iOS 中事件的响应链和传递链 iOS事件链有两条:事件的响应链:Hit-Testing事件的传递链 响应链:由离用户最近的view向系统传递.initial view –> super view –> -.. –> view controller –> window –> Application –> AppDelegate 传递链:由系统向离用户最近的view传递.UIKit –> active app's event queue –> window –> root v ...