Infinite Scrolling Setup

ViewController.swift

//
//  ViewController.swift
//  Example
//
//  Created by John DeLong on 5/11/16.
//  Copyright © 2016 delong. All rights reserved.
//

import UIKit

extension Date {
    func dateFromDays(_ days: Int) -> Date {
        return (Calendar.current as NSCalendar).date(byAdding: .day, value: days, to: self, options: [])!
    }
}

class ViewController: UIViewController {

    @IBOutlet weak var tableView: UITableView!

    let cellHeight: CGFloat = 44
  
    let dateFormatter = DateFormatter()

    lazy var days: [Date] = {
        let beginDate = Date().dateFromDays(-29)
        let endDate = Date().dateFromDays(30)
        return self.generateDays(beginDate, endDate: endDate)
    }()

    override func viewDidLoad() {
        super.viewDidLoad()

        self.tableView.delegate = self
        self.tableView.dataSource = self

        self.dateFormatter.dateFormat = "MM-dd-yyyy"
    }

    func generateDays(_ beginDate: Date, endDate: Date) -> [Date] {
        var dates: [Date] = []
        var date = beginDate

        while date.compare(endDate) != .orderedDescending {
            dates.append(date)
            date = date.dateFromDays(1)
        }
        return dates
    }
}

extension ViewController: UITableViewDataSource {
    func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }

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

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = UITableViewCell()
        cell.textLabel!.text = self.dateFormatter.string(from: self.days[(indexPath as NSIndexPath).row])
        return cell
    }
}

extension ViewController: UITableViewDelegate {

    func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        return self.cellHeight;
    }

    func scrollViewDidScroll(_ scrollView: UIScrollView) {
        // TODO: Add infinite scrolling functionality
    }
}