Set checkbox checked value in ionic

I would like to know how to retrieve the value selected in a checkbox. I have here this code that is in my controller and that displays my list well in the popup, but it does not retrieve the selected item.

$scope.clik = function() {
   AppService.list($scope.form)
      .then(function(response) {
          var content = '';
          for(i in response){
                 content = content+'<ion-checkbox>'+response[i].name+'</ion-checkbox>';
            }
          var alertPopup = $ionicPopup.alert({
            title: 'List',
            template: $scope.form = content,
          });
      });
}