How to stop an image from stretching within a UIImageView?

Question

I have a UIImageView where I have set the frame size to x = 0, y = 0, width = 404, height = 712. In my project, I need to change the image in

Answer 1

You can use

self.imageView.contentMode = UIViewContentModeScaleAspectFit;

Swift 3:

imageView.contentMode = .scaleAspectFit

Or UIViewContentModeCenter / .center, or any of the other modes described in the UIView documentation.