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原标题:putting a view as subview of UIScrollView isn t putting at UIScrollView s content offset(0,0)

I have a view a which I am putting on scrollView. The y coordinate of a is set to zero. And the scrollView dimensions are set accordingly, contentSize of scrollView is set to fit the view a .

But still scrollview is shifting the view a upwards. What could be the reason?

感谢你,

问题回答

To start with, here are a few things to check:

  • What is the frame of the view a? Verify that a.frame.origin.y is 0.
  • What are the bounds of the scrollView? Verify that scrollView.bounds.origin.y is 0.
  • What is the size of the scrollView (scrollView.bounds.size)? This different is from its contentSize. Is it large enough to fit a inside of it?




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