Ionic 2 Cordova网络信息插件参考错误

Question

我已根据本教程将网络信息插件安装到我的Ionic 2应用程序中:

离子2 | 如何使用Cordova插件

但是,TypeScript无法编译,因为它无法在状态数组行中找到"连接"的引用.知道如何根据Platform,Page等为它编写import语句吗？

我的课:

import {NavController, NavParams} from 'ionic-framework/ionic';
import {Page, ViewController, Platform, Alert, Modal, Events} from 'ionic-framework/ionic';
import {forwardRef} from 'angular2/core';
import {OnInit} from 'angular2/core';
import {Injectable} from 'angular2/core';
import {TodosService} from '../../services/TodosService';
import {MyTodosItem} from '../../pages/my-todos-item/my-todos-item';

@Page({
  templateUrl: 'build/pages/my-todos/my-todos.html'
})
class TodayPage {

  constructor(
    private platform: Platform,
    private nav: NavController,
    private _events: Events,
    private _todosService: TodosService) {
    this._platform = platform;
    this._isAndroid = platform.is('android');
  }

  ngOnInit() {
    this.getItems();
    this._events.subscribe('item:updated', () => {
      this.getItems();
    });

    this.checkNetwork();
  }

  checkNetwork() {
      this._platform.ready().then(() => {
          var networkState = navigator.connection.type;

          var states = {};
          states[Connection.UNKNOWN]  = 'Unknown connection';
          states[Connection.ETHERNET] = 'Ethernet connection';
          states[Connection.WIFI]     = 'WiFi connection';
          states[Connection.CELL_2G]  = 'Cell 2G connection';
          states[Connection.CELL_3G]  = 'Cell 3G connection';
          states[Connection.CELL_4G]  = 'Cell 4G connection';
          states[Connection.CELL]     = 'Cell generic connection';
          states[Connection.NONE]     = 'No network connection';

          alert(states[networkState]);
      });
  }
.. 
}

错误是:
找不到名称'连接'.

Answer 1

注意:插件不一定/始终在浏览器中工作,因此使用真实设备或模拟器.

要修复TypeScript错误:

1. 在/ app中创建一个名为Typings的文件夹
2. 将此文件下载到该文件夹​​:phonegaptypings here

3. 使用以下代码在文件夹中创建另一个文件,例如ngcordova.d.ts:

   界面窗口{plugins:any; }

然后修改你的tsconfig.json files属性:

  "files": [
    "app/app.ts",
    "app/typings/ngcordova.d.ts",
    "app/typings/phonegap.d.ts"
  ]

现在,TypeScript不应该抱怨,它将构建但重要的是:在REAL设备或模拟器上测试,而不是浏览器.

这对我有用.