Slider to control Volume
The Slider block can be used to controls the device's hardware button for volume.
Simply select the Volume Control checkbox:
There is no need to set Min or Max value, these are handled by default.
The way IOS and Android handle volume is different.
- For Android, when enabled, only the MEDIA stream will be connected to the slider.
- For iOS, system volume is connected to the slider--just like using the hardware volume keys.