UIButton的几种触发方式
2015-12-11 13:32
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UIButton的几种触发方式
UIControlEventTouchDownUIControlEventTouchDownRepeat
UIControlEventTouchDragInside
UIControlEventTouchDragOutside
UIControlEventTouchDragEnter
UIControlEventTouchDragExit
UIControlEventTouchUpInside
UIControlEventTouchUpOutside
UIControlEventTouchCancel
UIControlEventValueChanged
UIControlEventPrimaryActionTriggered
UIControlEventEditingDidBegin
UIControlEventEditingChanged
UIControlEventEditingDidEnd
UIControlEventEditingDidEndOnExit
UIControlEventAllTouchEvents
UIControlEventAllEditingEvents
UIControlEventApplicationReserved
UIControlEventSystemReserved
UIControlEventAllEvents
UIControlEventTouchDown:左键按下
UIControlEventTouchDownRepeat:连续按下,双击、三击……
多次重复按下时,事件序列是这样的: UIControlEventTouchDown -> (UIControlEventTouchUpInside) -> UIControlEventTouchDown -> UIControlEventTouchDownRepeat -> (UIControlEventTouchUpInside) -> UIControlEventTouchDown -> UIControlEventTouchDownRepeat -> (UIControlEventTouchUpInside) -> ……
UIControlEventTouchDragInside:按下鼠标,然后在控件边界范围内拖动
UIControlEventTouchDragOutside
与UIControlEventTouchDragInside不同的是,拖动时,鼠标位于控件边界范围之外。但首先得有个UIControlEventTouchDown事件,然后接一个UIControlEventTouchDragInside事件,再接一个UIControlEventTouchDragExit事件,这时,鼠标已经位于控件外了,继续拖动就是UIControlEventTouchDragOutside事件了。
具体操作是:在控件里面按下鼠标,然后拖动到控件之外。
UIControlEventTouchDragEnter:从控件边界外到内时产生的事件
UIControlEventTouchDragExit:从控件边界内到外时产生的事件
UIControlEventTouchUpInside:指鼠标在控件范围内抬起
前提先得按下,即UIControlEventTouchDown或UIControlEventTouchDownRepeat事件
UIControlEventTouchUpOutside
指鼠标在控件边界范围外抬起,前提先得按下,然后拖动到控件外,即 UIControlEventTouchDown -> UIControlEventTouchDragInside(n 个) -> UIControlEventTouchDragExit -> UIControlEventTouchDragOutside(n 个) 时间序列,再然后就是抬起鼠标,产生UIControlEventTouchUpOutside事件。
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