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说说iOS上的事件对象有哪些相关的类，它们之间的关系是怎样的？ #155

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tbfungeek opened this issue Feb 19, 2020 · 0 comments

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tbfungeek commented Feb 19, 2020 •

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iOS 中事件是通过UIEvent 表示的，里面包含了集合类型的allTouches属性，用于表示当前触摸事件的所有触点，也就是说多指触摸事件的情况下，每个手指的触摸信息都会被封装在UITouch类中。

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