In what cases does the system automatically call the layoutSubviews method?

The layoutSubviews method in iOS is called automatically by the system in the following cases:

• When the size or position of the UIView itself changes (for example, when the frame or bounds are modified).
• When adding or removing subviews, if it affects their layout.
• When the setNeedsLayout() method is called, which marks the view for layout update in the next update cycle.
• When the device orientation changes, which may lead to size changes of the view.

This method is used to configure the layout and sizes of subviews within the current view. It is important not to call layoutSubviews directly, but to use setNeedsLayout to schedule an update.