sumon sumon -4 years ago 189
iOS Question

Detect silent mode in iOS 7

is there any way to detect silent mode in iOS 7?

the following code does not work for iOS 5 or later version

-(BOOL)silenced {
// return NO in simulator. Code causes crashes for some reason.
return NO;

CFStringRef state;
UInt32 propertySize = sizeof(CFStringRef);
AudioSessionInitialize(NULL, NULL, NULL, NULL);
AudioSessionGetProperty(kAudioSessionProperty_AudioRoute, &propertySize, &state);
if(CFStringGetLength(state) > 0)
return NO;
return YES;


Answer Source

Check this thread - Detecting the iPhone's Ring / Silent / Mute switch using AVAudioPlayer not working?

And this API - SoundSwitch

How it works:

  • Play an audio file of 0.5 secs, every sec (after completion..)
  • Check how long it took to play the sound
  • Callback called real fast? nothing was played (silent switch is ON)


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