setVolume method
设置音量
Set the volume level of the player.
volume The target volume value, clamped between 0 and 1.
Implementation
void setVolume(double volume) async {
  final value = clampDouble(volume, 0, 1);
  await _aliPlayer.setVolume(value);
  double newValue = await _aliPlayer.getVolume();
  logi("setVolume: $volume, real: $newValue");
  volumeNotifier.value = newValue;
}