I am trying to create my own vertical UIScrollView that can handle multiple pages with different page heights.
Assumptions:
- page height equal to or greater than screen height
- If the page is higher than the height of the screen, it scrolls, as usual, UIScrollView - with a jump up and down
- if the user finishes scrolling and the “page break” is in the middle of the screen
- if the brackets are not tied to speed
- if speed - the page changes to one in the direction of scrolling
I tried many approaches to achieve this, but I came across many UIScrollView quirks that make it difficult.
Problems:
- UIPanGestureRecognizer has an unreliable method for getting speed (velocityInView :)
- The scrollViewWillEndDragging: withVelocity: targetContentOffset: method gives me a headache because it can arbitrarily destroy my attempts to animate the content offset setting
- I don’t know how to achieve a rebound on one of the middle pages, I'm afraid I would have to rewrite all the scroll processing.
- when I try to override the content offset setting when the UIScrollView slows down I get
- set my content offset
- the slowdown continues beyond the content bias that I set
Bonus
I also tried putting the UIScrollView inside the UIScrollView as a page, but this approach was also a pain in the neck. For example, when I was at the bottom of the scroll, I scrolled a bit, put my finger down and quickly grabbed it again and scrolled up, the outer scroll got a touch that got ruined in the inner scroll.
Does anyone have any ideas how to do this? Any advice would be helpful as I am completely stuck ...
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