Constraint in code SIGABRT Error

Question

I was trying to add constraint to my repeatSegment.

    //Repeat Segment
        repeatSegment?.setNeedsDisplay()

        repeatSegment?.translatesAutoresizingMaskIntoConstraints = false
        let repeatSegmentConstraint1 = NSLayoutConstraint(item: repeatSegment!, attribute: .width, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1.00, constant: 190) <<Error here

Maybe I'm wrong (quite possible), but can you use `self` as a value in `toItem`...shouldn't that be `self.view` or just `view` maybe? I mean...`self` in this case is a `UIViewController` — pbodsk, Jan 19 '17 at 14:53
Don't post screenshots of code in questions. Copy and paste the code itself. I cannot read the code in the question. Same with the error message. Copy and paste text. — Fogmeister, Jan 19 '17 at 15:05
I thought that would provide more reasons why the error occur. Sorry — Quang Dinh Luong, Jan 19 '17 at 15:06
I found this answer: http://stackoverflow.com/a/14033030/4063602 (basically, add the constraint to the superview, not the child. In your case the `view` instead of the `songSlider`) — pbodsk, Jan 19 '17 at 15:09
@QuangDinhLuong I'll take the liberty of writing an answer then, OK? — pbodsk, Jan 19 '17 at 15:45

score 0 · Accepted Answer · edited May 23 '17 at 12:24

0

As can be seen in the comments above there was two problems here.

self could not be used as a parameter to toItem. In this case self was a UIViewController which caused the error. To fix this, view was used instead.
As can be seen in this answer the constraint must be added to the superView instead of the child, in this case to view instead of songSlider.

edited May 23 '17 at 12:24

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answered Jan 19 '17 at 15:50

pbodsk

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Constraint in code SIGABRT Error

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