javascript - 无法解析 Angular 2 中 MapsPage :(? ,NavController,LaunchNavigator,.......) 的所有参数

Question

所以我在我的移动应用程序中使用 Angular2 和 Ionic2。我的应用程序正在完美编译和运行，直到我向应用程序添加了一个新模块以在谷歌地图中进行导航。我正在使用phonegap-launch-navigator 来执行此操作。我导入模块的类是我的 Maps 类，该类的结构如下所示；

import { LaunchNavigator, LaunchNavigatorOptions} from 'ionic-native';
import { Component, NgZone } from "@angular/core";
import { NavController, Platform, NavParams } from 'ionic-angular';
import {GoogleMap, GoogleMapsEvent, GoogleMapsLatLng, GoogleMapsMarkerOptions, CameraPosition } from 'ionic-native';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/operator/map';
import { Geolocation } from 'ionic-native';
import { Injectable,forwardRef,Inject } from "@angular/core";


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

export class MapsPage {

  private map: GoogleMap;
  destination:string;
  start:string;

  constructor(public LaunchNavigatorOptions: LaunchNavigatorOptions,
    private _navController: NavController,
    private LaunchNavigator:LaunchNavigator,
    private platform: Platform,
    public navCtrl: NavController,
    public navParams: NavParams,
    private _zone: NgZone) {
    this.start = "";
    this.destination = "Westminster, London, UK";
    this.platform.ready().then(() => this.onPlatformReady());
  }

我的 package.json 看起来像这样

{
  "name": "ionic-hello-world",
  "author": "Ionic Framework",
  "homepage": "http://ionicframework.com/",
  "private": true,
  "scripts": {
    "clean": "ionic-app-scripts clean",
    "build": "ionic-app-scripts build",
    "ionic:build": "ionic-app-scripts build",
    "ionic:serve": "ionic-app-scripts serve",
    "test": "mocha"
  },
  "dependencies": {
    "@angular/common": "2.2.1",
    "@angular/compiler": "2.2.1",
    "@angular/compiler-cli": "2.2.1",
    "@angular/core": "2.2.1",
    "@angular/forms": "2.2.1",
    "@angular/http": "2.2.1",
    "@angular/platform-browser": "2.2.1",
    "@angular/platform-browser-dynamic": "2.2.1",
    "@angular/platform-server": "2.2.1",
    "@ionic/cloud-angular": "^0.11.0",
    "@ionic/storage": "1.1.7",
    "angular2-jwt": "^0.1.28",
    "bootstrap": "^3.3.7",
    "ionic-angular": "2.0.0-rc.4",
    "ionic-native": "2.2.11",
    "ionicons": "3.0.0",
    "jquery": "^3.1.1",
    "moment": "^2.17.1",
    "ng2-translate": "^5.0.0",
    "rxjs": "5.0.0-beta.12",
    "zone.js": "0.6.26"
  },
  "devDependencies": {
    "@ionic/app-scripts": "^1.0.0",
    "typescript": "2.0.9"
  },
  "cordovaPlugins": [
    "cordova-plugin-whitelist",
    "cordova-plugin-console",
    "cordova-plugin-statusbar",
    "cordova-plugin-device",
    "cordova-plugin-splashscreen",
    "ionic-plugin-keyboard"
  ],
  "cordovaPlatforms": [
    "ios",
    {
      "platform": "ios",
      "version": "",
      "locator": "ios"
    }
  ],
  "description": "myApp: An Ionic project"
}

导入这两个模块并将它们放入构造函数后，我什至无法启动我的应用程序，并且出现运行时错误，提示“无法解析 MapsPage(?,NavController,LaunchNavigator,Platform,NavController) 的所有参数，NavParams，NgZone)。我认为问题出在 LaunchNavigatorOptions 上，因为当我专门注释掉该选项时，应用程序能够再次运行而不会出现任何问题。我可以做些什么来使其工作吗？任何帮助都会受到赞赏。谢谢!

Answer 1

看起来您正在使用ionic-native v2.2.11。

在此版本中，插件是全局且静态的，不应注入(inject)到构造函数中。 只需删除

public LaunchNavigatorOptions: LaunchNavigatorOptions

和

private LaunchNavigator:LaunchNavigator,

来自你的构造函数。

检查docs用于升级到 ionic-native 3.x