[BUG] just black screen , no camera view is visible?

[harryandroiddev]

after uddating to new version it does not show the camera screen just show the black screen , earlier it was working fine.

[wutsi]

Im having the same problem

[edsulaiman]

workaround for this issue is by pausing and then resuming the camera

void onQRViewCreated(QRViewController controller) {
    qrController = controller;
    qrController.scannedDataStream.listen(onScanned);

    qrController.pauseCamera();
    qrController.resumeCamera();
  }

[lockiechen]

same problem

[lockiechen]

workaround for this issue is by pausing and then resuming the camera

void onQRViewCreated(QRViewController controller) {
    qrController = controller;
    qrController.scannedDataStream.listen(onScanned);

    qrController.pauseCamera();
    qrController.resumeCamera();
  }

with your solution, only debug mode can scan qrcode

[hamidjalili59]

workaround for this issue is by pausing and then resuming the camera

void onQRViewCreated(QRViewController controller) {
    qrController = controller;
    qrController.scannedDataStream.listen(onScanned);

    qrController.pauseCamera();
    qrController.resumeCamera();
  }

Thanks for the correct answer

[dhanrajVerma]

Facing exactly same issue with log W/Gralloc3(23725): allocator 3.x is not supported

[Dileep2896]

workaround for this issue is by pausing and then resuming the camera

void onQRViewCreated(QRViewController controller) {
    qrController = controller;
    qrController.scannedDataStream.listen(onScanned);

    qrController.pauseCamera();
    qrController.resumeCamera();
  }

But not able to get the scanned results!!! :(

[FlorinAdrianLaudat]

Same for me (device One Nord Plus) - used the library example. My workaround was to use a resumeCamera outside of the listen.
_onQRViewCreated(QRViewController controller) { _qrController = controller; _qrController.resumeCamera(); controller.scannedDataStream.listen((scanData) {

[abs0]

Just another confirmation that on Android adding controller.resumeCamera() before listen in _onQRViewCreated(QRViewController controller) fixed the issue

[jt274]

Same issue. Strangely, if I tap the camera view then it loads.

[NAME-NikhilPatil]

Thank you

[ne3Vubeki]

Better wrap everything in if:

if (Platform.isAndroid) { this.controller?.resumeCamera(); }

Otherwise, on iOS there will be errors:

CameraException(404, No barcode scanner found)

[chituanh]

workaround for this issue is by pausing and then resuming the camera

void onQRViewCreated(QRViewController controller) {
    qrController = controller;
    qrController.scannedDataStream.listen(onScanned);

    qrController.pauseCamera();
    qrController.resumeCamera();
  }

I tried. and it only works when running debug and when reselase, the application is cracked