How can I make UITableViewCell stick to bottom when isEditing is enabled? - ios

Question

I have a UITableViewCell at the very bottom of tableview, it's functionality is to add new object to the list. But I also want the user to be able to move his objects. And here comes the problem I can not solve: how can I make this UITableViewCell not movable when tableView.isEditing is true so it is always at the bottom of section, even when user tries to move it there?

Answer 1

Here's a simple example of preventing rows from being moved past the last row:
class ReorderViewController: UITableViewController {
var myData = ["One","Two","Three","Four","Five","Six","Seven","Eight","Nine","Don't let me move!"]
override func viewDidLoad() {
super.viewDidLoad()
let btn = UIBarButtonItem(barButtonSystemItem: .edit, target: self, action: #selector(self.startEditing(_:)))
navigationItem.rightBarButtonItem = btn
tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell")
}
#objc func startEditing(_ sender: Any) {
isEditing = !isEditing
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return myData.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
cell.textLabel?.text = myData[indexPath.row]
return cell
}
override func tableView(_ tableView: UITableView, canMoveRowAt indexPath: IndexPath) -> Bool {
// don't allow last row to move
return indexPath.row < (myData.count - 1)
}
override func tableView(_ tableView: UITableView, targetIndexPathForMoveFromRowAt sourceIndexPath: IndexPath, toProposedIndexPath proposedDestinationIndexPath: IndexPath) -> IndexPath {
// if user tries to drop past last row
if proposedDestinationIndexPath.row == myData.count - 1 {
// send it back to original row
return sourceIndexPath
}
return proposedDestinationIndexPath
}
override func tableView(_ tableView: UITableView, moveRowAt sourceIndexPath: IndexPath, to destinationIndexPath: IndexPath) {
let itemToMove = myData[sourceIndexPath.row]
myData.remove(at: sourceIndexPath.row)
myData.insert(itemToMove, at: destinationIndexPath.row)
}
}