How to make UIImageView automatically resize to the size of the image loaded

Question

I have put an UIImageView control on my view with IB. The size of the control is just something I decided upon, pretty random size really What I want to do is the control to

Answer 1

Here is the code snippet I cut and paste often, using the same method as Hampus Nilsson above -

Example

func demo(x0:CGFloat, y0:CGFloat) {
    let imgView = UIImageView(image: UIImage(named: "someImg.png"));
    imgView.sizeToImage();
    imgView.center = CGPoint(x:x0, y:y0);
}

UIImageView Extension

extension UIImageView {

/******************************************************************************/
/** @fcn        sizeToImage()
 *  @brief      size view to image
 *  @@assum     (image!=nil)
 */
/******************************************************************************/
func sizeToImage() {

    //Grab loc
    let xC = self.center.x;
    let yC = self.center.y;

    //Size to fit
    self.frame  = CGRect (x: 0, y: 0, width: (self.image?.size.width)!/2, height: (self.image?.size.height)!/2);

    //Move to loc
    self.center = CGPoint(x:xC, y:yC);

    return;
}

A wonderful cut & paste, use if needed!