Adding unknown number of rows to 'Static Cells' UITableView

Question

I have a static table created in Interface Builder with 6 sections all with different amounts of rows. I now want to add a 7th section with a varying number of rows.

Answer 1

I will post answer in Swift, but it should work in Objective-C as well.

In my experience, it was enough to override these methods in UITableViewController:

tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int
tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat
tableView(tableView: UITableView, indentationLevelForRowAtIndexPath indexPath: NSIndexPath) -> Int

If you want to have custom table view cell in your table view, you need to crate subclass of UITableViewCell also with nib, and register it to your table view.

My whole controller looks like this:

var data = ["Ahoj", "Hola", "Hello"]

override func viewDidLoad() {
    super.viewDidLoad()

    tableView.registerNib(UINib(nibName: "CustomCell", bundle: nil), forCellReuseIdentifier: "reuseIdentifier")
}

// MARK: - Table view data source

override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    if section == 1 {
        return data.count
    }
    return super.tableView(tableView, numberOfRowsInSection: section)
}

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    if indexPath.section == 1 {
        let cell = tableView.dequeueReusableCellWithIdentifier("reuseIdentifier", forIndexPath: indexPath) as! CustomCell
        cell.titleLabel.text = data[indexPath.row]
        return cell
    }
    return super.tableView(tableView, cellForRowAtIndexPath: indexPath)
}

override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
    return 44
}

override func tableView(tableView: UITableView, indentationLevelForRowAtIndexPath indexPath: NSIndexPath) -> Int {
    return 0
}

override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    tableView.deselectRowAtIndexPath(indexPath, animated: true)
    if indexPath.section == 1 {
        print(data[indexPath.row])
    }
}

@IBAction func addItem() {
    data.append("Item \(data.count)")
    tableView.beginUpdates()
    tableView.insertRowsAtIndexPaths([NSIndexPath(forRow: data.count - 1, inSection: 1)], withRowAnimation: .Left)
    tableView.endUpdates()
}

@IBAction func removeItem() {
    if data.count > 0 {
        data.removeLast()
        tableView.beginUpdates()
        tableView.deleteRowsAtIndexPaths([NSIndexPath(forRow: data.count, inSection: 1)], withRowAnimation: .Left)
        tableView.endUpdates()
    }
}