What strategies are used for displaying and positioning elements in the interface within View?

In iOS, the following strategies are commonly used for displaying and positioning elements in the interface within a View:

• Auto Layout — a constraint system that allows describing the relative positioning and sizes of elements using rules. Auto Layout adapts to different screen sizes and orientations.
• Frame-based layout — directly setting coordinates and sizes through the frame and bounds properties. Less flexible, but sometimes used for simple or custom interfaces.
• Stack Views (UIStackView) — containers that automatically arrange nested elements horizontally or vertically with specified spacing and alignment.
• Layout Anchors — a more convenient and readable way to set Auto Layout constraints using anchors.

Example of using Auto Layout with layout anchors:

let button = UIButton()
button.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(button)
NSLayoutConstraint.activate([
    button.centerXAnchor.constraint(equalTo: view.centerXAnchor),
    button.centerYAnchor.constraint(equalTo: view.centerYAnchor),
    button.widthAnchor.constraint(equalToConstant: 100),
    button.heightAnchor.constraint(equalToConstant: 50)
])

Thus, the choice of strategy depends on the requirements for interface adaptability and code maintainability.