Mute and UnMute in Objective-C on iOS

问题

Hi guys ive been trying to find a way to mute and unmute (that is play audio) via Objective-C in-code, regardless of whether the app is in mute mode or not (physical mute toggled)

I see Instagram does that, where you can press the mute icon even if your phone is mute, and it will play video audio.

回答1:

You want to look at audio session categories

With this code you can play audio when the Ring/Silent switch to silent.

NSError *setCategoryError = nil;
BOOL success = [[AVAudioSession sharedInstance]
            setCategory: AVAudioSessionCategoryPlayback
                  error: &setCategoryError];

if (!success) { /* handle the error in setCategoryError */ }

来源：https://stackoverflow.com/questions/25944330/mute-and-unmute-in-objective-c-on-ios