CXCallObserver in Hyperloop and Titanium

callDelegate.js

var CallDelegate = Hyperloop.defineClass('CallDelegate', 'NSObject', ['CXCallObserverDelegate']);

CallDelegate.addMethod({
  selector: 'callObserver:callChanged:',
	instance: true,
	arguments: [
		'CXCallObserver',
		'CXCall'
	],
	callback: function (callObserver, call) {
        if (this.callChanged) {
            this.callChanged(callObserver, call); 
        }
	}
});

module.exports = CallDelegate; // Export, so it can be instantiated with "new"

CXCallObserver-example.js

var CXCallObserver = require('CallKit/CXCallObserver'); // Require native class from CallKit
var CallDelegate = require('callDelegate'); // Require delegate class from app/lib/ (Alloy) or Resources/ (Classic)

var myDelegate = new CallDelegate(); // Instantiate Delegate
myDelegate.callChanged = function (callObserver, call) {
    if (call.hasConnected) {
        Ti.API.info('********** voice call connected **********\n');        
    } else if(call.hasEnded) {
        Ti.API.info('********** voice call disconnected **********/n');        
    }
};

var callObserver = new CXCallObserver(); // Short-form for as alloc().init()
callObserver.setDelegateQueue(myDelegate, null); // Same as "setDelegate:queue:"

// TODO: Simply wrap into a function "initializeCallObserver" and use it somewhere in your app!

Note: for this to work, add Background mode definition in tiapp.xml

<key>UIBackgroundModes</key>
        <array>
          <string>voip</string>
        </array>

Also in my testing I saw that the event fired when call is disconnected has both hasConnected and hasEnded set to 1.
Event for call connected has hasConnected =1 and hasEnded set to 0.

So go see the correct logs; I had to reverse the order of the if clauses.