swift - How to make UIScrollView scrolling all content inside it -

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i have uitextview, uiimageview, uilabel inside uiscroll view. made uitextview height equals content , made scrollenabled = false. uiscrollview scrolling not content. want uiscrollview scrolling content inside it. want make detailviewcontroller in news applications. how make it?

i found solve, ctr-drag uitextview height constraint detailviewcontroller , made following 

@iboutlet weak var textviewheight: nslayoutconstraint! {     didset {         self.textviewheight.constant = self.textview.sizethatfits(cgsizemake(self.textview.frame.size.width, cgfloat.max)).height     } }

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