Loading a Reusable Uitableviewcell from a Nib

Loading a Reusable UITableViewCell from a Nib

Just implement a method with the appropriate method signature:

- (NSString *) reuseIdentifier {
  return @"myIdentifier";
}

Custom UITableViewCell from nib in Swift

With Swift 5 and iOS 12.2, you should try the following code in order to solve your problem:

CustomCell.swift

import UIKit

class CustomCell: UITableViewCell {

    // Link those IBOutlets with the UILabels in your .XIB file
    @IBOutlet weak var middleLabel: UILabel!
    @IBOutlet weak var leftLabel: UILabel!
    @IBOutlet weak var rightLabel: UILabel!

}

TableViewController.swift

import UIKit

class TableViewController: UITableViewController {

    let items = ["Item 1", "Item2", "Item3", "Item4"]

    override func viewDidLoad() {
        super.viewDidLoad()
        tableView.register(UINib(nibName: "CustomCell", bundle: nil), forCellReuseIdentifier: "CustomCell")
    }

    // MARK: - UITableViewDataSource

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return items.count
    }

    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "CustomCell", for: indexPath) as! CustomCell

        cell.middleLabel.text = items[indexPath.row]
        cell.leftLabel.text = items[indexPath.row]
        cell.rightLabel.text = items[indexPath.row]

        return cell
    }

}

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The image below shows a set of constraints that work with the provided code without any constraints ambiguity message from Xcode:

Nib-file loaded UIView in UITableViewCell does not stretch

I solved it by also adding a width constraint matching the tableViews width. This is code from CustomTableViewCell:

public override func layoutSubviews() {
    super.layoutSubviews()

    if let width = tableView()?.frame.width, !haveAddedWidthConstraint {
        haveAddedWidthConstraint = true
        rowView.addWidthConstraint(width: width)
    }
}

UIViewExtension:

public func addWidthConstraint(width: CGFloat) {
    let widthConstraint = NSLayoutConstraint(item: self, attribute: .width, relatedBy: .greaterThanOrEqual, toItem: nil, attribute: .notAnAttribute, multiplier: 1.0, constant: width)
    widthConstraint.priority = 1000
    addConstraint(widthConstraint)
}

UITableViewCellExtension:

func tableView() -> UITableView? {
    var currentView: UIView = self
    while let superView = currentView.superview {
        if superView is UITableView {
            return (superView as! UITableView)
        }
        currentView = superView
    }
    return nil
}

Cannot load XIB into reusable TableViewCell

While I was missing to add my messagesTable's dataSource which was what Sh_Khan recommended, the solution for my error afterwards was that my reference outlets were pointing to "File's owner" rather than my File's outlets.

So, when selecting the custom TableViewCell (not the prototype) should be:

For some reason, instead of being "Title Label" on the right side, it was "File's owner"

And the prototype cell shouldn't contain any class attached to it.

Failed to Load Custom Cell from dequeue reusable UITableViewCell

There are two methods named dequeueReusableCell.

• dequeueReusableCell(withIdentifier:)
• dequeueReusableCell(withIdentifier:for:)

But the unwrapping fails and the app crashes. tableView.dequeueReusableCell returns nil for some reason....

You are using the first one and the doc clearly says

Return Value

A UITableViewCell object with the associated identifier or nil if no such object exists in the reusable-cell queue.

---

You may want to use the latter.
Change the line:

let cell = tableView.dequeueReusableCell(withIdentifier: "Custom") as! CustomCell

To:

let cell = tableView.dequeueReusableCell(withIdentifier: "Custom", for: indexPath) as! CustomCell

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