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苹果开发中文网站iOS 事件(UITouch、UIControl、UIGestureRecognizer)传递机制

 5 years ago
source link: http://www.cocoachina.com/ios/20190220/26383.html
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一.触摸、事件、响应者1. UITouch 源起触摸 一个手指一次触摸屏幕，就对应生成一个UITouch对象。多个手指同时触摸屏幕，生成多个UITouch对象。

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