背景
在项目实际开发中，可能会遇到播放一段音频文件的需求，比如播放一段话，比如连续播放来电铃声等等，下面介绍使用SoundPool播放音频文件，工具类已封装好，复制粘贴即可使用
实现目标
1、播放音频文件，播放完即停止
2、播放音频文件，循环播放
说明
播放音频文件有很多种方式，MediaPlayer播放音频，AudioTrack播放音频，Ringtone播放音频，SoundPool播放音频，此文章为SoundPool封装实例，复杂实现逻辑可以舍弃了，一句话即可实现播放音频
下边介绍下使用说明
1.播放指定音频文件，选择哪个播放哪个
AVChatSoundPlayer.instance().play(AVChatSoundPlayer.RingerTypeEnum.LY_CONNECT);
2.循环播放音频文件
public synchronized void play(RingerTypeEnum type) this.ringerTypeEnum = type; int ringId = 0; switch (type) { case LY_CONNECT: ringId = R.raw.avchat_ly_connect; loop = false;//是否重复播放铃声 break; case LY_CLOSE: ringId = R.raw.avchat_ly_close; loop = true; break; } }
将loop改成true,即循环播放
3.停止播放音频文件
AVChatSoundPlayer.instance().stop();
所需文件
1.新建raw目录，将所需要播放的音频文件放入，建议音频文件不要超过1M，因为在不同的系统下 SoundPool 表现可能存在不一致
raw.jpg
2.复制工具类AVChatSoundPlayer
/** * SoundPool 铃声尽量不要超过1M * 在不同的系统下 SoundPool 表现可能存在不一致 */ public class AVChatSoundPlayer { private static final String TAG = "Lp_Player"; public enum RingerTypeEnum { LY_CONNECT, LY_CLOSE, MEN_KAI, MEN_CLOSE, RING ; } private Context context; private SoundPool soundPool; private AudioManager audioManager; private int streamId; private int soundId; private boolean loop; private RingerTypeEnum ringerTypeEnum; private boolean isRingModeRegister = false; private int ringMode = -1; private static AVChatSoundPlayer instance = null; private RingModeChangeReceiver ringModeChangeReceiver; public static AVChatSoundPlayer instance() { if(instance == null) { synchronized (AVChatSoundPlayer.class) { if(instance == null) { instance = new AVChatSoundPlayer(); } } } return instance; } public AVChatSoundPlayer() { this.context = AppUMS.mContent;//全局上下文对象，getApplicationContext(); } public synchronized void play(RingerTypeEnum type) { L.e(TAG, "play type->" + type.name()); this.ringerTypeEnum = type; int ringId = 0; switch (type) { case LY_CONNECT: ringId = R.raw.avchat_ly_connect; loop = false;//是否重复播放铃声 break; case LY_CLOSE: ringId = R.raw.avchat_ly_close; loop = false; break; case MEN_KAI: ringId = R.raw.avchat_men_kai; loop = false; break; case MEN_CLOSE: ringId = R.raw.avchat_men_close; loop = false; break; case RING: ringId = R.raw.avchat_ring; loop = true; break; } if(ringId != 0) { play(ringId); } } public void stop() { L.e(TAG, "stop"); if (soundPool != null) { if (streamId != 0) { soundPool.stop(streamId); streamId = 0; } if (soundId != 0) { soundPool.unload(soundId); soundId = 0; } } if (isRingModeRegister) { registerVolumeReceiver(false); } } private void play(int ringId) { initSoundPool(); if (audioManager.getRingerMode() == AudioManager.RINGER_MODE_NORMAL) { soundId = soundPool.load(context, ringId, 1); } } private void initSoundPool() { stop(); if (soundPool == null) { soundPool = new SoundPool(1, AudioManager.STREAM_RING, 0); soundPool.setOnLoadCompleteListener(onLoadCompleteListener); audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE); ringMode = audioManager.getRingerMode(); } registerVolumeReceiver(true); } SoundPool.OnLoadCompleteListener onLoadCompleteListener = new SoundPool.OnLoadCompleteListener() { @Override public void onLoadComplete(SoundPool soundPool, int sampleId, int status) { if (soundId != 0 && status == 0) { if (audioManager.getRingerMode() == AudioManager.RINGER_MODE_NORMAL) { int curVolume = audioManager.getStreamVolume(AudioManager.STREAM_RING); streamId = soundPool.play(soundId, curVolume, curVolume, 1, loop ? -1 : 0, 1f); } } } }; private void registerVolumeReceiver(boolean register){ if (ringModeChangeReceiver == null) { ringModeChangeReceiver = new RingModeChangeReceiver() ; } if (register) { isRingModeRegister = true; IntentFilter filter = new IntentFilter() ; filter.addAction(AudioManager.RINGER_MODE_CHANGED_ACTION) ; context.registerReceiver(ringModeChangeReceiver, filter) ; } else { context.unregisterReceiver(ringModeChangeReceiver); isRingModeRegister = false; } } private class RingModeChangeReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { if (ringMode != -1 && ringMode != audioManager.getRingerMode() && intent.getAction().equals(AudioManager.RINGER_MODE_CHANGED_ACTION)) { ringMode = audioManager.getRingerMode(); play(ringerTypeEnum); } } } }
最后，祝大家开发顺利!
