IOS: create a UIImage or UIImageView with rounded corners

Question

Is it possible create an UIImage or an UIImageView with rounded corners? Because I want take an UIImage and show it inside an UI

Answer 1

Objective-C

-(UIImage *)makeRoundedImage:(UIImage *) image 
                      radius: (float) radius;
{
  CALayer *imageLayer = [CALayer layer];
  imageLayer.frame = CGRectMake(0, 0, image.size.width, image.size.height);
  imageLayer.contents = (id) image.CGImage;

  imageLayer.masksToBounds = YES;
  imageLayer.cornerRadius = radius;

  UIGraphicsBeginImageContext(image.size);
  [imageLayer renderInContext:UIGraphicsGetCurrentContext()];
  UIImage *roundedImage = UIGraphicsGetImageFromCurrentImageContext();
  UIGraphicsEndImageContext();

  return roundedImage;
}

Swift 3

func makeRoundedImage(image: UIImage, radius: Float) -> UIImage {
    var imageLayer = CALayer()
    imageLayer.frame = CGRect(x: 0, y: 0, width: image.size.width, height: image.size.height)
    imageLayer.contents = image.cgImage

    imageLayer.masksToBounds = true
    imageLayer.cornerRadius = radius

    UIGraphicsBeginImageContext(image.size)
    imageLayer.render(in: UIGraphicsGetCurrentContext())
    var roundedImage = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()

    return roundedImage
}