javascript - $stateParams 返回空对象

Question

我正在尝试从 URL 获取纬度和经度变量，并将它们分配给 Google map 的“center”属性。我没有收到任何错误，但我提醒屏幕中心对象，“纬度”和“经度”都为空。

这是网页:http://alainwebdesign.ca/pl4#/49.2/-122.6

Javascript:

(function (window, ng) {
    ng.module('app', ['uiGmapgoogle-maps', 'ui.router'])



  .config(function ($stateProvider) {
      $stateProvider.state('location', {
          url: '/:lat/:lon',
          templateUrl: 'searchRadius.html',
          controller: 'MapsCtrl',

          resolve: {
              resolveMap: function (MapService, $stateParams) {
                  return MapService.getData($stateParams.lat, $stateParams.lon);
              }
          }
      });

  })

  .config(['uiGmapGoogleMapApiProvider', function (GoogleMapApi) {
      GoogleMapApi.configure({
          key: 'AIzaSyCbRPhVlxgVwBC0bBOgyB-Dn_K8ONrxb_g',
          v: '3',
          libraries: 'weather,geometry,visualization'
      });
  } ])


    .controller('MapsCtrl', ['$scope', "uiGmapLogger", "uiGmapGoogleMapApi", "$interval", "$state", "$stateParams",
      function ($scope, $log, GoogleMapApi, $interval, $state, $stateParams) {
          $log.currentLevel = $log.LEVELS.debug;
          var center = { latitude: parseFloat($stateParams.lat), longitude: parseFloat($stateParams.lon) };
          alert(JSON.stringify(center));
          //Object.freeze(center); caused TypeError: Cannot assign to read only property ('latitude') ...

          console.log($stateParams);

          $scope.map = {
              center: center,
              pan: false,
              zoom: 16,
              refresh: false,
              events: {},
              bounds: {}
          };

          $scope.map.circle = {
              id: 1,
              center: center,
              radius: 500, //(current time - date lost)*km/hour
              stroke: {
                  color: '#08B21F',
                  weight: 2,
                  opacity: 1
              },

              fill: {
                  color: '#08B21F',
                  opacity: 0.5
              },
              geodesic: false, // optional: defaults to false
              draggable: false, // optional: defaults to false
              clickable: true, // optional: defaults to true
              editable: false, // optional: defaults to false
              visible: true, // optional: defaults to true
              events: {
                  dblclick: function () {
                      $log.debug("circle dblclick");
                  },
                  radius_changed: function (gObject) {
                      var radius = gObject.getRadius();
                      $log.debug("circle radius radius_changed " + radius);
                  }
              }
          }





          //Increase Radius:
          $interval(function () {
              $scope.map.circle.radius += 30; //dynamic var
              $state.transitionTo('location', { //location is the state name
                  center: $stateParams.center,
                  radius: $scope.map.circle.radius
              },
    {
        notify: false
    });
          }, 1000); //end of interval function


      } ]); //end of controller

})(window, angular);

searchRadius.html:

<div style="height: 100%"> <!--took out: ng-if="map.center !== undefined"-->
    <ui-gmap-google-map 
                        center='map.center'
                        zoom='map.zoom'
                        draggable='map.draggable'
                        dragging='map.dragging'
                        refresh='map.refresh'
                        options='map.options'
                        events='map.events'
                        pan='map.pan'>


        <ui-gmap-circle 
                        center='map.circle.center'
                        radius='map.circle.radius'
                        fill='map.circle.fill'
                        stroke='map.circle.stroke'
                        clickable='map.circle.clickable'
                        draggable='map.circle.draggable'
                        editable='map.circle.editable'
                        visible='map.circle.visible'
                        events='map.circle.events'>

        </ui-gmap-circle>


    </ui-gmap-google-map>

</div>

index.html:

   <!DOCTYPE html>
<html ng-app="app">

    <head>
    <link rel="stylesheet" href="example/assets/stylesheets/example.css">
    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
    <script src="website_libs/dev_deps.js"></script>
    <script src="https://code.angularjs.org/1.3.6/angular.js"></script>
    <script src="dist/angular-ui-router.js"></script>
    <script src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/2.4.1/lodash.underscore.js"></script>
    <script src="http://cdn.rawgit.com/nmccready/angular-simple-logger/0.0.1/dist/index.js"></script><script src="dist/angular-google-maps_dev_mapped.js"></script>
    <script src="getLoc.js"></script>
    <script src="searchRadius.js"></script>

    <script src='//maps.googleapis.com/maps/api/js?key=AIzaSyD_g7xCYEi-U54SYfTXQ_lukRsChkWgjXQ'></script>

    <title>Pet Locate</title>

    <!--NEW STUFF FROM TOM-->


</head>

    <body style="height: 100%">
        <ui-view></ui-view>
    </body>

</html>

Answer 1

您的问题是您没有使用 <ui-view>并使用 ng-controller 在页面中提供该路线的模板.

然后使用index.html作为路由的模板。

实际上，您有 2 个 Controller 实例，并且应用程序在路由方面根本没有正确设置

在index.html中运行的主ng-controller实例将运行，无论路由如何，这就是为什么它不等待$stateParams或路由更改

根据路由器文档使用其自己的模板设置页面，并且只有 <ui-view>在index.html中