AudioServicesPlaySystemSound Volume Control

Question

I wanted to ask if there is a way to control the volume of the sound effect of the system. When I press the volume button (up and down) in a game, the sound effects of the system are not affected. I also read that the ringer volume should influence this. But it’s strange that when I press the volume up and down, I don’t see the melody text on top of the speaker icon. I only see the speaker icon without a call from above when I press the volume control. Does anyone know why?

Thank.

Answer 1

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Answer 2

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    [[AVAudioSession sharedInstance]
     setCategory:AVAudioSessionCategoryPlayAndRecord
     withOptions:AVAudioSessionCategoryOptionDefaultToSpeaker
     error:nil];