打字稿错误：找不到名字’cordova’

概述import {Component} from '@angular/core';import {NavController, Platform, AlertController} from 'ionic-angular';import {Transfer, TransferObject} from '@ionic-native/transfer';import {File} from '@i

import {Component} from '@angular/core';import {NavController,Platform,AlertController} from 'ionic-angular';import {Transfer,TransferObject} from '@ionic-native/transfer';import {file} from '@ionic-native/file';@Component({  selector: 'page-about',templateUrl: 'about.HTML',provIDers: [Transfer,TransferObject,file]})export class AboutPage {  storageDirectory: string = '';  constructor(public navCtrl: NavController,public platform: Platform,private transfer: Transfer,private file: file,public alertCtrl: AlertController) {    this.platform.ready().then(() => {      // make sure this is on a device,not an emulation (e.g. Chrome tools device mode)      if(!this.platform.is('cordova')) {        return false;      }      if (this.platform.is('ios')) {        this.storageDirectory = cordova.file.documentsDirectory;      }      else if(this.platform.is('androID')) {        this.storageDirectory = cordova.file.externalDataDirectory;		console.log(this.storageDirectory);      }      else {        // exit otherwise,but you Could add further types here e.g. windows        return false;      }    });  }     downloadImage() {    this.platform.ready().then(() => {      const fileTransfer: TransferObject = this.transfer.create();      const imageLocation = 'http://HTML5demos.com/assets/dizzy.mp4';      fileTransfer.download(imageLocation,this.storageDirectory + 'dizzy.mp4').then((entry) => {       	   const alertSuccess = this.alertCtrl.create({          Title: `Download Succeeded!`,subTitle: `successfully downloaded to: ${entry.toURL()}`,buttons: ['Ok']        });        alertSuccess.present();      },(error) => {        const alertFailure = this.alertCtrl.create({          Title: `Download Failed!`,subTitle: `was not downloaded. Error code: ${error}`,buttons: ['Ok']        });        alertFailure.present();      });    });  }}

I am getting the error attached in screenshot.我在离子2中运行我的项目构建时遇到错误,虽然我已经使用下面的命令安装了’tyPings’

npm install -g tyPings tyPings,安装dt~cordova –save –global

并尝试了每种可能的方法来删除此错误,检查所有cordova插件,如文件,文件传输但仍然错误无法解决.

任何人都可以寻找它.

这里附有代码,我也不知道我哪里出错了..

解决方法 我编辑了你的代码,添加了declare let cordova：any;这暴露了cordova API以供使用.希望这有帮助.

import {Component} from '@angular/core';import {NavController,TransferObject} from '@ionic-native/transfer';import {file} from '@ionic-native/file';declare let cordova: any;@Component({  selector: 'page-about',buttons: ['Ok']        });        alertFailure.present();      });    });  }}

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