PatrickDotStar PatrickDotStar - 8 months ago 114
Swift Question

iOS 11 UITableView isEditing flag not set correctly

I have a very weird issue using the iOS 11 SDK.
When setting the

editing
flag of a UITableView on iOS 11 devices and simulators to
false
after deleting a cell using the swipe gesture, it still stays
true
the next line after set.
On iOS 10 devices and below the flag is set correclty to
false
.
Please have a look at this short example.

func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
return true
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell: UITableViewCell = tableView.dequeueReusableCell(withIdentifier: cellReuseIdentifier) as UITableViewCell!
cell.textLabel?.text = animals[indexPath.row]

return cell
}

func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
if editingStyle == .delete {
tableView.deleteRows(at: [indexPath], with: .fade)

endEditingMode()
}
}

func endEditingMode() {
tableView.setEditing(false, animated: true)

// Here we expect `isEditing = false` since it is set the line before but it is still `true` on iOS 11 devices
// On <= iOS 10 devices however its `false`
print(tableView.isEditing)
}


Anyone experiencing similar issues and probably knows how to solve this?
I have already created a radar for apple.

Answer Source

I had similar problem and tried to solve it with delayed dispatch to the main thread and kept on reducing time to see if it makes sense. I have ended up having this:

DispatchQueue.main.async(execute: {
   self.tableView.setEditing(false, animated: true)
})

Solves the issue though you have a little weird delete animation afterwards, presumably due to the fact of the switching state of the tableView and some internal race condition in iOS 11 SDK.

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