android - Android：有没有办法检测来自 SoundPool 的声音是否仍在播放

Question

我正在写一个音板。我希望这样当一个人按下按钮播放声音时，它会首先查看声音是否仍在播放。所以它可以停止那个声音并开始新的声音。

是否可以查看声音 id 是否仍在播放，我正在使用以下代码来启动我的声音

// Sound code
void StartSound(int id)
{
   AudioManager audioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
    float actualVolume = (float) audioManager
            .getStreamVolume(AudioManager.STREAM_MUSIC);
    float maxVolume = (float) audioManager
            .getStreamMaxVolume(AudioManager.STREAM_MUSIC);

    float volume=(float) ((float)cGlobals.gVol/100.00);
    // Is the sound loaded already?

        soundPool.play(id, volume, volume, 1, 0, 1f);

}

Answer 1

您可以isMusicActive()使用AudioManager.

Answer 2

class AudioSystem{
    /*
     * Checks whether the specified stream type is active.
     *
     * return true if any track playing on this stream is active.
     */
    public static native boolean isStreamActive(int stream, int inPastMs);
}

对于流：

/** The audio stream for phone calls */
public static final int STREAM_VOICE_CALL = AudioSystem.STREAM_VOICE_CALL;
/** The audio stream for system sounds */
public static final int STREAM_SYSTEM = AudioSystem.STREAM_SYSTEM;
/** The audio stream for the phone ring */
public static final int STREAM_RING = AudioSystem.STREAM_RING;
/** The audio stream for music playback */
public static final int STREAM_MUSIC = AudioSystem.STREAM_MUSIC;
/** The audio stream for alarms */
public static final int STREAM_ALARM = AudioSystem.STREAM_ALARM;
/** The audio stream for notifications */
public static final int STREAM_NOTIFICATION = AudioSystem.STREAM_NOTIFICATION;
/** @hide The audio stream for phone calls when connected to bluetooth */
public static final int STREAM_BLUETOOTH_SCO = AudioSystem.STREAM_BLUETOOTH_SCO;
/** @hide The audio stream for enforced system sounds in certain countries (e.g camera in Japan) */
public static final int STREAM_SYSTEM_ENFORCED = AudioSystem.STREAM_SYSTEM_ENFORCED;
/** The audio stream for DTMF Tones */
public static final int STREAM_DTMF = AudioSystem.STREAM_DTMF;
/** @hide The audio stream for text to speech (TTS) */
public static final int STREAM_TTS = AudioSystem.STREAM_TTS;

检查您要检查的任何类型的音频流。例如， AudioSystem.isStreamActive(STREAM_MUSIC, 0)检查是否有任何音乐处于活动状态。