Detect Silent mode in iOS5?

I have used this method in the past to detect if the silent switch is enabled:

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

    CFStringRef state;
    UInt32 propertySize = sizeof(CFStringRef);
    AudioSessionInitialize(NULL, NULL, NULL, NULL);
    AudioSessionGetProperty(kAudioSessionProperty_AudioRoute, &propertySize, &state);

    if(CFStringGetLength(state) > 0)
        return NO;
    else
        return YES;
}

This is no longer working in iOS5 on my iPad or iPhone. Is this a known issue? I haven't been able to find any answers on stack overflow or Apple dev forums.

Hope you can help...

Oliver

We won't be able to detect the silent switch state anymore since iOS 5...

The answer from Apple is there on the accepted answer : Detecting the iPhone's Ring / Silent / Mute switch using AVAudioPlayer not working?

Alon Amir

As mentioned in the iOS Developer Library, the property kAudioSessionProperty_AudioRoute is deprecated. Instead, Use the kAudioSessionProperty_AudioRouteDescription

https://developer.apple.com/library/ios/#documentation/AudioToolbox/Reference/AudioSessionServicesReference/Reference/reference.html

This question has been answered here: Detecting the iPhone's Ring / Silent / Mute switch using AVAudioPlayer not working?

来源：https://stackoverflow.com/questions/7798891/detect-silent-mode-in-ios5

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