使用ionic2开发一个二维码扫描功能

import { Component } from ‘@angular/core‘;
import { NavController } from ‘ionic-angular‘;
import { BarcodeScanner } from "ionic-native";

@Component({
  selector: ‘page-home‘,
  templateUrl: ‘home.html‘
})
export class HomePage {
public scannedText: string;
  constructor(public navCtrl: NavController) {

  }
  public scanQR() {

    BarcodeScanner.scan().then((barcodeData) => {
      if (barcodeData.cancelled) {
        console.log("User cancelled the action!");
        return false;
      }
      console.log("Scanned successfully!");
      console.log(barcodeData);
      this.scannedText=JSON.stringify(barcodeData);
    }, (err) => {
      console.log(err);
    });
  }
}