?????????￡?iOS????
Event Queue(????????Event???????滹?к??Event???App??????????)
______
|Event|
-------
|Event|
-------    UIApplication?????????Event
|Event|  ---------------------->UIApplication???????????
| ??????????????????????Event??UIWindow
---------
|         |
????UIWindow   Key UIWindow
|  ???hitTest:withEvent:???????????UIView??
---------
|         |
????View      UIView
|  ???hitTest:withEvent:???????????UITableView??
---------
|         |???hitTest:withEvent:???????????View??????????????????????????????Event
????View  UITableView
UITableView(????touchesMoved:withEvent:????Event????????super??touchesMoved:withEvent:???View(???????nextResponder???п?????UIViewController)???????????Event)->??View(????touchesMoved:withEvent:????Event)
???????
???????iOS????????????????2??
????1????????е?View
????2??????е?View??????????????????????????View???????????????????????
???????????Щ???????????hitTest:withEvent:?????pointInside:withEvent:??????????????????????????Event????????????UIApplication???????????Щ???????????????????UIResponder?????????????????????????????