Detect Headphones Unplugged - Monotouch

Question

Is there a way to detect if headphones are unplugged in Monotouch? I am trying to look for the AudioSessionAddPropertyListener method but don't see it. What this method ported over?

Here is Apple's docs: http://developer.apple.com/library/ios/#documentation/AudioToolbox/Reference/AudioSessionServicesReference/Reference/reference.html#//apple_ref/doc/constant_group/Audio_Session_Interruption_States

If anyone wants to see the code for how to do this, you can do the following:

AudioSession.PropertyListener p = delegate(AudioSessionProperty prop, int size, IntPtr data) {

            NSDictionary propertyDictionary = new NSDictionary(data);

            if (propertyDictionary.ContainsKey(NSObject.FromObject("OutputDeviceDidChange_OldRoute")))
            {
                string oldRoute = propertyDictionary.ValueForKey(new NSString("OutputDeviceDidChange_OldRoute")).ToString();

                if (oldRoute == "Headphone")
                {
                    if (audioPlayer != null)
                    {
                        audioPlayer.Pause();    
                    }
                }
            }
        };

        AudioSession.AddListener(AudioSessionProperty.AudioRouteChange, p);

score 1 · Accepted Answer · answered Dec 11 '11 at 21:27

1

Is there a way to detect if headphones are unplugged in Monotouch?

I'm not sure but...

I am trying to look for the AudioSessionAddPropertyListener method but don't see it. What this method ported over?

The native call to AudioSessionAddPropertyListener maps to MonoTouch's AudioSession.AddListener static method.

answered Dec 11 '11 at 21:27

poupou

43,413
6
77
174

Excellent. That is what I needed. Is there a spot you looked to see how the API is mapped (between MonoTouch and the native call)? – user472292 Dec 12 '11 at 19:23
Miguel's rosetta stone http://tirania.org/tmp/rosetta.html is the best resource when dealing with (Objective-C) selectors but it does not currently shows the pinvokes to C libraries. In general the bindings keeps the naming similar enough that MonoDevelop IDE autocompletion should suggest you likely candidates. – poupou Dec 12 '11 at 19:42

Detect Headphones Unplugged - Monotouch

1 Answers1