Angular $scope not updating in Ionic Framework - angularjs

Question

I have a ng-repeat list, that has a button that changes the state of the item, when I click the button I run the following:
$scope.fav = function(item) {
var i = $scope.news.indexOf(item);
console.log('index', i);
console.log('$scope.news[i].fav', $scope.news[i].fav);
console.log('$scope.news[i]', $scope.news[i]);
if ($scope.news[i].fav === 0) {
console.log('is 0');
$scope.news[i].fav = 1;
} else {
console.log('its not 0');
$scope.news[i].fav = 0;
}
};
It finds the object without a problem, but
$scope.news[i].fav = 1;
or
$scope.news[i].fav = 0;
Never changes the final value. (Keeps returning 0)
Already tried adding $scope.$apply(); with no avail..
MARKUP:
<ion-list class="list item-text-wrap" can-swipe="true">
<ion-item class="item item-thumbnail-left animated fadeIn" ng-repeat="item in news | filter: {title: sinTildes} | orderBy: '-pubDate'" href="#/feed/{{item.source}}/{{item.link}}/{{item.title}}" ng-click="openNews(item)">
<img class="gm-thumbnail" src="{{item.image}}">
<h2>{{item.title}}</h2>
<div class="gm-bottom-left">
<h4 class="dark">{{item.source}} -
<span am-time-ago="item.pubDate"> </span>
</h4>
</div>
<div class="gm-bottom-right">
<span class="icon ion-ios-eye ng-hide font-medium assertive" ng-show="item.rss"></span>
</div>
<ion-option-button class="button-stable" ng-click="fav(item)">
<span ng-show="item.fav"> <i class="icon ion-ios-star energized animated fadeIn"></i></span>
<span ng-show="!item.fav"> <i class="icon ion-ios-star-outline dark animated fadeIn"></i></span>
</ion-option-button>
</ion-item>
</ion-list>

Answer 1

It is an Ionic issue.
I fixed it using angular.copy like this:
$scope.fav = function(item) {
var i = $scope.news.indexOf(item);
var news = angular.copy($scope.news);
console.log('index', i);
console.log('news[i].fav', news[i].fav);
console.log('news[i]', news[i]);
if (news[i].fav === 0) {
console.log('is 0');
DBnews.fav(news[i].link, 1).then(function() {
news[i].fav = 1;
$scope.news[i] = {};
$scope.news[i] = angular.copy(news[i]);
})
} else {
console.log('its not 0');
DBnews.fav(news[i].link, 0).then(function() {
news[i].fav = 0;
$scope.news[i] = {};
$scope.news[i] = angular.copy(news[i]);
});
}
};