Angular2 找不到命名空间“google" [英] Angular2 Cannot find namespace 'google'

问题描述

我正在使用 angular2-google-maps 和最新版本的 Angular2.我正在尝试将一些本地地图组件功能转换为它们自己的文件 maps.service.ts 中的服务.例如:

I am working with angular2-google-maps and latest version of Angular2. I am trying to convert some of the local map component functions into services in their own file maps.service.ts. For example:

map.component.ts

map.component.ts

getGeoLocation(lat: number, lng: number) {
if (navigator.geolocation) {
    let geocoder = new google.maps.Geocoder();
    let latlng = new google.maps.LatLng(lat, lng);
    let request = { latLng: latlng };
    geocoder.geocode(request, (results, status) => {
      if (status == google.maps.GeocoderStatus.OK) {
        let result = results[0];
        if (result != null) {
          this.fillInputs(result.formatted_address);
        } else {
          alert("No address available!");
        }
      }
    });
}
}

变成类似:maps.service.ts

getGeoLocation(lat: number, lng: number): Observable<google.maps.GeocoderResult[]> {
    let geocoder = new google.maps.Geocoder();
    let latlng = new google.maps.LatLng(lat, lng);
    let request = { latLng: latlng };
    return new Observable((observer: Observer<google.maps.GeocoderResult[]>) => {
        geocoder.geocode({ request }, (
            (results: google.maps.GeocoderResult[], status: google.maps.GeocoderStatus) => {
                if (status == google.maps.GeocoderStatus.OK) {
                    observer.next(results);
                    observer.complete();
                } else {
                    console.log('Geocoding service failed due to: ' +status);
                    observer.error(status);
                }
            }
        ));
    });
}

我遇到的问题是，当我尝试使用 Observer<google.maps.GeocoderResult[]> 时，无法识别 google 变量.我在服务类之外也有 declare var google: any;.

The issue I'm getting is that google variable is not being recognized when I try to use Observer<google.maps.GeocoderResult[]>. I have declare var google: any; outside of the service class as well.

google 变量在我的 map.componenet.ts 中有效，但在 maps.service.ts 中无法识别.

The google variable works in my map.componenet.ts but doesn't get recognized in the maps.service.ts.

推荐答案

Angular 6 &7 个步骤(也应该适用于所有其他 Angular 版本):

1. npm install @types/googlemaps --save-dev
2. 分别在tsconfig.spec.json
中将googlemaps添加到tsconfig.app.json中的types数组中
3. 重启 npm 服务器

最后应该是这样的:

您可以从组件中删除两种声明类型:import {} from '@types/googlemaps'; declare var google: any; 您不必包括其中任何一个.

You can delete both declaration types from the components: import {} from '@types/googlemaps'; declare var google: any; You don't have to include any of them.

PS:如果您使用 agm-s GoogleMapsAPIWrapper.getNativeMap()，您必须在使用之前转换地图对象.例如打开流量层:

PS: If you are using agm-s GoogleMapsAPIWrapper.getNativeMap() you must convert the map object before you use it. For example turning on the traffic layer:

this.apiWrapper.getNativeMap().then(map => {
    this.trafficLayer = new google.maps.TrafficLayer();
    const gMap: any = map;
    this.trafficLayer.setMap(gMap as google.maps.Map);
});

这篇关于Angular2 找不到命名空间“google"的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！