How to link delegate and datasource to multiple tableviews in one ViewController? - ios

Question

I created two UITableView inside a UIViewController. To link to the delegate and datasource I used the basic method, holding Ctrl and dragging to the "yellow ball" above. However, I can only do this with one, when each UITableView should separately have its own database in the class. When I do the same with the second UITableView, it apparently links the same datasource and delegate to both, without extracting the data from the class to the second and displaying them on the screen.
How can I fix that?
//I declared four buttons, two in each table view.
#IBOutlet weak var btnDrop: UIButton!
#IBOutlet weak var tblView: UITableView!
#IBOutlet weak var btnDropProj: UIButton!
#IBOutlet weak var tblViewProj: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
tblView.isHidden = true
tblViewProj.isHidden = true
}
var selectClient = ["Cliente 1", "Cliente 2", "Cliente 3", "Cliente 4", "Cliente 5", "Cliente 6", "Cliente 7", "Cliente 8"]
var selectProject = ["Projeto 1", "Projeto 2", "Projeto 3", "Projeto 4", "Projeto 5", "Projeto 6", "Projeto 7", "Projeto 8"]

Answer 1

It seems to me that you are trying to link your table views to 2 different data sources.
You can do that by first creating 2 separate data sources like below.
class Table1DataSource: NSObject, UITableViewDataSource {
// Properties
private var table1Data: [String]
init(table1Data: [String]) {
self.table1Data = table1Data
super.init()
}
// MARK: - Data Source
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.table1Data.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
var profileCell: ProfileCell
let cell = tableView.dequeueReusableCell(withIdentifier: Table1Cell.reuseIdentifier, for: indexPath) as! Table1Cell
// Initialize the cell here
return cell
}
}
After that you can link the data source to your table view in your controller.
class MainController: UIViewController {
// Outlets
#IBOutlet weak var tblView: UITableView!
#IBOutlet weak var tblViewProj: UITableView!
// Properties
var selectClient = ["Cliente 1", "Cliente 2", "Cliente 3", "Cliente 4", "Cliente 5", "Cliente 6", "Cliente 7", "Cliente 8"]
var selectProject = ["Projeto 1", "Projeto 2", "Projeto 3", "Projeto 4", "Projeto 5", "Projeto 6", "Projeto 7", "Projeto 8"]
// DataSource
lazy var tblViewDataSource: Table1DataSource = {
return Table1DataSource(table1Data: self.selectClient)
}()
override func viewDidLoad() {
super.viewDidLoad()
self.tblView.dataSource = self.tblViewDataSource
}
}
All that's left to do is to repeat the steps to link your second table.
Hope it helps!

Answer 2

// MARK: - UITableView datasource
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if tableView == self.tblView {
return selectClient.count
}
else {
return selectProject.count
}
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
if tableView == self.tblView {
let CellIdentifier: String = "YOURCUSTOMCELL"
var cell: YOURCUSTOMCELL? = (tableView.dequeueReusableCell(withIdentifier: CellIdentifier) as? YOURCUSTOMCELL)
if cell == nil {
let topLevelObjects: [Any] = Bundle.main.loadNibNamed("YOURCUSTOMCELL", owner: nil, options: nil)!
cell = (topLevelObjects[0] as? YOURCUSTOMCELL)
cell?.selectionStyle = .none
}
cell?.backgroundColor = UIColor.white
return cell!
}
else {
let CellIdentifier: String = "YOURCUSTOMCELL"
var cell: YOURCUSTOMCELL? = (tableView.dequeueReusableCell(withIdentifier: CellIdentifier) as? YOURCUSTOMCELL)
if cell == nil {
let topLevelObjects: [Any] = Bundle.main.loadNibNamed("YOURCUSTOMCELL", owner: nil, options: nil)!
cell = (topLevelObjects[0] as? YOURCUSTOMCELL)
cell?.selectionStyle = .none
}
cell?.backgroundColor = UIColor.white
return cell!
}
}
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
if tableView == self.tblView {
return 50.0
}
else {
return 50.0
}
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableView.automaticDimension
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if tableView == self.tblView {
}
else {
}
}