Can you explain what happens when the layoutSubviews method is called in UIKit?

The layoutSubviews method in UIKit is called on a UIView when the system or the developer requires the rearrangement and resizing of its subviews.

What happens when layoutSubviews is called:

• UIView recalculates the frames (CGRect) of its subviews.
• This allows the interface to adapt to changes, such as device rotation, resizing of the parent view, or dynamic content changes.
• By default, the method does nothing, but it can be overridden to set a custom layout for subviews.

Example of overriding:

override func layoutSubviews() {
    super.layoutSubviews()
    // Set custom layout for subviews
    mySubview.frame = CGRect(x: 10, y: 10, width: 100, height: 50)
}

It is important not to call setNeedsLayout inside layoutSubviews to avoid infinite recursion.