如何使用自动布局调整固定宽度和高度的UIImageView的大小

Question

I have a view named myView which is always half the screen and sit at the top of screen.

Inside this view I added an UIImageView with 120x120 size which sits in center of the myView (horizontally and vertically). Inside the IB, to satisfy the constraints(X & Y) I always need to set a fixed width and height for my image, after I set center horizontally and center vertically.

But with a fixed height and width, the image doesn't resize when changing the screen size. I want my image to resize when running on iPhone5 or iPhone 4s, because myView will resize. I need something like the image should depend on the myView size.

How to actually achieve this ?

Answer 1

set imageView.clipToBounds = yes , and also set imageView.contentMode = UIViewContentModeScaleAspectFit;

Update You are talking about imageView not the image, in that case it will not resize due to constant width and height, do one thing, create IBoutLet of constraint and change there values when required, or you can also set Aspect ratio with superView

Answer 2

If you set the image with fixed width and height it will not change respectively. You can either set it to be relative to myView or you can instead set leading and trailing size from all for edges and delete the center constrains.

Answer 3

Your constraints should look like this:

Answer 4

For Swift 4: Updating answer of @Adnan Aftab

imageView.clipsToBounds = true
imageView.contentMode = .scaleAspectFit