Android：我怎样才能同时控制铃声和音乐的音量？

Question

我有问题，我使用Text To Speech并使用MediaPlayer播放一些声音。据我所知，如果我想控制MediaPlayer的音量，我必须设置：

setVolumeControlStream(AudioManager.STREAM_MUSIC);

但我注意到我的TextToSpeech是由铃声音量控制的。因此，当我设置STREAM_MUSIC时，我可以设置sfx音量，但是当我没有设置STREAM_MUSIC时，无法设置TTS音量，反之亦然。问题是 - 如何同时控制两个卷或如何将我的tts流设置为音乐。最后请给我一些其他的想法。

---

edit1：

所以这是我在我的Singleton

中初始化的我的SoundManager类

public class SoundManager {
private static boolean allowed = true;
private MediaPlayer mediaPlayer;

public SoundManager(Context context) {
    mediaPlayer = new MediaPlayer();
}

public boolean isAllowed() {
    return allowed;
}

public static void setAllowed(boolean allowed) {
    SoundManager.allowed = allowed;
}

public void Play(Context context, String text) {
    if(allowed) {
        int identifier = context.getResources().getIdentifier(text, "raw", context.getPackageName());
        if (mediaPlayer != null) {
            mediaPlayer.reset();
            mediaPlayer.release();
        }
        mediaPlayer = MediaPlayer.create(context, identifier);
        mediaPlayer.start();
    }
}

public void destroy(){
    if (mediaPlayer != null) {
        mediaPlayer.release();
    }
}

这是我的演讲班：

public class Speaker implements TextToSpeech.OnInitListener {

private TextToSpeech tts;

private static boolean ready = false;

private static boolean allowed = true;

public Speaker(Context context){
    tts = new TextToSpeech(context, this);
}

public boolean isAllowed(){
    return allowed;
}

public static boolean isReady() {
    return ready;
}

public static void setAllowed(boolean allowed){
    Speaker.allowed = allowed;
}

@Override
public void onInit(int status) {
    if(status == TextToSpeech.SUCCESS){
        ready = true;
        int result = 0;
        result = tts.setLanguage(Locale.US); // Language set
        if (result == TextToSpeech.LANG_MISSING_DATA || result == TextToSpeech.LANG_NOT_SUPPORTED) {
            ready = false;
        }
    }else{
        ready = false;
    }
}

public void speak(String text){

    // Speak only if the TTS is ready
    // and the user has allowed speech

    if(ready && allowed) {
        HashMap<String, String> hash = new HashMap<String,String>();
        hash.put(TextToSpeech.Engine.KEY_PARAM_STREAM, String.valueOf(AudioManager.STREAM_NOTIFICATION));
        tts.speak(text, TextToSpeech.QUEUE_ADD, hash);
    }
}

public void pause(int duration){
    tts.playSilence(duration, TextToSpeech.QUEUE_ADD, null);
}

// Free up resources
public void destroy(){
    tts.shutdown();
}

在我的活动中onCreate我穿上了 setVolumeControlStream(AudioManager.STREAM_MUSIC); 然后我可以管理音量控制而不是TTS。