This really depends on your specific use case, but a simple way would follow a pattern like this:
.controller('MainCtrl', function ( $scope, myService ) {
$scope.loading = true;
myService.get().then( function ( response ) {
$scope.items = response.data;
}, function ( response ) {
// TODO: handle the error somehow
}).finally(function() {
// called no matter success or failure
$scope.loading = false;
});
});
And then react to it in your template:
<div class="spinner" ng-show="loading"></div>
<div ng-repeat="item in items>{{item.name}}</div>