Cordova条形码扫描仪无法在Android 6.0.1上运行

Question

我在Ionic 3.19上设置BarcodeScanner时遇到了一些问题。到目前为止这是我的代码。测试设备是运行Android 6.0.1的LG Nexus 5。我正在运行Cordova 7.0.1。

以下实现在浏览器中按预期工作，但在电话上，它只是告诉我“授予权限”，然后条形码扫描器的相机不会出现。

存款money.ts

import { Component } from '@angular/core';
import { ModalController } from 'ionic-angular';
import { BarcodeScanner, BarcodeScannerOptions } from '@ionic-native/barcode-scanner';
import { AndroidPermissions  } from '@ionic-native/android-permissions';

import { ScanQRCodeModal } from '../scan-qr-code/scan-qr-code';

@Component({
  selector: 'page-deposit',
  templateUrl: 'deposit-money.html'
})
export class DepositMoneyPage {

  options: BarcodeScannerOptions;
  scanData: {};

  constructor(private barcodeScanner: BarcodeScanner, 
              private androidPermissions: AndroidPermissions,
              private modalCtrl: ModalController) {

  }

  checkCameraPermissions() {
    this.androidPermissions.checkPermission(this.androidPermissions.PERMISSION.CAMERA).then(
      success => { alert('Permission granted'); this.scanQRCode()},
      err => { alert('asking for permisison'); this.androidPermissions.requestPermission(this.androidPermissions.PERMISSION.CAMERA) }
    );
  }

  scanQRCode() {
    this.options = {
      prompt : "Scan your voucher code"
    }
    this.barcodeScanner.scan(this.options).then((barcodeData) => {
      console.log(barcodeData);
      this.scanData = barcodeData;
    }, (err) => {
      console.log("Error occured: " + err);
    }); 
  }

  showScanQRCodeModal() {
    let scanQRCodeModal = this.modalCtrl.create(ScanQRCodeModal);
    scanQRCodeModal.present();   
  }
}

存款money.html

<ion-header>
    <ion-navbar>
        <ion-title>
            Deposit Money
        </ion-title>
    </ion-navbar>
</ion-header>

<ion-content>
    <ion-list>
        <button ion-item (click)="checkCameraPermissions()">Scan QR Code</button>
    </ion-list>

    <div *ngIf="scanData">
        <p>Scanned Text:  {{scanData.text}}</p>
        <p>Scanned Format: {{scanData.format}}</p>
    </div>
</ion-content>

Answer 1

试试这个插件

<plugin spec="https://github.com/Telerik-Verified-Plugins/BarcodeScanner.git" source="git" >
    <param name="CAMERA_USAGE_DESCRIPTION" value="To scan barcodes." />
    </plugin>