问离子2 Cordova网络信息插件参考误差

EN

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]);
      });
  }
.. 
}