安卓10的所有原生音频通道
/* Used to identify the volume of audio streams for phone calls /
public static final int STREAM_VOICE_CALL = AudioSystem.STREAM_VOICE_CALL; 通话
/** Used to identify the volume of audio streams for system sounds */
public static final int STREAM_SYSTEM = AudioSystem.STREAM_SYSTEM; 系统
/** Used to identify the volume of audio streams for the phone ring */
public static final int STREAM_RING = AudioSystem.STREAM_RING; 来电铃声
/** Used to identify the volume of audio streams for music playback */
public static final int STREAM_MUSIC = AudioSystem.STREAM_MUSIC; 音频流
/** Used to identify the volume of audio streams for alarms */
public static final int STREAM_ALARM = AudioSystem.STREAM_ALARM; 闹钟
/** Used to identify the volume of audio streams for notifications */
public static final int STREAM_NOTIFICATION = AudioSystem.STREAM_NOTIFICATION; 通知
/** @hide Used to identify the volume of audio streams for phone calls when connected
* to bluetooth */
public static final int STREAM_BLUETOOTH_SCO = AudioSystem.STREAM_BLUETOOTH_SCO; 蓝牙通话
/** @hide Used to identify the volume of audio streams for enforced system sounds
* in certain countries (e.g camera in Japan) */
public static final int STREAM_SYSTEM_ENFORCED = AudioSystem.STREAM_SYSTEM_ENFORCED; 系统强制音(低电量提醒)
/** Used to identify the volume of audio streams for DTMF Tones */
public static final int STREAM_DTMF = AudioSystem.STREAM_DTMF; 电话拨号盘
/** @hide Used to identify the volume of audio streams exclusively transmitted through the
* speaker (TTS) of the device */
public static final int STREAM_TTS = AudioSystem.STREAM_TTS; TTS语音播报