ios - What function is called whenever a UIPageViewController is swiped? -

i need execute function whenever uipageview swiped.

conform uipageviewcontrollerdelegate , implement following methods:

func pageviewcontroller(uipageviewcontroller, willtransitionto: [uiviewcontroller]) {     // called when swiping begins }  func pageviewcontroller(uipageviewcontroller, didfinishanimating: bool, previousviewcontrollers: [uiviewcontroller], transitioncompleted: bool) {     // called when swiping ends }