问当gps被禁用时无法调用地理位置错误

EN

var locOptions = {
      maximumAge : 10000,
      timeout : 5000,
      enableHighAccuracy : true
    };
function onLocationSuccess(position) {
    console.log(position);
    // alert('success');
    $rootScope.pos = new google.maps.LatLng(position.coords.latitude,
                                                     position.coords.longitude);
    var geocoder = new google.maps.Geocoder();
    geocoder.geocode({'latLng': $rootScope.pos}, function address(results, status) {
        if (status == google.maps.GeocoderStatus.OK) {
            if (results[1]) {
                $rootScope.currentposition = results[1].formatted_address;
                console.log($rootScope.currentposition);
                if($scope.switchToState=='signedIn'){
                        $ionicLoading.hide();
                        $http.get($rootScope.url +'api/price/?key=movo1026868hk738hkl')
                            .success(function(response) {
                                $rootScope.truckfare=response.datasets;
                            });
                    console.log('reached here2');
                        $state.go('app.home');
                    }
                    else{
                            $ionicLoading.hide();
                        $state.go('start');
                    }
            }
        }
    });
}

// onError Callback receives a PositionError object
//
function onLocationError(error) {
    alert("Geolocation error: #" + e.code + "\n" + e.message);
}
navigator.geolocation.getCurrentPosition(onLocationSuccess, onLocationError, locOptions);