How to acces a view from tableViewCell to TableViewController - ios

Question

I have a UITableViewController and UITableViewCell. Now I am try to access a view from a UITableViewCell to UITableViewController by didSelectRowAt function. But I could not do it.
TableViewController
import Foundation
import UIKit
class FlipViewCon: UIViewController, UITableViewDelegate, UITableViewDataSource{
let flipCellId = "flipCellid"
let flipTableView: UITableView = {
let tableView = UITableView()
tableView.backgroundColor = .green
return tableView
}()
override func viewDidLoad() {
super.viewDidLoad()
self.view.backgroundColor = .gray
flipTableView.delegate = self
flipTableView.dataSource = self
flipTableView.frame = CGRect(x: 0, y: 0, width: self.view.frame.width, height: self.view.frame.height)
self.view.addSubview(flipTableView)
flipTableView.register(FlipTableViewCell.self, forCellReuseIdentifier: flipCellId)
}
let countryArray = ["bangladesh", "nepal", "china", "malaysia", "thai land", "japan", "England", "canada"]
let cityArray = ["Dhake","Kathmandu", "Beijing", "Kuala Lumpur", "Bangkok", "tokeyo", "London", "Torento"]
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return countryArray.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: flipCellId, for: indexPath) as! FlipTableViewCell
//cell.textLabel?.text = countryArray[indexPath.row]
cell.zeroLabel.text = countryArray[indexPath.row]
cell.oneLabel.text = cityArray[indexPath.row]
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
UIView.transition(with: FlipTableViewCell.zeroView, duration: 0.5, options: .transitionFlipFromLeft, animations: nil, completion: nil)
FlipTableViewCell.zeroView.isHidden = true
FlipTableViewCell.oneView.isHidden = false
}
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
UIView.transition(with: FlipTableViewCell.oneView, duration: 0.5, options: .transitionFlipFromLeft, animations: nil, completion: nil)
FlipTableViewCell.zeroView.isHidden = false
FlipTableViewCell.oneView.isHidden = true
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return self.flipTableView.frame.width / 4
}
}
TableViewCell
import UIKit
class FlipTableViewCell: UITableViewCell{
override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
setupView()
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
static let zeroView = flipView(myColor: .yellow)
static let oneView = flipView(myColor: .green)
static func flipView(myColor: UIColor) -> UIView {
let view = UIView()
view.backgroundColor = myColor
return view
}
let zeroLabel: UILabel = {
let lb = UILabel()
lb.text = "Zero 0"
return lb
}()
let oneLabel: UILabel = {
let lb = UILabel()
lb.text = "one 1"
return lb
}()
func setupView(){
FlipTableViewCell.zeroView.frame = CGRect(x: 0, y: 0, width: frame.width, height:frame.height)
FlipTableViewCell.oneView.frame = CGRect(x: 0, y: 0, width: frame.width, height: frame.height)
self.addSubview(FlipTableViewCell.zeroView)
self.addSubview(FlipTableViewCell.oneView)
zeroLabel.frame = CGRect(x: 20, y: 0, width: self.frame.width - 40, height: 50)
oneLabel.frame = CGRect(x: 20, y:0, width: self.frame.width - 40, height: 50)
addSubview(zeroLabel)
addSubview(oneLabel)
}
}

Answer 1

Try this:
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if let cell = tableView.cellForRow(at: indexPath) as? FlipTableViewCell {
UIView.transition(with: cell.zeroView, duration: 0.5, options: .transitionFlipFromLeft, animations: nil, completion: nil)
cell.zeroView.isHidden = true
cell.oneView.isHidden = false
}
}
Edit
I have update your FlipTableViewCell
it looks like this
class FlipTableViewCell: UITableViewCell{
override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
setupView()
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
var zeroView : UIView!
var oneView : UIView!
func flipView(myColor: UIColor) -> UIView {
let view = UIView()
view.backgroundColor = myColor
return view
}
let zeroLabel: UILabel = {
let lb = UILabel()
lb.text = "Zero 0"
return lb
}()
let oneLabel: UILabel = {
let lb = UILabel()
lb.text = "one 1"
return lb
}()
func setupView(){
zeroView = flipView(myColor: .yellow)
oneView = flipView(myColor: .green)
zeroView.frame = CGRect(x: 0, y: 0, width: frame.width, height:frame.height)
oneView.frame = CGRect(x: 0, y: 0, width: frame.width, height: frame.height)
self.addSubview(zeroView)
self.addSubview(oneView)
zeroLabel.frame = CGRect(x: 20, y: 0, width: self.frame.width - 40, height: 50)
oneLabel.frame = CGRect(x: 20, y:0, width: self.frame.width - 40, height: 50)
addSubview(zeroLabel)
addSubview(oneLabel)
}
}
And Change some code in FlipViewCon
class FlipViewCon: UIViewController, UITableViewDelegate, UITableViewDataSource{
let flipCellId = "flipCellid"
let flipTableView: UITableView = {
let tableView = UITableView()
tableView.backgroundColor = .green
return tableView
}()
override func viewDidLoad() {
super.viewDidLoad()
self.view.backgroundColor = .gray
flipTableView.delegate = self
flipTableView.dataSource = self
flipTableView.frame = CGRect(x: 0, y: 0, width: self.view.frame.width, height: self.view.frame.height)
self.view.addSubview(flipTableView)
flipTableView.register(FlipTableViewCell.self, forCellReuseIdentifier: flipCellId)
}
let countryArray = ["bangladesh", "nepal", "china", "malaysia", "thai land", "japan", "England", "canada"]
let cityArray = ["Dhake","Kathmandu", "Beijing", "Kuala Lumpur", "Bangkok", "tokeyo", "London", "Torento"]
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return countryArray.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: flipCellId, for: indexPath) as! FlipTableViewCell
//cell.textLabel?.text = countryArray[indexPath.row]
cell.zeroLabel.text = countryArray[indexPath.row]
cell.oneLabel.text = cityArray[indexPath.row]
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if let cell = tableView.cellForRow(at: indexPath) as? FlipTableViewCell {
UIView.transition(with: cell.zeroView, duration: 0.5, options: .transitionFlipFromLeft, animations: nil, completion: nil)
cell.zeroView.isHidden = true
cell.oneView.isHidden = false
}
}
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
if let cell = tableView.cellForRow(at: indexPath) as? FlipTableViewCell {
UIView.transition(with: cell.zeroView, duration: 0.5, options: .transitionFlipFromLeft, animations: nil, completion: nil)
cell.zeroView.isHidden = false
cell.oneView.isHidden = true
}
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return self.flipTableView.frame.width / 4
}
}
Edit2
Replace this method in above solution
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
if let cell = tableView.cellForRow(at: indexPath) as? FlipTableViewCell {
UIView.transition(with: cell.oneView, duration: 0.5, options: .transitionFlipFromLeft, animations: nil, completion: nil)
cell.zeroView.isHidden = false
cell.oneView.isHidden = true
}
}
Hope it will work for you

Answer 2

Do like this
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
let cell = tableView.cellForRow(at: indexPath) as! FlipTableViewCell
// TODO:
}

Answer 3

Just like all the other answers on this post, use the cellForRow(at: IndexPath) method on UITableView, to get a reference to the cells in the table view.
This method returns a UITableViewCell, if the cell is loaded (visible) and nil if the indexPath is not correct or the cell is not loaded.
The code should look like:
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
let cell = tableView.cellForRow(at: indexPath)
// Do something with cell.
}

Answer 4

TableViewController
import Foundation
import UIKit
class FlipViewCon: UIViewController, UITableViewDelegate, UITableViewDataSource{
let flipCellId = "flipCellid"
let flipTableView: UITableView = {
let tableView = UITableView()
tableView.backgroundColor = .green
tableView.allowsMultipleSelection = true
return tableView
}()
let countryArray = ["India","bangladesh", "nepal", "china", "malaysia", "thai land", "japan", "England", "canada"]
let cityArray = ["Delhi","Dhake","Kathmandu", "Beijing", "Kuala Lumpur", "Bangkok", "tokeyo", "London", "Torento"]
override func viewDidLoad() {
super.viewDidLoad()
self.view.backgroundColor = .gray
flipTableView.delegate = self
flipTableView.dataSource = self
flipTableView.frame = CGRect(x: 0, y: 0, width: self.view.frame.width, height: self.view.frame.height)
self.view.addSubview(flipTableView)
self.resetFlag()
flipTableView.register(FlipTableViewCell.self, forCellReuseIdentifier: flipCellId)
}
var flagArray : [String] = []
func resetFlag() {
flagArray.removeAll(keepingCapacity: true)
for _ in 0 ..< self.countryArray.count {
self.flagArray.append("0")
}
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return countryArray.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: flipCellId, for: indexPath) as! FlipTableViewCell
cell.selectionStyle = .none
if flagArray[indexPath.row] == "0" {
cell.zeroView.isHidden = false
cell.oneView.isHidden = true
}else{
cell.zeroView.isHidden = true
cell.oneView.isHidden = false
}
cell.zeroLabel.text = countryArray[indexPath.row]
cell.oneLabel.text = cityArray[indexPath.row]
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if let cell = tableView.cellForRow(at: indexPath) as? FlipTableViewCell {
self.flagArray.remove(at: indexPath.row)
self.flagArray.insert("1", at: indexPath.row)
UIView.transition(with: cell.zeroView, duration: 0.5, options: .transitionFlipFromLeft, animations: nil, completion: { (complete) in
cell.zeroView.isHidden = true
cell.oneView.isHidden = false
})
}
}
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
if let cell = tableView.cellForRow(at: indexPath) as? FlipTableViewCell {
self.flagArray.remove(at: indexPath.row)
self.flagArray.insert("0", at: indexPath.row)
UIView.transition(with: cell.oneView, duration: 0.5, options: .transitionFlipFromLeft, animations: nil, completion: { (complete) in
cell.zeroView.isHidden = false
cell.oneView.isHidden = true
})
}
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return self.flipTableView.frame.width / 4
}
}
TableViewCell
import UIKit
class FlipTableViewCell: UITableViewCell{
override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
setupView()
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
let zeroView = flipView(myColor: .yellow)
let oneView = flipView(myColor: .green)
static func flipView(myColor: UIColor) -> UIView {
let view = UIView()
view.backgroundColor = myColor
return view
}
let zeroLabel: UILabel = {
let lb = UILabel()
lb.text = "Zero 0"
return lb
}()
let oneLabel: UILabel = {
let lb = UILabel()
lb.text = "one 1"
return lb
}()
func setupView(){
zeroView.frame = CGRect(x: 0, y: 0, width: frame.width, height:frame.width/4)
oneView.frame = CGRect(x: 0, y: 0, width: frame.width, height: frame.width/4)
self.addSubview(oneView)
self.addSubview(zeroView)
zeroLabel.frame = CGRect(x: 20, y: (frame.width/4)/2 - 25, width: self.frame.width - 40, height: 50)
oneLabel.frame = CGRect(x: 20, y:(frame.width/4)/2 - 25, width: self.frame.width - 40, height: 50)
zeroView.addSubview(zeroLabel)
oneView.addSubview(oneLabel)
}
}