Generated QRs are lack of black borders at three positional marks, make QR code unreadable.

Question

Generated QRs are lack of black borders at three positional marks, make QR code unreadable.

Opened this issue 2 years ago · 3 comments

Describe the bug
Generated QRs are lack of black band at three corners, make QR code unreadable.

To Reproduce

QrImage(
                backgroundColor: Colors.white,
                data: "http://www.github.com",
                version: QrVersions.auto,
                size: 320,
              )

Using it in iOS simulator.

Above image can not scan

Expected behavior
Should have black borders at three positional marks.

Answer 1 · 2022-10-30T19:46:17.000Z

Seems to be happening because of impeller.

Answer 2 · 2022-10-31T20:58:16.000Z

On further testing, it's only happening on Flutter master. Looks fine on stable and beta.

Answer 3 · 2022-11-07T16:24:49.000Z

Using flutter stable, I'm getting broken qr codes from time to time (web android mobile). The 3 squares in the 3 corners have strange right and bottom gaps.