Angular 5-未定义google(Google地图) [英] Angular 5 - google is not defined (Google Maps)

问题描述

我想在Angular 5应用中使用google maps，但遇到了一些问题.

I want to use google maps on my Angular 5 app, but I encourtered some problem.

加载视图时，我在js控制台中收到错误:

When view is loading I receive error in js console:

LoginComponent_Host.ngfactory.js? [sm]:1 ERROR ReferenceError: google is not defined 
at LoginComponent.ngAfterViewInit (login.component.ts:15) 
at callProviderLifecycles (core.js:12428)..

我的组件:

  import {AfterViewInit, Component} from '@angular/core';
    declare let google: any;

    @Component({
      selector: 'app-login',
      templateUrl: './login.component.html',
      styleUrls: ['./login.component.css']
    })
    export class LoginComponent implements AfterViewInit {

       ngAfterViewInit(): void {
          let origin = new google.maps.LatLng(4.0, 2.0 );
          let destination = new google.maps.LatLng(1.0, 1.5);
       }

       constructor() {}
    }

app.module.ts

app.module.ts

import {AgmCoreModule} from '@agm/core';

@NgModule({
  declarations: [
    AppComponent,
    LoginComponent
  ],
  imports: [
    BrowserModule,
    FormsModule,
    HttpModule,
    AppRoutingModule,
    AgmCoreModule.forRoot({
      apiKey: 'KEY'
    })
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule {}

我正在使用npm安装的AgmCoreModule:

I'm using AgmCoreModule installed by npm:

npm install @agm/core --save

我也尝试过这种方式导入LatLang类:

I tried also importing LatLang class this way:

import LatLng = google.maps.LatLng;

并在我的index.html中使用脚本

And use script in my index.html

<script src="https://maps.googleapis.com/maps/api/js?key=KEY&libraries=places" async defer></script>

但是我一直都收到相同的问题. 我想念什么吗?

But all the time I received same issues. Am I missing something?

推荐答案

agm/core加载Google地图&在模块导入中设置您的api密钥，因此您不需要<script src="https://maps.googleapis.com/maps/api/js?key=KEY&libraries=places" async defer></script>

agm/core loads google maps & sets your api key within the module import, so you do not need <script src="https://maps.googleapis.com/maps/api/js?key=KEY&libraries=places" async defer></script>

按照他们的入门教程.您最终会得到类似

Follow their getting started tutorial. You'll end up with something like

<agm-map [latitude]="lat" [longitude]="lng">
    <agm-marker [latitude]="lat" [longitude]="lng"></agm-marker>
</agm-map>

这篇关于Angular 5-未定义google(Google地图)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！