Nib IBOutlet causes app to crash

Question

Really need your help! I've been through every possible post addressing this issue and nothing seems to work.

So I'm using a .xib file to create a subview within ProfileFoldingCellView.swift, which works perfectly until I attempt to add an IBOutlet in the same class. Here's the code:

import Foundation
import UIKit

class ProfileFoldingCellView: UIView {

    @IBOutlet var mainLabel: UILabel!
    public var cellIndex: Int = 0

    init(index: Int) {
        super.init(frame: CGRect(x: 0, y: 0, width: 0, height: 0))

        cellIndex = index
        print("Index: \(cellIndex)")

        setupContentView()
    }

    func setupContentView() {
        let contentView = UINib(nibName: "ProfileFoldingCellView", bundle: nil).instantiate(withOwner: nil, options: nil)[0] as! UIView
        contentView.autoresizingMask = [.flexibleWidth, .flexibleHeight]

        addSubview(contentView)
    }

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

}

As you can see, the label IBOutlet is created without any issues and there are no other outdated or unused outlets roaming around.

http://imgur.com/a/jb9CA

I've also made sure to set ProfileFoldingCellView.swift as the file owner's class.

Everything runs perfectly until I link the outlet! Then I get this error:

http://imgur.com/a/6hHPG

Trust me, I've tried everything. I've probably re-created the outlet a million times, nothing is working. Any help would be greatly appreciated!

Answer 1

Leave your File's Owner as NSObject and set your view class as ProfileFoldingCellView, your mainLabel should be connected to the UIView object and not File's Owner

Answer 2

I fixed it!

I simply switched the line

let contentView = UINib(nibName: "ProfileFoldingCellView", bundle: nil).instantiate(withOwner: nil, options: nil)[0] as! UIView

with the following:

let contentView = Bundle.main.loadNibNamed("ProfileFoldingCellView", owner: self, options: nil)?[0] as! UIView

I kept the file owner's class as ProfileFoldingCellView