小编Ayu*_*ahu的帖子

我是 ionic 新手，所以我对 Ionic 框架不太了解，我正在尝试实现 Cordova-plugin-QR 扫描仪，但它在我的控制台上显示以下错误。

这是我的代码

import { Component, OnInit } from '@angular/core';
import { QRScanner, QRScannerStatus } from '@ionic-native/qr-scanner/ngx';

@Component({
  selector: 'app-notification',
  templateUrl: './notification.page.html',
  styleUrls: ['./notification.page.scss'],
})

export class NotificationPage implements OnInit {
    constructor(private qrScanner: QRScanner  ) {
    }

ngOnInit(){
  this.qrScanner.prepare()
  .then((status: QRScannerStatus) => {
     if (status.authorized) {
       // camera permission was granted


       // start scanning
       let scanSub = this.qrScanner.scan().subscribe((text: string) => {
         console.log('Scanned something', text);

         this.qrScanner.hide(); // hide camera preview
         scanSub.unsubscribe(); // stop scanning
       });

     } …