Which method should be called to force a UI redraw in the current update cycle: setNeedsLayout or layoutIfNeeded?

To force a UI redraw in the current update cycle, you should call the layoutIfNeeded() method.

• setNeedsLayout() marks the view as needing layout update, but the update will occur later, in the next update cycle.
• layoutIfNeeded() immediately triggers a layout update if the view is marked as needing it.

Example:

view.setNeedsLayout()      // Mark as needing update
view.layoutIfNeeded()      // Immediately perform update if needed