Swift : No Matter what I do CIDetector is always nil

Question

i don\'t understand why this code doesn\'t work, the detector is always nil with the CIDetectorTypeQRCode constant, everything work with CIDetectorTypeFace. I Supect a bug f

Answer 1

1. Make sure your ImgChoosed.image is not nil.
2. Change another input image for testing.
3. Try for feature in features as! [CIQRCodeFeature].