CODEWITHSUNDEEP
iosswiftcore-image
dean
dean

Reputation: 331

UIImage appears to take up space beyond the bounds of its UIImageView?

I have an application where by I take a picture and then go on to present this image in a different UIViewController. However, the resulting UIImage appears to expand beyond the bounds at which I set the UIImageView. The content mode is 'Aspect fill'

After taking the picture, the following method is called: CaptureImageViewController:

func presentCapturedImage(image: CGImage, observationObj: VNRectangleObservation) -> Void {
    print("HERE!")

    let prevVC  = storyboard?.instantiateViewController(withIdentifier: "prevcrop") as! PreviewCropViewController
    prevVC.cgImg = image
    prevVC.uiImageEXIF = uiImageEXIF
    prevVC.ObserObj = observationObj

    DispatchQueue.main.async {
        self.present(prevVC, animated: true, completion: nil)
    }
}

PresentingViewController calls the following in its viewDidLoad():

@IBOutlet weak var imgPreViewOutlet: UIImageView!


guard
        let img = self.cgImg,
        let imgEXIF = self.uiImageEXIF else{return}

    let uiImage = UIImage.init(cgImage: img)

    self.imgPreViewOutlet.image = uiImage

The UIViewController that I use to present the image:

enter image description here

The Constraints of the lower UIView holding the UIButton:

enter image description here

The constraints of the UIImageView:

enter image description here

The resulting view - you can see the image covers almostall of the crop button:

enter image description here

Upvotes: 1

Views: 1621

Answers (1)

JonJ
JonJ

Reputation: 1061

Beware when using aspectFill in UIImageViews. If clipsToBounds is not true, the image will probably extend outside the frame.

This happens as the image is scaled in such a way to fully fill the image view frame. If the proportions of the image and frame aren't exactly identical, the image will extend outside the frame.

Upvotes: 9

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