Site icon Embarcadero RAD Studio, Delphi, & C++Builder Blogs

How to control “the system audio volume” of iOS

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.

[crayon-672a48cecf61e243297566/]

Form design

Arrange “Up” and “Down” two TButton. Use this button to control the volume.

Add MPVolumeView to the main form Class

Add “_di_MPVolumeView” and “_di_UISlider” to the form class.

[crayon-672a48cecf625510407960/]

Main Form constructor

[crayon-672a48cecf627943155903/]

Code of volume down button

[crayon-672a48cecf628372093356/]

Code of volume up button

[crayon-672a48cecf62f846247531/]

Execute the program.

With Rad’s Studio Native Ios App builder, you can make apps on macOS & Ios in the Delphi or C++ environments. Try the free tool here.
Exit mobile version