如何修复无法解析符号'WriterException'

Question

I am new in android development and, I am following a QR code generator application tutorial using java, the developer in that tutorial throws a WriterException, while I am trying to do the same I face this error (cannot resolve symbol 'WriterException' ). I'm using this library https://github.com/androidmads/QRGenerator

    genebtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            String data = qrvalue.getText().toString();
            QRGEncoder qrgEncoder= new QRGEncoder(data,null, QRGContents.Type.TEXT,500);
            try {
                // Getting QR-Code as Bitmap
               Bitmap bitmap = qrgEncoder.getBitmap();
                // Setting Bitmap to ImageView
                qrimage.setImageBitmap(bitmap);
            } catch (WriterException e) {
                e.printStackTrace();

Answer 1

Set your mouse cursor on this error and click alt+enter to import class.This error existed because maybe import havn't been declared