What layout methods of elements do you know in UIView?

In iOS, elements inside a UIView are positioned using several main methods:

1. Frame-based layout — directly setting the coordinates and sizes of elements through the frame property.

2. Auto Layout — declarative description of constraints that define the relative positioning and sizes of elements. It allows adapting the interface to different screen sizes.

3. Stack Views (UIStackView) — containers that automatically arrange nested elements horizontally or vertically with specified spacing and alignment.

4. Autoresizing Masks (springs and struts) — an older method that allows elements to resize and reposition when the superview's size changes.

Currently, Auto Layout and UIStackView are most commonly used for flexible and adaptive layouts.