CODEWITHSUNDEEP
angulargoogle-mapscordovaionic3
md-5h04I3
md-5h04I3

Reputation: 214

Google native map not working in ionic 3

I have followed Google native maps for ionic 3 but came across a typo

ERROR Error: Uncaught (in promise): TypeError: Cannot read property 'BaseArrayClass' of null

Searched a lot on above error but could not find relevant answers. I am using *Angular4 with ionic 3 *.

app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { ErrorHandler, NgModule } from '@angular/core';
import { IonicApp, IonicErrorHandler, IonicModule } from 'ionic-angular';

import { MyApp } from './app.component';
import { HomePage } from '../pages/home/home';
import { ListPage } from '../pages/list/list';

import { StatusBar } from '@ionic-native/status-bar';
import { SplashScreen } from '@ionic-native/splash-screen';


import {GoogleMaps} from '@ionic-native/google-maps';
@NgModule({
  declarations: [
    MyApp,
    HomePage,
    ListPage
  ],
  imports: [
    BrowserModule,
    IonicModule.forRoot(MyApp),
  ],
  bootstrap: [IonicApp],
  entryComponents: [
    MyApp,
    HomePage,
    ListPage
  ],
  providers: [
    StatusBar,
    SplashScreen,
    GoogleMaps,
    {provide: ErrorHandler, useClass: IonicErrorHandler}
  ]
})
export class AppModule {}

home.html

<ion-header>
    <ion-navbar>
        <button ion-button menuToggle>
      <ion-icon name="menu"></ion-icon>
    </button>
        <ion-title>Google Maps</ion-title>
    </ion-navbar>
</ion-header>

<ion-content padding>
    <div id="map"></div>
</ion-content>

home.ts

import {
  GoogleMaps,
  GoogleMap,
  GoogleMapsEvent,
  GoogleMapOptions,
  LatLng,
  CameraPosition,
  MarkerOptions,
  Marker
} from '@ionic-native/google-maps';
import {
  Component
} from '@angular/core';
import {
  Platform,
  NavController
} from 'ionic-angular';

@Component({
  selector: 'page-home',
  templateUrl: 'home.html'
})
export class HomePage {
  map: GoogleMap;
  mapElement: HTMLElement;
  constructor(public navCtrl: NavController, private googleMaps: GoogleMaps, public platform: Platform) {
    // Wait the native plugin is ready.
    platform.ready().then(() => {
      this.loadMap();
    });
  }
  ionViewDidLoad() {
    this.loadMap();
  }

  loadMap() {
    this.mapElement = document.getElementById('map');

    let mapOptions: GoogleMapOptions = {
      camera: {
        target: {
          lat: 43.0741904,
          lng: -89.3809802
        },
        zoom: 18,
        tilt: 30
      }
    };

    this.map = this.googleMaps.create(this.mapElement, mapOptions);

    // Wait the MAP_READY before using any methods.
    this.map.one(GoogleMapsEvent.MAP_READY)
      .then(() => {
        console.log('Map is ready!');

        // Now you can use all methods safely.
        this.map.addMarker({
            title: 'Ionic',
            icon: 'blue',
            animation: 'DROP',
            position: {
              lat: 43.0741904,
              lng: -89.3809802
            }
          })
          .then(marker => {
            marker.on(GoogleMapsEvent.MARKER_CLICK)
              .subscribe(() => {
                alert('clicked');
              });
          });

      });
  }
}

Added a error screenshot

enter image description here

Upvotes: 3

Views: 2571

Answers (1)

Marcelo Rafael
Marcelo Rafael

Reputation: 62

I have the same problem in my application. I don't know if this is the best shape but for me resolve for now. (sorry, my english is not very good rsrs).

So try change this:

this.googleMaps.create(this.mapElement, mapOptions);

For this:

this.map = new GoogleMap(this.mapElement, mapOptions);

EDITED
I found a new solution for the problem. You need do downgrade the version of the @ionic-native/google-maps in package.json and execute npm update command.

Its possible that problem occours because a bug in the new version. The version that I use in my project is 4.2.1

Upvotes: 4

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