I want to position top UIView on top of UITableView using SnapKit - swift

Question

I'm written in snapkit for UI render. I have not use storyboard or nib files.
I want to position top UIView on top of UITableView using SnapKit.
How to write it?
Below is my written code
swift
import UIKit
import SnapKit
class ViewController: UIViewController {
var data: [String] = []
var tableView = UITableView()
var subView = UIView()
var label = UILabel()
override func viewDidLoad() {
super.viewDidLoad()
self.tableView.delegate = self
self.tableView.dataSource = self
// Do any additional setup after loading the view, typically from a nib.
label.text = "Hello?"
self.view.addSubview(self.tableView)
self.tableView.addSubview(self.subView)
self.subView.addSubview(self.label)
self.subView.backgroundColor = .gray
self.tableView.snp.makeConstraints { make in
make.edges.equalToSuperview()
}
self.subView.snp.makeConstraints { make in
make.top.width.equalTo(self.tableView)
make.centerX.equalTo(self.tableView)
make.height.equalTo(200)
}
self.label.snp.makeConstraints { make in
make.centerX.centerY.equalTo(self.subView)
}
for i in 0...100 {
data.append("\(i)")
}
self.tableView.reloadData()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
}
extension ViewController: UITableViewDataSource {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.data.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let element = self.data[indexPath.row]
let cell = tableView.dequeueReusableCell(withIdentifier: "comicListCell") ?? UITableViewCell(style: .normal, reuseIdentifier: "comicListCell")
cell.textLabel?.text = element
return cell
}
}
extension ViewController: UITableViewDelegate {
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
print(self.data[indexPath.row])
}
}
My code :
I want it!:
UIView must placed into UITableView children !!
Sorry my bad english..
Thanks for reading

Answer 1

You want subview which is sticky header of tableview. Change this line self.tableView.addSubview(self.subView) to
tableView.tableHeaderView = subView.

Answer 2

You could easily add the tableView method:
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
if section == 0 {
return self.subView
} else {
return UIView.init(frame: CGRect.zero)
}
}