Detecting iPhone mute switch in iOS 5

Question

I know that Apple does not provide a way to detect the state of the iPhone mute/silence switch in iOS 5. However, I have I tried a technique m

Answer 1

UPDATE: Sorry the below code posted works fine for me but I am using iOS4. For iOS5 this answer is what will solve your problem - Detecting the iPhone's Ring / Silent / Mute switch using AVAudioPlayer not working?

This piece of code is what you need. Define a global gAudioSessionInited var. This flag tells you whether your mute switch is on or off.

// "Ambient" makes it respect the mute switch. Must call this once to init session
if (!gAudioSessionInited)
{
    AudioSessionInterruptionListener inInterruptionListener = NULL;
    OSStatus error;
    if ((error = AudioSessionInitialize (NULL, NULL, inInterruptionListener, NULL)))
        NSLog(@"*** Error *** error in AudioSessionInitialize: %d.", error);
    else
        gAudioSessionInited = YES;
}

SInt32  ambient = kAudioSessionCategory_AmbientSound;
if (AudioSessionSetProperty (kAudioSessionProperty_AudioCategory, sizeof (ambient), &ambient))
{
    NSLog(@"*** Error *** could not set Session property to ambient.");
}