tvOS Fundamentals - Creating a UITableView with Swift 4

In this first video in our tvOS Fundamentals series, we’ll create a UITableView. Learn how to populate the cell text of each row with a String from an array, then detect which cell is currently highlighted or pressed down on with the Apple remote.

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Example Code


import UIKit

class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {

var tableView:UITableView!

var mainCategories = [String]()

 

override func viewDidLoad() {

super.viewDidLoad()

// Do any additional setup after loading the view, typically from a nib.

 

mainCategories = ["Podcasts","Recent","Free","YouTube","Favorites","Paid"]

 

setUpTableView()

 

}

 

 

func setUpTableView(){

 

let tableFrame:CGRect = CGRect(x: 0, y: 120, width: (self.view.frame.width / 3) – 50 , height: self.view.frame.height – 450)

tableView = UITableView(frame: tableFrame, style: .grouped)

self.view.addSubview(tableView)

 

self.tableView.dataSource = self

self.tableView.delegate = self

 

 

}

 

//MARK: ————-Table stuff

 

 

func numberOfSections(in tableView: UITableView) -> Int {

//1 column

return 1

}

 

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

 

return mainCategories.count

 

}

 

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

 

let cell = UITableViewCell(style:  .subtitle, reuseIdentifier: nil)

cell.textLabel?.text = "\( mainCategories[indexPath.row] )"

 

return cell

}

 

 

func tableView(_ tableView: UITableView, didHighlightRowAt indexPath: IndexPath) {

//this runs on press

print (indexPath.item)

print( mainCategories[indexPath.item] )

 

}

 

func tableView(_ tableView: UITableView, didUpdateFocusIn context: UITableViewFocusUpdateContext, with coordinator: UIFocusAnimationCoordinator) {

 

//runs anytime we move up or down the table view

//

 

if ( context.nextFocusedIndexPath == nil){

print ("not browsing the table")

return

}

 

print ( context.nextFocusedIndexPath!.item )

//use that number to populate something else probably according to the category.

 

}

 

 

 

override func didReceiveMemoryWarning() {

super.didReceiveMemoryWarning()

// Dispose of any resources that can be recreated.

}

}

Tags: UITableView, didUpdateFocus, nextFocusedIndexPath, UITableViewDataSource, UITableViewDelegate, cellForRowAt

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