Unexpected token error when using ionic/cordova

Question

I am following trying to set up a barcode scanner using the following - https://ionicframework.com/docs/native/barcode-scanner/

This is my code -

import { Component } from '@angular/core';
import { NavController } from 'ionic-angular';
import { BarcodeScanner } from '@ionic-native/barcode-scanner';
@Component({
selector: 'page-home',
templateUrl: 'home.html'
})
export class HomePage {

constructor(private barcodeScanner: BarcodeScanner) { 

}

this.barcodeScanner.scan().then((barcodeData) => {

console.log(barcodeData);

}, (err) => {

});
}

When I run it, I get an error saying

Typescript Error
Unexpected token. A constructor, method, accessor, or property was expected.

I am not sure what is causing this error, as I have followed the code given.

Sajeetharan · Accepted Answer · 2018-01-14 17:55:49Z

1

You need to place the code inside a constructor or a function.

ScanCode() : any{
    this.barcodeScanner.scan().then((barcodeData) => {
    console.log(barcodeData);
    }, (err) => {
    });
}

answered Jan 14, 2018 at 17:55

Sajeetharan

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7 Comments

sunnyj58 Over a year ago

Ah thank you. The errors are gone, but now when I run the code nothing happens. I set a button up in the view - <button ion-button (click)="ScanCode()">Scan Barcode</button> When I click on the button, nothing happens. Nothing runs etc. Any ideas?

Sajeetharan Over a year ago

you need to call the function ScanCode() from your template wherever its needed. mark if the answer helped

sunnyj58 Over a year ago

I think you replied before my edit. I tried that, no errors now. But nothing happens, camera doesnt open etc

Sajeetharan Over a year ago

you need to add a debugger and see what happens

sunnyj58 Over a year ago

Is this where I need to use an emulator? I have had so many issues. Ive installed android studio, but AVD hasnt installed. Ive tried uninstalling and reinstalling but no success. When I run - ionic cordova emulate android I get an error telling me to run appdata\local\android\sdk\tools\android.bat to create AVDs, but I click this and a console window flicks on and off

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