Below is a simple example. If you tap and release the first cell, it deselects with the animation as you would expect.
If you tap and release the second cell, you may not notice anything happen at all. You may even need to hold the cell to see the selection, and when you release it reverts back to the unselected state immediately.
This is obviously a contrived example but it shows the essence of the issue. If I wanted to delay the deselection until something had happened I would face the same issue.
Why does this happen and is there any way around it?
import UIKit
class ViewController: UITableViewController {
override func viewDidLoad() {
super.viewDidLoad()
tableView.register(UITableViewCell.self, forCellReuseIdentifier: "Cell")
}
override func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 2
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
cell.textLabel?.text = indexPath.row == 0 ? "Regular deselection" : "Async deselection"
return cell
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if indexPath.row == 0 {
tableView.deselectRow(at: indexPath, animated: true)
} else {
DispatchQueue.main.async {
tableView.deselectRow(at: indexPath, animated: true)
}
}
}
}
