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UIKit

Reimplementing UIScrollView

Suppose UIScrollView didn't exist and you had to build a UIView subclass where content follows your finger. Which property would you change to move the content?

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Move your own bounds.origin by the UIPanGestureRecognizer's translation; the subview frames stay put but every subview appears to shift together. One transform on the container does it, instead of moving each subview's frame.

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