@sankar82 wrote:
Hi,
I’m developing ionic3 angular corodova app, where I need to use a barcode scanner. When I use scanner first time its working fine, when I try to scan next time, its throwing Java error -
Java exception was raised during method invocationFollowing is my code
app.module.ts
import { BarcodeScanner } from '@ionic-native/barcode-scanner'; providers: [ StatusBar, SplashScreen, AndroidPermissions, BarcodeScanner, {provide: ErrorHandler, useClass: IonicErrorHandler} ]
shoppingcart.ts
import { BarcodeScanner } from '@ionic-native/barcode-scanner'; import { AndroidPermissions } from '@ionic-native/android-permissions'; constructor(private barcodeScanner: BarcodeScanner, public androidPermissions: AndroidPermissions) public checkPermission(){ this.androidPermissions.checkPermission(this.androidPermissions.PERMISSION.CAMERA) .then(status => { if (status.hasPermission) { this.scanProduct(); } else { this.androidPermissions.requestPermission(this.androidPermissions.PERMISSION.CAMERA) .then(status =>{ if(status.hasPermission) this.scanProduct(); }); } }) } public scanProduct(){ this.barcodeScanner.scan().then(barcodeData => { console.log('Barcode data', barcodeData); if(!barcodeData.cancelled){ var partNo = barcodeData.text; if(partNo.length > 7){ partNo = partNo.split('')[1].substr(2, 9); } this.productDetails(partNo) }else{ alert("Scan Cancelled"); } }).catch(err => { console.log('Error', err); }), { prompt : "Scan QR code on Applied Biosystems reagent box"//, }; } public productDetails(id: any){ this.navCtrl.push(ProductDetailsPage, {id: id}); }
Finally I will show the identifeid product in a iframe.
Please help me, someone, what mistake I am doing in my code.
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