IBDesignable never finishes updating UITableViewCell in storyboard

Question

This is a similar question to this but not quite the same.

I have created a subclass of UITableViewCell which references a custom nib and marked it as @IBDesignable. Changes that are made both in code and from the .xib file display correctly in the simulator and on a device but not in the storyboard.

import UIKit

@IBDesignable class TextFieldTableViewCell: UITableViewCell {

    var view: UIView!

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)

        setup()
    }

    override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)

        setup()
    }

    func setup() {
        view = loadViewFromNib()
        view.frame = bounds
        view.autoresizingMask = [UIViewAutoresizing.FlexibleWidth, UIViewAutoresizing.FlexibleHeight]
        contentView.addSubview(view)
    }

    func loadViewFromNib() -> UIView {

        let bundle = NSBundle(forClass: self.dynamicType)
        let nib = UINib(nibName: "TextFieldTableView", bundle: bundle)
        let view = nib.instantiateWithOwner(self, options: nil)[0] as! UIView

        return view
    }
}

The storyboard displays a permanent "Designables Updating".

Breaking the problem down into a less complex test of only subclassing a UITableViewCell and marking it as @IBDesignable results in the same permanent "Designables Updating".

import UIKit

@IBDesignable class TextFieldTableViewCell: UITableViewCell {

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }

    override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
    }

}

Has anyone had success with creating a @IBDesignable UITableViewCell subclass? This is happening in Xcode 7 beta 6 and beta 5.

I am facing the same issue. But when I put tableViewCell in a normal ViewController, i can do the IBDesignable. So, I believe it is an XCode bug that cell cannot be designable in TableView — Justus Jianxing Zhang, Mar 07 '16 at 03:42
Apple has responded to a bug report I've submitted and it is indeed a bug. — Hamer, Mar 08 '16 at 18:14

Hamer · Accepted Answer · 2017-12-06T17:38:01.673

6

This issue has been resolved as of Xcode 9.

I had reported this issue to Apple and at least have the piece of mind knowing that this is a known bug. It is currently an open issue under the problem ID 17973876.

Edit: As of 12/7/2016 this bug is still marked as open.

edited Dec 06 '17 at 17:38

answered Mar 08 '16 at 18:13

Hamer

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This is currently happening to me on XCode9? Should I also be looking to report the issue to them as well? – Alan May 14 '18 at 07:42
I just placed a UICollectionView in my Custom UIView and it's also not rendering in the Storyboard. I am just confused is the issue on my end or it's a bug.! – Soumen Jun 04 '18 at 08:35

score 1 · Answer 2 · edited May 23 '17 at 12:10

1

I was having similar problems. This thread helped me understand the issue: Is there a way for Interface Builder to render IBDesignable views which don't override drawRect:

I got it to work by adding

override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        layoutSubviews()
    }

as far as i understand after reading the above stack link, IBDesignable loads the nib in storyboard not from nib or from coder but from the init with frame. Not too sure but I think init with style is doing a similar thing.

edited May 23 '17 at 12:10

Community

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answered Sep 08 '15 at 15:49

mxwt

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Adding the above suggested code doesn't provide any difference. – Hamer Sep 10 '15 at 00:01
are you overiding the layoutSubviews() method and calling super? I had some custom drawing code I needed and so implemented the method. I find xib really fiddly to work with, but that might make the difference. >override func layoutSubviews() { super.layoutSubviews() } – mxwt Sep 11 '15 at 01:51
I've got the same problem with XCode 7.2, and this didn't help. I also don't see how implementing `layoutSubviews` and just calling the superclass version can help - when `layoutSubviews` is called it'll just invoke the superclass version automatically if it's not overridden. – Alnitak Jan 29 '16 at 22:28

score 0 · Answer 3 · answered Jun 13 '16 at 10:46

0

It seems that the "Updating" bug is happening only when the cell is inside a storyboard. Everything works OK when you create special .xib file just for the cell.

Hopefully, they will fix it soon.

answered Jun 13 '16 at 10:46

VojtaStavik

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IBDesignable never finishes updating UITableViewCell in storyboard

3 Answers3

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