SoundPool 一般用来 播放密集,急促而又短暂的音效,比如特技音效:Duang~,游戏用得较多,你也可以为你的 APP 添加上这个音效,比如酷狗音乐进去的时候播放"哈喽,酷狗",其实这个创意还是不错的 间接的让用户知道了当前播放器的音量,不然用户一放歌,突然来了一发小苹果,引得附近 大妈起舞就不好了是吧;除了可以在音乐播放器加,你还可以在普通 APP 加上,比如收到推送 信息或者新的聊天信息,然后播放提示音,比如超级课程表新版本,加了这玩意,收到推送 信息会播放一段短促的"表表"的声音!
SoundPool 对象可以看作是一个可以从 APK 中导入资源 或者从文件系统中载入文件的样本集合。
它利用 MediaPlayer 服务为音频解码为一个原始16位 PCM流。这个特性使得应用程序可以进行流压缩,而无须忍受在播放音频时解压所带来的 CPU 负载和延时。SoundPool 使用音效池的概念来管理多个播放流,如果超过流的最大数目, SoundPool 会基于优先级自动停止先前播放的流,另外,SoundPool 还支持自行设置声音的品质、 音量、 播放比率等参数。
1. 加载声音资源:
参数介绍:
2. 播放控制:
- play(int soundID, float leftVolume, float rightVolume, int priority, int loop, float rate)
参数介绍:
3. 资源释放:
可以调用 release() 方法释放所有 SoundPool 对象占据的内存和资源,当然也可以根据声音 ID 来释放!
2. 布局文件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<com.hjq.bar.TitleBar
android:id="@+id/title_bar"
android:layout_width="match_parent"
android:background="@color/teal_200"
android:layout_height="?android:attr/actionBarSize"
app:title="SoundPool 播放音频"
app:titleStyle="bold"
app:titleSize="18sp"
app:backButton="false"
app:titleColor="@color/white"/>
<Button
android:id="@+id/btn_sound_one"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="音频 1" />
<Button
android:id="@+id/btn_sound_two"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="音频 2" />
<Button
android:id="@+id/btn_sound_three"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="音频 3" />
<Button
android:id="@+id/btn_sound_four"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="音频 4" />
</LinearLayout>
/**
* Created on 2022/6/30 11:31
* SoundPool 铃声尽量不要超过1M
*
* @author Gong Youqiang
*/
public class SoundPlayerUtils {
private static final String TAG = "SoundPlayerUtils";
public enum RingerTypeEnum {
SOUND_ONE,
SOUND_TWO,
SOUND_THREE,
SOUND_FOUR
}
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 SoundPlayerUtils instance = null;
private RingModeChangeReceiver ringModeChangeReceiver;
public static SoundPlayerUtils getInstance() {
if(instance == null) {
synchronized (SoundPlayerUtils.class) {
if(instance == null) {
instance = new SoundPlayerUtils();
}
}
}
return instance;
}
public SoundPlayerUtils() {
this.context = MyApp.CONTEXT;//全局上下文对象,getApplicationContext();
}
public synchronized void play(RingerTypeEnum type) {
Log.e(TAG, "play type->" + type.name());
this.ringerTypeEnum = type;
int ringId = 0;
switch (type) {
case SOUND_ONE:
ringId = R.raw.sound_01;
loop = false;//是否重复播放铃声
break;
case SOUND_TWO:
ringId = R.raw.sound_02;
loop = true;
break;
case SOUND_THREE:
ringId = R.raw.sound_03;
loop = false;
break;
case SOUND_FOUR:
ringId = R.raw.sound_04;
loop = true;
break;
}
if(ringId != 0) {
play(ringId);
}
}
public void stop() {
Log.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);
}
}
}
}
5. 使用
public class MainActivity extends BaseActivity {
@Override
protected int getLayoutId() {
return R.layout.activity_main;
}
@Override
protected void initView() {
}
@OnClick({R.id.btn_sound_one,R.id.btn_sound_two,R.id.btn_sound_three,R.id.btn_sound_four})
public void clicked(View view) {
switch (view.getId()) {
case R.id.btn_sound_one:
SoundPlayerUtils.getInstance().play(SoundPlayerUtils.RingerTypeEnum.SOUND_ONE);
break;
case R.id.btn_sound_two:
SoundPlayerUtils.getInstance().play(SoundPlayerUtils.RingerTypeEnum.SOUND_TWO);
break;
case R.id.btn_sound_three:
SoundPlayerUtils.getInstance().play(SoundPlayerUtils.RingerTypeEnum.SOUND_THREE);
break;
case R.id.btn_sound_four:
SoundPlayerUtils.getInstance().play(SoundPlayerUtils.RingerTypeEnum.SOUND_FOUR);
break;
}
}
}
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