func updateBodyIfNeeded ()
Updates the interface controller’s set of views immediately, if updates are pending.
Availability 有効性
Technology
func setNeedsBodyUpdate()
Call this method to mark the views of the hosting controller as needing an update.
このメソッドを呼び出して、ホスティングコントローラのビューそれらを更新が必要であると印してください。
During the next update cycle, the hosting controller fetches an updated set of views from its body
property.
func updateBodyIfNeeded ()