I have an image like this:
and I'd like to resize this image to a specific width: let's say 200px where the height should also get calculated. (So the image should keep its width-to-height scale)
This was all I get so far:
extension UIImage {
func resize(newSize1: CGSize) -> UIImage {
let size = self.size
let widthRatio = newSize1.width / size.width
let heightRatio = newSize1.height / size.height
var newSize2: CGSize
if(widthRatio > heightRatio) {
newSize2 = CGSize(width: size.width * heightRatio, height: size.height * heightRatio)
} else {
newSize2 = CGSize(width: size.width * widthRatio, height: size.height * widthRatio)
}
let rect = CGRect(x: 0, y: 0, width: newSize2.width, height: newSize2.height)
UIGraphicsBeginImageContextWithOptions(newSize2, false, 1.0)
self.draw(in: rect)
let newImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return newImage2!
}
}
But the function takes a CGSize
size parameter (width AND height) but I just want to get a function that takes the width parameter.
How to edit my code to solve my problem?
Any help would be very appreciated :)
Note: The UIImage should get a smaller resolution (less pixels), not the Image View itself!
Best Answer
For Swift 4 And Swift 3 use below
UIImage
extension for resizing image. It's calculated height according to given width.