Wondering how I subclass UITableViewCell in swift 3.0 programmatically? - ios

Question

As the title implies I am trying to customize/subclass the UITableViewCell class in swift 3.0 programmatically and have the custom cells appears in a table.
I have the following subclass of UITableViewCell declared:
import Foundation
import UIKit
class TableViewCellCustom: UITableViewCell {
var myLabel: UILabel!
var myButton: UIButton!
let screenSize = UIScreen.main.bounds
required init(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)!
}
override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
self.contentView.backgroundColor = UIColor.blue
myLabel = UILabel()
myLabel.frame = CGRect(x: 180, y: 20.0, width: 50.0, height: 20.0)
myLabel.textColor = UIColor.black
myLabel.textAlignment = .center
contentView.addSubview(myLabel)
}
}
This should allow me to do the simple case of having a custom cell with a label in a specific location in the cell, of my designation. I am a bit confused though as to how I should integrate this into my ViewController where I am delegating the UITableView.
Currently my ViewController looks like so:
import UIKit
class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
var tableView: UITableView = UITableView()
var items: [String] = ["Party at Dougs", "Pillage at the Village", "Meow party at sams"]
let screenSize: CGRect = UIScreen.main.bounds
var appTitle: UIView! = nil
var appTitleText: UILabel! = nil
override func viewDidLoad() {
super.viewDidLoad()
let screenWidth = screenSize.width
let screenHeight = screenSize.height
tableView.frame = CGRect(origin: CGPoint(x: 0,y :screenHeight*0.12), size: CGSize(width: screenWidth, height: screenHeight*0.88))
tableView.delegate = self
tableView.dataSource = self
tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell")
self.view.addSubview(tableView)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return items.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = UITableViewCell(style: UITableViewCellStyle.default, reuseIdentifier: "td")
cell.textLabel?.text = items[indexPath.row]
self.tableView.rowHeight = screenSize.height * 0.15
return cell
}
}
I think the core of my problem is being unsure how to connect my subclass of UITableViewCell to my TableView. How can I do this? thanks.

Answer 1

For custom cell created programmatically, without using xib, which is your case currently, you can use the below code -
instead of this
tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell")
use this line
tableView.register(TableViewCellCustom.self, forCellReuseIdentifier: "cell")
Also instead of line
let cell = UITableViewCell(style: UITableViewCellStyle.default, reuseIdentifier: "td")
use this line
let cell = TableViewCellCustom(style: UITableViewCellStyle.default, reuseIdentifier: "td")
For when using xib to create custom cell . Use the below code in your UITableViewDataSource cellForAtIndexPath if you have xib for custom cell.
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
var cell = tableView.dequeueReusableCellWithIdentifier("td") as? TableViewCellCustom
if cell == nil {
tableView.registerNib(UINib(nibName: "TableViewCellCustom", bundle: nil), forCellReuseIdentifier: "td")
cell = tableView.dequeueReusableCellWithIdentifier("td") as? TableViewCellCustom
}
cell.textLabel?.text = items[indexPath.row]
self.tableView.rowHeight = screenSize.height * 0.15
return cell
}