ios - Scroll content size not getting set.Horizontal scroll not needed -

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i have designed view in xib using auto layout , programmatically trying set content size of scrollview.horizontal scroll happening on load not expecting.on orientation of device scroll size set on load not working , able scroll horizontally .how avoid this?

- (void)viewdidlayoutsubviews {   scroll.contentsize = cgsizemake(scroll.frame.size.width, attbtn.frame.origin.y+attbtn.frame.size.height+40);//attbtn added programmatically  }


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