How to scan QRCode in android

Question

I found a tutorial on how to scan a barcode. But in my application I have to scan a QR code. How can I a scan QR code in Android?

Answer 1

You can scan QR code easily with zxing add the following dependencies in your gradle

compile 'com.journeyapps:zxing-android-embedded:3.1.0@aar'
compile 'com.google.zxing:core:3.2.0'

Then in your Activity or on Fragment

   IntentIntegrator scanIntegrator = new IntentIntegrator(context);
                scanIntegrator.setPrompt("Scan");
                scanIntegrator.setBeepEnabled(true);
                //The following line if you want QR code
                scanIntegrator.setDesiredBarcodeFormats(IntentIntegrator.QR_CODE_TYPES);
                scanIntegrator.setCaptureActivity(CaptureActivityAnyOrientation.class);
                scanIntegrator.setOrientationLocked(true);
                scanIntegrator.setBarcodeImageEnabled(true);
                scanIntegrator.initiateScan();

And then capture the result in onActivityResult

   @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        IntentResult scanningResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
        if (scanningResult != null) {
            if (scanningResult.getContents() != null) {
                scanContent = scanningResult.getContents().toString();
                scanFormat = scanningResult.getFormatName().toString();
            }

            Toast.makeText(this,scanContent+"   type:"+scanFormat,Toast.LENGTH_SHORT).show();

        }else{
            Toast.makeText(this,"Nothing scanned",Toast.LENGTH_SHORT).show();
        }
    }

Take a look at this sample project , hope it helps you .