How to get started with Angular Google Maps (AGM)

Table of Contents

Introduction

The Google Maps integration in angular allows developers to show locations on google maps and information about location in the content window when we move the cursor over the marker.

Create an Angular CLI Project

Run the below command to install Angular CLI.

npm install -g @angular/cli

Fire the following commands for creating a new Angular project with Angular CLI:

ng new angular-google-maps
cd angular-google-maps

Install Angular Google Maps

Now, we will install AGM, i.e., Angular Google Maps using the below command.

npm install @agm/core
npm i @types/googlemaps@3.39.13

@NgModule Set-Up

You will need a Google Maps API key from here in order to access the map in your project. Open src/app/app.module.ts and import the AgmCoreModule.

import { NgModule } from '@angular/core';
import { AgmCoreModule } from '@agm/core';
import { BrowserModule } from '@angular/platform-browser';
 
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
 
@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    AppRoutingModule,
    AgmCoreModule.forRoot({
      apiKey: ''
    })
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

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Configure the App Component

Now, moving forward in Angular Google Maps tutorial to configure the app component. In the app component, we have added

markers array
set the zoom level
default latitude and longitude
click marker event

Open the file src/app/app.component.ts and modify as shown below:

import { Component } from '@angular/core';
@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent  {
  // google maps zoom level
  zoom: number = 8;
 
  // initial center position for the map
  lat: number = 51.673858;
  lng: number = 7.815982;
 
  clickedMarker(label: string, index: number) {
    console.log(`clicked the marker: ${label || index}`)
  }
 
  markers = [
      {
          lat: 51.673858,
          lng: 7.815982,
          label: "A",
          draggable: true
      },
      {
          lat: 51.373858,
          lng: 7.215982,
          label: "B",
          draggable: false
      },
      {
          lat: 51.723858,
          lng: 7.895982,
          label: "C",
          draggable: true
      }
  ]
}

User Interface

Open the file src/app/app.component.html and paste the following content:

<h2>Angular Google Maps (AGM) Demo</h2>
 
<agm-map
  [latitude]="lat"
  [longitude]="lng"
  [zoom]="zoom"
  [disableDefaultUI]="false"   >
 
  <agm-marker
      *ngFor="let m of markers; let i = index"
      (markerClick)="clickedMarker(m.label, i)"
      [latitude]="m.lat"
      [longitude]="m.lng"
      [label]="m.label"
      [markerDraggable]="m.draggable">
     
    <agm-info-window>
      <strong>Label: {{m.label}}</strong><br/>
      <strong>Latitude: {{m.lat}}</strong><br/>
      <strong>Longitude: {{m.lng}}</strong>
    </agm-info-window>
   
  </agm-marker>
 
</agm-map>

Open the file src/app/app.component.css and paste the following code.

agm-map {
    height: 500px;
}

Run the Application

Use the below command in the project root folder to run the application.

npm start

Then, open the following URL in your browser: http://localhost:4200

You should see your first Google Map created with Angular Google Maps when everything works as expected, as shown below.

Github Repository: Angular Google Maps

Feel free to visit the source code: angular-google-maps. You can clone the github repository and experiment with the code by yourself.

Conclusion

So, this was how to integrate Angular Google Maps in your project. I hope the tutorial was helpful to get started with AGM. You can always share your suggestions or feedback with us. Visit the Angular tutorials page to learn fundamental and advanced Angular knowledge for more such tutorials. Every tutorial will provide a github repository so that you can clone and play around with the code. Bacancy has skilled and experienced Angular developers with the best problem-solving skills. Contact us if you have any queries or requirements.