How can I put a QR-code in an alert dialog?

Question

I am trying to put a QR-code in an alert box. I am creating a QR code using zxing library so, the QR will first be generated as a bitmap. Here my problem is I can only set it as an icon but can't find a proper way to set as an image.

Here is what I have tried:

 btn.setOnClickListener(new View.OnClickListener() {
        Drawable d;

        @Override
        public void onClick(View v) {
            AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
            String text = et.getText().toString();
            MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
            try {
                BitMatrix bitMatrix = multiFormatWriter.encode(text, BarcodeFormat.QR_CODE, 200, 200);
                qr = bitMatrix.hashCode();
                BarcodeEncoder barcodeEncoder = new BarcodeEncoder();
                final Bitmap bitmap = barcodeEncoder.createBitmap(bitMatrix);
                bit = bitmap;
                d = new BitmapDrawable(getResources(), bit);
                iv.setImageBitmap(bitmap);
                builder.setTitle("hi");
                builder.setIcon(d);
                builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        Toast.makeText(getApplicationContext(), "Yes button Clicked", Toast.LENGTH_LONG).show();
                        Log.i("Code2care ", "Yes button Clicked!");
                        dialog.dismiss();
                    }
                });
                builder.setView(iv).create().show();
                //builder.show();
            } catch (WriterException e) {
                e.printStackTrace();
            }
        }
    });

So I am getting a

java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first"

at builder.setView(iv).create().show();

When I use a solution found in web i.e. to add a image view to the dialog.

Any help will be useful, thanks in advance.

Answer 1

The error log is pretty clear, the iv view was already added to another ViewGroup. To solve it, you should create a new ImageView instance instead of using iv.