Swift UITableview Reload Cell - swift

Question

I'm stuck with the following, any inputs would be highly appreciated.
My app has a UITableViewController with custom cells. Let's name its UITableView as TABLE VIEW-1. I am using XIB as its custom cell. Inside that xib, there is another UITableView, (TABLE VIEW-2), with another XIB as its custom cell.
My question is, How can I reload cells of (TABLE VIEW-2) from (TABLE VIEW-1) once I get data from an API in (TABLE VIEW-1). I want to use delegate and protocols to do this.
OR, What would be the correct way of performing this and how would I go about it?

Answer 1

Create a reference of TableView1 in the TableView2 ViewController. You can do this by
-- Open the Assistant Editor
-- Right-click and drag from your UI element (i.e. label) to the code file
-- Xcode auto inserts code for you to create the name and connection
Then call tableView2.reloadData(), where tableView2 is the name of the outlet you just created.

Answer 2

Create a reference of the TABLE VIEW-2 in the TABLE VIEW-1 custom cell (TABLE VIEW-1 CELL)
Create a method inside TABLE VIEW-1 CELL to reload its data alone with the TABLE VIEW-2 (Optional but useful to organize your code)
Inside the tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell of the TABLE VIEW-1 call reload function
class ViewController: UIViewController {
#IBOutlet weak var mainTable: UITableView!
let sampleData = [
(section: "News", SubSections: [
"Breaking news",
"Current Affairs",
"Local"
]) ]
override func viewDidLoad() {
super.viewDidLoad()
self.mainTable.estimatedRowHeight = 200
self.mainTable.rowHeight = UITableView.automaticDimension
let nib: UINib = UINib(nibName: String(describing: MainCell.self), bundle: Bundle.main)
self.mainTable.register(nib, forCellReuseIdentifier: String(describing: MainCell.self))
}
}
extension ViewController: UITableViewDataSource {
func numberOfSections(in tableView: UITableView) -> Int {
1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
self.sampleData.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell: MainCell = tableView.dequeueReusableCell(withIdentifier: String(describing: MainCell.self), for: indexPath) as! MainCell
let sectionData = self.sampleData[indexPath.row]
cell.setUpData(title: sectionData.section, data: sectionData.SubSections)
return cell
}
}
class MainCell: UITableViewCell {
#IBOutlet weak var sectionTitle: UILabel!
#IBOutlet weak var internalTable: UITableView!
var tableData:[String]?
override func awakeFromNib() {
super.awakeFromNib()
self.internalTable.estimatedRowHeight = 200
self.internalTable.rowHeight = UITableView.automaticDimension
let nib: UINib = UINib(nibName: String(describing: InsideCell.self), bundle: Bundle.main)
self.internalTable.register(nib, forCellReuseIdentifier: String(describing: InsideCell.self))
}
func setUpData(title: String, data:[String]) {
self.sectionTitle.text = title
self.tableData = data
self.internalTable.reloadData()
}
}
extension MainCell: UITableViewDataSource {
func numberOfSections(in tableView: UITableView) -> Int {
1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
self.tableData?.count ?? 0
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell: InsideCell = tableView.dequeueReusableCell(withIdentifier: String(describing: InsideCell.self), for: indexPath) as! InsideCell
if let subSectionData = self.tableData?[indexPath.row] {
cell.subSectionTitle.text = subSectionData
}
return cell
}
}
class InsideCell: UITableViewCell {
#IBOutlet weak var subSectionTitle: UILabel!
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}