setAppVolume method
Sets the current app volume.
volume
should be from 0 (muted) to 1 (full media volume).
The default value is 1.
For more details about the volume control, visit
https://developers.google.com/android/reference/com/google/android/gms/ads/MobileAds#public-static-void-setappvolume-float-volume
Implementation
Future<void> setAppVolume(double volume) {
return instanceManager.setAppVolume(volume);
}