Angular.js将数据从异步服务传递到范围

您正在处理回调和异步请求。因此，您应该使用$ q服务。只需使用$
rootScope和cordovaReady依赖项将其注入您的服务即可。并像这样向您的功能添加承诺

getCurrentCity: function () {    var deferred = $q.defer();     this.getCurrentPosition(function (position) {      var geoprer = new google.maps.Geoprer();      geoprer.geopre(options,function (results, status) {        var city = address_component.long_name;        $rootScope.$apply(function(){          deferred.resolve(city);        });      });    });    return deferred.promise;}

然后在您的控制器中，执行以下操作来处理承诺。

function MainCtrl($scope, geolocation) {   geolocation.getCurrentCity().then(function(result) {  //result === city     $scope.city = result;     //do whatever you want. This will be executed once city value is available   });     };