我使用以下代码从包含QR码的图库中获取图像。我面临的问题是在某些设备中检测到qr代码,而在其他设备中检测不到。 从它的外观来看,我诊断的是iOS 10.7及更低版本的设备没有检测到QR码,而从iOS 10.7更高版本,代码工作正常。 如何让它在iOS 10.7和更小的设备下运行。我没有找到任何帮助。如果任何机构有任何关于此的链接或解决方案,将不胜感激。提前致谢] 1 我还附上了必须扫描的图像。
使用的代码:
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
BOOL qrcodedetected = NO;
[picker dismissViewControllerAnimated:YES completion:NULL];
UIImage *chosenImage = info[UIImagePickerControllerOriginalImage];
// QRCode detector
NSDictionary *detectorOptions = @{ CIDetectorAccuracy : CIDetectorAccuracyHigh };
CIDetector *faceDetector = [CIDetector detectorOfType:CIDetectorTypeQRCode context:nil options:detectorOptions];
NSArray *features = [faceDetector featuresInImage:chosenImage.CIImage];
CIQRCodeFeature *faceFeature;
for(faceFeature in features)
{
qrcodedetected = YES;
self.decodedstr = [NSString stringWithFormat:@"%@",faceFeature.messageString];
break;
}
}