感谢史蒂夫的提示,我能够实现加载器:
拦截器:
.factory('httpInterceptor', function ($q, $rootScope, $log) {
var numLoadings = 0;
return {
request: function (config) {
numLoadings++;
// Show loader
$rootScope.$broadcast("loader_show");
return config || $q.when(config)
},
response: function (response) {
if ((--numLoadings) === 0) {
// Hide loader
$rootScope.$broadcast("loader_hide");
}
return response || $q.when(response);
},
responseError: function (response) {
if (!(--numLoadings)) {
// Hide loader
$rootScope.$broadcast("loader_hide");
}
return $q.reject(response);
}
};
})
.config(function ($httpProvider) {
$httpProvider.interceptors.push('httpInterceptor');
});
指示:
.directive("loader", function ($rootScope) {
return function ($scope, element, attrs) {
$scope.$on("loader_show", function () {
return element.show();
});
return $scope.$on("loader_hide", function () {
return element.hide();
});
};
}
)
CSS:
#loaderDiv {
position: fixed;
top: 0;
right: 0;
bottom: 0;
left: 0;
z-index: 1100;
background-color: white;
opacity: .6;
}
.ajax-loader {
position: absolute;
left: 50%;
top: 50%;
margin-left: -32px; /* -1 * image width / 2 */
margin-top: -32px; /* -1 * image height / 2 */
display: block;
}
HTML:
<div id="loaderDiv" loader>
<img src="src/assets/img/ajax_loader.gif" class="ajax-loader"/>
</div>