How to control "the system audio volume" of iOS
September 5, 2017
Author: h.mohri
Use C++Builder 10.2 to control audio volume of iOS.
I used the MPVolumeView class of iOS.
The MPVolumeView class is declared in “iOSapi.MediaPlayer.hpp”.
Include two files.
#include <iOSapi.MediaPlayer.hpp>
#include <iOSapi.UIKit.hpp>
Form design
Arrange “Up” and “Down” two TButton. Use this button to control the volume.
Add MPVolumeView to…