I have a simple UIImageView with 50x50 size.
If I had a UIView of size 100x100 and I wanted to center the image inside of it, all I have to do is set these
But how do I do the same with a UIStackView of size 100x100?
EDIT i think i should have been more clear. The questions is, how do i center the image both vertically & horizontally inside of the UIStackview ?
Use two stack views.
Vertical stack view with centre alignment.
Inside that is a horizontal stack view with centre alignment t.
Inside that is your image.
You need to set the alignment to center inside attribute inspector of UIStackView
Check attribute inspector for stackview settings:
follow these steps.
1) drag Uiimageview.
2) click on UIimageview. Press Ctrl and drag downward or sidewise to parent view.
3) click on "centre vertically in view" and centre "horizontally in view"
4) then set height and width like below.
Thats it. your imageview will be at centre regardless of the device type. good luck.
leave a comment if you any question. Accept the answer if it helps you.
来源：https://stackoverflow.com/questions/45406910/how-to-center-both-vertical-and-horizontal-inside-a-uistackview