前言

对于Android播放一些简短音效，例如提示音，或者铃声，相对于使用MediaPlayer，SoundPool可以节省更多资源，并且可以同时播放多个音效，而且可以针对不同音效设置不同播放品质

实现

SoundPool的具体作用，就不再阐述，直接贴代码

private SoundPool.Builder spBuilder;

private SoundPool soundPool;

private Integer[] fmSound = FmManager.getRawAudios();

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {

if (null == spBuilder) {

spBuilder = new SoundPool.Builder();

AudioAttributes.Builder builder = new AudioAttributes.Builder();

builder.setLegacyStreamType(AudioManager.STREAM_MUSIC);

spBuilder.setAudioAttributes(builder.build());

spBuilder.setMaxStreams(10);

}

if (null == soundPool) {

soundPool = spBuilder.build();

}

} else {

if (null == soundPool) {

soundPool = new SoundPool(10, AudioManager.STREAM_MUSIC, 10); //最多播放10个音效，格式为Steam_music，音质为10

}

}

soundPool.setOnLoadCompleteListener(this);

if (null == fmArray) {

fmArray = new SparseIntArray();

}

if (null == streamArray) {

streamArray = new SparseIntArray();

}

for (int i = 0; i < fmSound.length; i++) {

fmArray.put(i + 1, soundPool.load(this, fmSound[i], 1)); //将需要播放的资源添加到SoundPool中，并保存返回的StreamID，通过StreamID可以停止某个音效

}

private void playFmByPosition(int resultId) {

if (null == soundPool || resultId < 0 || fmArray == null || fmArray.size() < 0 || streamArray == null)

return;

LogUtils.e(resultId + "------------" + fmArray.size());

if (resultId < fmArray.size()) {

if (!FmPlaying.isPlay(resultId)) {

int fmPlayId = soundPool.play(fmArray.get(resultId + 1), 1, 1, 0, -1, 1);

streamArray.put(resultId, fmPlayId);

FmPlaying.setPlay(resultId, true);

} else {

soundPool.stop(streamArray.get(resultId));

streamArray.removeAt(resultId);

FmPlaying.setPlay(resultId, false);

}

}

}

static class FmPlaying {

private static SparseBooleanArray playArray = new SparseBooleanArray();

public static boolean isPlay(int position) {

return playArray.get(position, false);

}

public static void setPlay(int position, boolean play) {

playArray.put(position, play);

}

}

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时间： 2019-11-27