setNormalizedVolume method
Set volume with a single normalized value (0.0 ~ 1.0). This is the recommended API when you don't need left/right channels.
Implementation
Future<void> setNormalizedVolume(double volume) async {
final v = volume.clamp(0.0, 1.0);
await engineInstanceMethodChannel.invokeMethod('setNormalizedVolume', v);
}