Still struggling with this… My scrollview containing an imageview seems to work just fine: I can scale and crop an image with no problem. But I’m having difficulty getting the desired “crop circle” to hover over the scrollview properly. When I add it to the main view (not the scrollview) at runtime, I try using autolayout constraints to pin it to the left, top, right, and bottom of the scrollview; but it always appears positioned elsewhere, as if it’s not resizing due to the constraints.
I viewDidLoad(), I create each constraint like this: let lc = NSLayoutConstraint( overlay, attribute: .Left, relatedBy: .Equal, toItem: scrollView, attribute: .Left, multiplier: 1, constant: 0 ) And when all four have been created, I call NSLayoutConstraint.activateConstraints( [ lc, tc, rc, bc ] ) Is this the wrong approach? What’s the right way to display a simple overlay above the content of a scrollView? -- Charles On February 21, 2016 at 20:48:18, Charles Jenkins (cejw...@gmail.com) wrote: I’m trying to do something that’s so simple, conceptually, that I’m sure there’s a demo program for it, if only I could find the right Google search to locate it. I want to allow iOS users to select an image (either from the camera roll or by taking a photo) and display it in a CIRCLE for cropping. Users should be able to scale and position the image as they like to fit within the circle, then tap a DONE button to have the image cropped and saved into my app’s image store. I spent all day today screwing around making a view controller with a scrollview containing an imageview, and I haven’t figured out how to make the circle overlay correctly to fit over the scrollview. Does anybody know of a demo program that’ll show me how to do this? -- Charles _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com