How do I get the row number of the cell where the UITextView was edited? - swift

Question

I have a UITextView inside each cell of a UITableView
I am using Core Data to save data which is typed in the UITextView
I would like to save the text typed in UITextView once the user is done editing it
I have added UITextViewDelegate to my TableViewCell class
I am using Notifications to post the new text to the TableViewController
I am able to get the new text to the TableViewController but I don't know how to get the row number of the cell that contained the textview wherein the text was typed. I need to know the row number (or the object in that row) to update the correct NSManagedObject.
What I have Tried:
I was thinking about using tags but since I need to constantly add and delete rows it wouldn't be the best approach
I have tried using DidSelectedRowAtIndexPath but it doesn't get triggered while the
user taps the UITextView (UITextView covers up to 80% of the one cell)
In the TableViewCell class, I have:
func textViewDidEndEditing(_ textView: UITextView) {
// Post notification
let userInfo = [ "text" : textView.text]
NotificationCenter.default.post(
name: UITextView.textDidEndEditingNotification,
object: nil,
userInfo: userInfo as [AnyHashable : Any])
}
In the TableViewController, I have:
//Subscribe
NotificationCenter.default.addObserver(self,
selector: #selector(textEditingEnded(notification:)),
name: UITextView.textDidEndEditingNotification,
object: nil)
#objc func textEditingEnded(notification:Notification) {
guard let text = notification.userInfo?["text"] as? String else {return}
print ("text: \(text)")
}
Don't hesitate to ask for more details.
I'll appreciate every bit of help I can get!

Answer 1

Create a property of the NSManagedObject type in the table view cell.
In Interface Builder connect the delegate of the text view to the cell.
In the controller pass the appropriate data source item in cellForRowAt to the cell.
Delete the observer and instead of posting a notification change the attribute in the NSManagedObject instance directly and save the context.
As NSManagedObject instances are reference types the changes will persist.

Answer 2

I hope you can have variable inside your UITableViewCell subclass for certain item
var item: Item?
then in cellForRowAt set certain item for certain cell
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = ...
...
cell.item = array[indexPath.row]
...
}
now you can implement UITextViewDelegate to your cell subclass and you can use method textViewDidEndEditing for handling when user is done with typing
class YourCell: UITableViewCell {
...
var item: Item?
...
override func awakeFromNib() {
yourTextView.delegate = self
}
}
extension YourCell: UITextViewDelegate {
func textViewDidEndEditing(_ textView: UITextView) {
... // here save text and here you can use variable `item`
}
}