下面是一个使用指令和ng-hide的版本。

这将显示所有通过angular的$http服务调用的加载器。

在模板中:

<div class="装载机" </div>

指令:

angular.module('app')
  .directive('loading', ['$http', function ($http) {
    return {
      restrict: 'A',
      link: function (scope, element, attrs) {
        scope.isLoading = function () {
          return $http.pendingRequests.length > 0;
        };
        scope.$watch(scope.isLoading, function (value) {
          if (value) {
            element.removeClass('ng-hide');
          } else {
            element.addClass('ng-hide');
          }
        });
      }
    };
}]);

通过在元素上使用ng-hide类，可以避免使用jquery。

自定义:添加拦截器

如果你创建了一个加载拦截器，你可以根据条件显示/隐藏加载器。

指令:

var loadingDirective = function ($rootScope) {
  return function ($scope, element, attrs) {
      $scope.$on("loader_show", function () {
          return element.removeClass('ng-hide');
      });
      return $scope.$on("loader_hide", function () {
          return element.addClass('ng-hide');
      });
  };
};

拦截器:

例如:当响应时不显示旋转器。背景=== true; 拦截请求和/或响应设置$rootScope.$broadcast("loader_show");或rootScope。广播美元(“loader_hide”);

关于编写拦截器的更多信息

下面的方法将记录所有的请求，并且只在所有请求完成时隐藏:

app.factory('httpRequestInterceptor', function(LoadingService, requestCount) { return { request: function(config) { if (!config.headers.disableLoading) { requestCount.increase(); LoadingService.show(); } return config; } }; }).factory('httpResponseInterceptor', function(LoadingService, $timeout, error, $q, requestCount) { function waitAndHide() { $timeout(function() { if (requestCount.get() === 0){ LoadingService.hide(); } else{ waitAndHide(); } }, 300); } return { response: function(config) { requestCount.descrease(); if (requestCount.get() === 0) { waitAndHide(); } return config; }, responseError: function(config) { requestCount.descrease(); if (requestCount.get() === 0) { waitAndHide(); } var deferred = $q.defer(); error.show(config.data, function() { deferred.reject(config); }); return deferred.promise; } }; }).factory('requestCount', function() { var count = 0; return { increase: function() { count++; }, descrease: function() { if (count === 0) return; count--; }, get: function() { return count; } }; })

.factory('authHttpResponseInterceptor', ['$q', function ($q) {
        return {
            request: function(config) {
                angular.element('#spinner').show();
                return config;
            },
            response : function(response) {
                angular.element('#spinner').fadeOut(3000);
                return response || $q.when(response);
            },
            responseError: function(reason) {
                angular.element('#spinner').fadeOut(3000);
                return $q.reject(reason);
            }
        };
    }]);



 .config(['$routeProvider', '$locationProvider', '$translateProvider', '$httpProvider',
            function ($routeProvider, $locationProvider, $translateProvider, $httpProvider) {
                $httpProvider.interceptors.push('authHttpResponseInterceptor');
    }
]);

in your Template
<div id="spinner"></div>


css   

#spinner,
#spinner:after {
  border-radius: 50%;
  width: 10em;
  height: 10em;
  background-color: #A9A9A9;
  z-index: 10000;
  position: absolute;
  left: 50%;
  bottom: 100px;
}
@-webkit-keyframes load8 {
  0% {
    -webkit-transform: rotate(0deg);
    transform: rotate(0deg);
  }
  100% {
    -webkit-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}
@keyframes load8 {
  0% {
    -webkit-transform: rotate(0deg);
    transform: rotate(0deg);
  }
  100% {
    -webkit-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

你可以使用angular interceptor来管理http请求调用

  <div class="loader">
    <div id="loader"></div>
  </div>

<script>
    var app = angular.module("myApp", []);

    app.factory('httpRequestInterceptor', ['$rootScope', '$location', function ($rootScope, $location) {
        return {
            request: function ($config) {
                $('.loader').show();
                return $config;
            },
            response: function ($config) {
                $('.loader').hide();
                return $config;
            },
            responseError: function (response) {
                return response;
            }
        };
    }]);

    app.config(['$stateProvider', '$urlRouterProvider', '$httpProvider',
        function ($stateProvider, $urlRouterProvider, $httpProvider) {
            $httpProvider.interceptors.push('httpRequestInterceptor');
        }]);

</script>

https://stackoverflow.com/a/49632155/4976786

如果你正在使用ngResource，对象的$resolved属性对加载器很有用:

对于资源，如下所示:

var User = $resource('/user/:id', {id:'@id'});
var user = User.get({id: 1})

你可以将加载器链接到资源对象的$resolved属性:

<div ng-hide="user.$resolved">Loading ...</div>

用下面的代码创建指令:

$scope.$watch($http.pendingRequests, toggleLoader);

function toggleLoader(status){
  if(status.length){
    element.addClass('active');
  } else {
    element.removeClass('active');
  }
}