ReferenceError:未定义元素-cordova-plugin-googlemaps

时间:2018-07-17 09:56:56

标签: javascript angular ionic-framework google-maps-api-3 cordova-plugins

我正在研究Ionic 3项目,并且为了实现与地图相关的功能,我选择了Ionic Team建议的Google Maps插件。 Google Maps Ionic插件基本上是cordova-plugin-googlemaps的包装。我已经遵循了presentation中提到的步骤。

我无法在ID为map_canvas的元素中显示地图,该元素位于页面html之一中。到目前为止,这是我尝试过的:

import { Component } from '@angular/core';
import { IonicPage, NavController, NavParams } from 'ionic-angular';
import { FormBuilder, FormGroup, Validators } from '@angular/forms';
import { GoogleMaps, GoogleMap, Marker } from '@ionic-native/google-maps';


@IonicPage()
@Component({
  selector: 'page-step-two',
  templateUrl: 'step-two.html',
})
export class StepTwoPage {

  private stepTwoForm: FormGroup;
  private map: GoogleMap;

  constructor(private formBuilder: FormBuilder) {
    this.stepTwoForm = this.formBuilder.group({
      prename: ['', Validators.required],
      name: ['', Validators.required],
      email: ['', Validators.required],
      mobile: ['', Validators.required],
      yearLiving: ['', Validators.required],
    });
  }

  ionViewDidLoad() {
    // Create a map after the view is ready 
    // and the native platform is ready.
    this.loadMap();
  }

  loadMap() {
    this.map = GoogleMaps.create('map_canvas'); // <--- Problematic statement
  }

  goToStepThree() {

  }

}

这是html页:

<ion-header>
  <ion-navbar>
    <ion-title>Step - 2</ion-title>
  </ion-navbar>
</ion-header>

<ion-content padding>
  <progress-bar [stepCount]="5" [currentStep]="2"></progress-bar>

  <ion-card class="step-body-card">
    <ion-card-header>
      <h1 text-center class="card-title">Persona</h1>
    </ion-card-header>
    <ion-card-content>
      <form [formGroup]="stepTwoForm" (ngSubmit)="goToStepThree()">
        <ion-grid>
          <ion-row>
            <ion-col col-12 col-sm>
              <ion-item>
                <ion-input type="text" placeholder="Prename" formControlName="prename"></ion-input>
              </ion-item>
            </ion-col>
            <ion-col col-12 col-sm>
              <ion-item>
                <ion-input type="text" placeholder="Name" formControlName="name"></ion-input>
              </ion-item>
            </ion-col>
          </ion-row>
          <ion-row>
            <ion-col col-12 col-sm>
              <ion-item>
                <ion-input type="email" placeholder="Email" formControlName="email"></ion-input>
              </ion-item>
            </ion-col>
            <ion-col col-12 col-sm>
              <ion-item>
                <ion-input type="tel" placeholder="Mobile" formControlName="mobile"></ion-input>
              </ion-item>
            </ion-col>
          </ion-row>
          <ion-row>
            <ion-col col-12 col-sm>
              <ion-item>
                <ion-input type="number" min="0" placeholder="Year of living" formControlName="yearLiving"></ion-input>
              </ion-item>
            </ion-col>
            <ion-col col-12 col-sm>

            </ion-col>
          </ion-row>
        </ion-grid>
        <button margin-top ion-button type="submit" [disabled]="!stepTwoForm.valid">Continue</button>
      </form>
    </ion-card-content>
  </ion-card>
</ion-content>

我尝试在Android上运行,但它给出了一个错误,没有在map_canvas元素上显示任何内容。该错误是由cordova产生的:

Error in Success callbackId: CordovaGoogleMaps1188158820 : ReferenceError: element is not defined

这是控制台的堆栈跟踪:

Uncaught ReferenceError: element is not defined
    at Map.<anonymous> (:8100/plugins/cordova-plugin-googlemaps/www/CordovaGoogleMaps.js:645)
    at Map.trigger (:8100/plugins/cordova-plugin-googlemaps/www/BaseClass.js:68)
    at Map.set (:8100/plugins/cordova-plugin-googlemaps/www/BaseClass.js:35)
    at Map.getMap (:8100/plugins/cordova-plugin-googlemaps/www/Map.js:152)
    at :8100/plugins/cordova-plugin-googlemaps/www/CordovaGoogleMaps.js:881
    at Object.callbackFromNative (cordova.js:291)
    at <anonymous>:1:9

我可以确认此错误是在初始化或创建映射时由语句产生的,在page.ts中指出为问题语句。我无法获得此错误的根本问题。

请帮助我对问题进行故障排除并提出修复建议。

编辑
调试后,我发现错误仅在map_canvas元素(div)位于form内时发生,如果我从form标记中取出,它会按预期工作并映射节目。

FormBuilder可能是一个错误或出了点问题。我需要在表单中显示Google Map,因此请帮助我修复Google Map插件的这种奇怪行为。已编辑的问题,包括完整的表格供参考,并简化了地图创建逻辑。

1 个答案:

答案 0 :(得分:1)

更新

构建共享项目后,我无法重现错误enter image description here

问题至少已经在v2.3.8中消失了