Scan never ends

If I use scanPath or scanBytes to scan an image, and the image doesn’t have a barcode, the code keeps waiting instead of returning null or throwing an exception or anything like it.

For example:

String path = '/path/to/my/image.jpg';
print('scanning barcode...');
String barcode = await scanner.scanPath(path);
print('done');

Will print “done” only if the image has a barcode. If not, “done” will never get executed and the code will keep on waiting to scanner.scanPath to finish. No exceptions are thrown.

• Tested on an Android device

[lucaslannes]

Folks, i made a pull request to allow catching this error. Check this out #92 😃

[HTMHell]

I got the same problem, you figured it out?

Not really. As a workaround you can set timeout for the future method:

String barcode = await scanner
        .scanPath(path)
        .timeout(Duration(seconds: 2));

and you should catch the timeout exception, or pass onTimeout argument to timeout method.