xib with UICollectionView - not key value coding compliant

Question

I have a Custom UIView with an XIB. This custom UIView has a UICollectionView which is connected to an IBOutlet. In the view setup, the UICollectionView is initialised properly and is not nil.

However in the cellForItemAtIndexPath method, I get this error:-

Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[ setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key selectorCollectionView.'

If I remove the datasource and delegate, I do not get any error. If I add them Iget an error at this line:-

let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "selectorCell", for: indexPath) as! SelectorCell

Please help!

Edit: I have attached screenshots of my setup

I have uploaded the project here too http://www.fast-files.com/getfile.aspx?file=148623

Answer 1

Maybe a sync issue. Happens sometimes:

1. Try cut outlets loose and reconnect them.

2. Make sure Collection Reusable View identifier is defined in xib file:

3. Make sure collection-view cell's custom class is define in xib file:

EDIT: I dug into your project and here are my findings

UICollectionView should be init' in awakeFromNib method (override it):

override func awakeFromNib() {
    super.awakeFromNib()
    let cellNib = UINib(nibName: String(describing: "SelectorCell"), bundle: nil)
    selectorCollectionView.register(cellNib, forCellWithReuseIdentifier: "selectorCell")
    selectorCollectionView.dataSource = self
    selectorCollectionView.delegate = self
}

loadViewFromNib should be looking like this (Remove collection view init'):

func loadViewFromNib() -> UIView {
    let nib = UINib(nibName: "SelectorView", bundle: nil)
    let view = nib.instantiate(withOwner: self, options: nil).first as! UIView
    return view
}

Subclass SelectorTableViewCell likewise.

class SelectorTableViewCell: UITableViewCell {
    @IBOutlet weak var selectorView: SelectorView!
}

In Main.storyboard - custom class UITableViewCell to SelectorTableViewCell and connect SelectorView inside contentView to 'SelectorTableViewCell''s outlet.

That's it i think. Here is the project:

Answer 2

You can try the following:

1. Click on File Owner at the left panel of YourCell.xib. Then go to Attributes inspector and check whether there is any class specified in Class field. If not - no help from me here. If yes - remove it and tap Enter.

2. In YourCell.xib sequentially click on all subviews and delete all the outlets in Connections Inspector. No need to delete them in YourCell.swift.

3. Once your cell's File Owner and outlets are removed, we're ready to reconnect the outlets. Just drag every one as usually to an existing corresponding IBOutlet in YourCell.swift.

As a result, when you click on YourCell at the left panel of YourCell.xib and go to Connections Inspector, you'll see there are all the outlets connected. Like so:

And if you check connections for a particular view in YourCell, you should see that it's outlet is connected to YourCell (StaticSlot in my case).

This helped me and hope you'll get the same.