iOS: Change Device Volume

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Using iPodMusicPlayer would affect the actual iPod volume setting as well. If you want to avoid that, use this:

#import <MediaPlayer/MediaPlayer.h>
// ...
MPMusicPlayerController *musicPlayer = [MPMusicPlayerController applicationMusicPlayer];
musicPlayer.volume = 1.0f;

As the user holex correctly mentioned the property volume in MPMusicPlayerController is deprecated in iOS 7.

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