ionic-framework - Ionic 3 Google map 在 Android + IOS 上不显示

Question

我使用 Ionic 3 版本，并尝试在我的应用程序中添加一个页面，以显示带有标记的 map 。 我已经在我的应用程序中使用了用于自动完成的 Google map ID(Google 地点...)。 我访问了 Google API，并将 map 嵌入、Javascript 等添加到了我的 API key 中。 但页面底部显示“Google”和“显示按钮”，但 map 是空的。 请参阅附件...

安装 Cordova 和 Ionic Native 插件:

$ ionic cordova 插件添加 https://github.com/mapsplugin/cordova-plugin-googlemaps#multiple_maps --变量 API_KEY_FOR_ANDROID="AIzaSyB6mEnxH4vC++++++++++9wnXXNNmK2co"--变量 API_KEY_FOR_IOS="AIzaSyB6mEnxH4v++++++++++++++wnXXNNmK2co" $ npm install --save @ionic-native/google-maps

Home.ts:

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

@Component({
  selector: 'page-home',
  templateUrl: 'home.html'
})

export class HomePage {

  @ViewChild('map') mapElement: ElementRef;
  map: any;
  constructor(public navCtrl: NavController, private googleMaps: GoogleMaps) {

  }
  ngAfterViewInit() {
 this.loadMap();
}

loadMap() {
 // make sure to create following structure in your view.html file
 // and add a height (for example 100%) to it, else the map won't be visible
 // <ion-content>
 //  <div #map id="map" style="height:100%;"></div>
 // </ion-content>

 // create a new map by passing HTMLElement
 let element: HTMLElement = document.getElementById('map');

 let map: GoogleMap = this.googleMaps.create(element);

 // listen to MAP_READY event
 // You must wait for this event to fire before adding something to the map or modifying it in anyway
 map.one(GoogleMapsEvent.MAP_READY).then(
   () => {
     console.log('Map is ready!');
     // Now you can add elements to the map like the marker
   }
 );

 // create CameraPosition
 let position: CameraPosition = {
   target: {
     lat: 43.0741904,
     lng: -89.3809802
   },
   zoom: 18,
   tilt: 30
 };

 // move the map's camera to position
} 
}

首页.HTML

Home.html :
<ion-header>
  <ion-navbar>
    <ion-title>
      Map
    </ion-title>
    <ion-buttons end>
      <button ion-button (click)="addMarker()"><ion-icon name="add"></ion-icon>Add Marker</button>
    </ion-buttons>  
  </ion-navbar>
</ion-header>
 
<ion-content>
<div #map id="map" style="height:100%;"></div> 
</ion-content>

首页.scss

page-home {

}

Answer 1

不要使用ngAfterViewInit。 您必须等待platform.ready()

// Wait the native plugin is ready.
platform.ready().then(() => {
  this.loadMap();
});

完整代码是https://github.com/mapsplugin/cordova-plugin-googlemaps-doc/blob/master/v2.0.0/ionic-native/README.md

仓库:https://github.com/mapsplugin/ionic-google-maps

---

当前官方文档页面有误。我发送了拉取请求，但现在正在等待。 https://github.com/ionic-team/ionic-native/pull/1834