ios - Make UIScrollView work only on content part, not "sides" -

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here's scroll view (it gray area). content area yellow. notice insets, can scroll sides of content on middle of screen.

problem: can put finger on gray area , scroll it.

i want work can scroll putting finger on yellow content. if put finger on gray "background" , try scroll it, nothing should happen.

how this?

yellow content scrolled right, rests here:

enter image description here

yellow content scrolled left, rests here:

enter image description here

make subclass of uiscrollview. give reference yellow view. override pointinside:withevent: return false unless point in frame of yellow view.

class myscrollview: uiscrollview {      @iboutlet var yellowview: uiview?      override func pointinside(point: cgpoint, withevent event: uievent?) -> bool {         return yellowview?.frame.contains(point) ?? false     }  }

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