool.play(soundPoolMap.get(1), 100, 100, 1, 0, 1.0f);
    }

    @Override
    protected void finalize() throws Throwable {
        soundPool.release();
        super.finalize();
    }
}