My solution is to change the image orientation metadata in the wrong cases:
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
[....]
UIImage *image = [info objectForKey: UIImagePickerControllerOriginalImage];
if(image){
// This fixes a bug in ZBarReader taking picture in landscape orientation and device in flat position.
NSLog(@"Image: %d, Device: %d",image.imageOrientation,self.interfaceOrientation);
UIImageOrientation imgOrientation = image.imageOrientation;
UIInterfaceOrientation interfaceOrientation = self.interfaceOrientation;
if(interfaceOrientation == UIInterfaceOrientationLandscapeLeft && imgOrientation == UIImageOrientationUp){
image = [UIImage imageWithCGImage:[image CGImage] scale:1.0 orientation:UIImageOrientationDown];
}else if(interfaceOrientation == UIInterfaceOrientationLandscapeRight && imgOrientation == UIImageOrientationDown){
image = [UIImage imageWithCGImage:[image CGImage] scale:1.0 orientation:UIImageOrientationUp];
}
[self hideScanner];
[self performSegueWithIdentifier:@"mySegue" sender:image];
}
}
}
}