toggle button with boolean in UITableView Swift - swift

Question

I would like to add a boolean toggle to know whether the button has been pressed (will save this value to core data (also would like to save cell data to core data if true and delete from core data if false)) I am not sure how to do this. any help would be greatly appreciated. if all the code from the view controller is required leave a comment and I will do so (I have setup xcdatamodel already).
#IBAction func buttonTapped(_ sender:UIButton) {
var superView = sender.superview
while !(superView is UITableViewCell) {
superView = superView?.superview
}
let cell = superView as! UITableViewCell
if let indexpath = tableView.indexPath(for: cell){
print(indexpath)
}
}

Answer 1

Well I build a simple project and I figured something out using protocols,
First you define a protocol like this:
protocol cellDidRequestSaving {
func saveOrDelete(indexpath : Int)
}
First in your cell you define you button like this :
class TableViewCell: UITableViewCell {
var delegate: cellDidRequestSaving?
var indexPath = 0 //come from the parent
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
#IBAction func didTap(_ sender: Any) {
// this protocol defined in the parent
delegate?.saveOrDelete(indexpath: indexPath)
}
}
now in you tableViewController you use the protocol like this:
class TableViewController: UITableViewController, cellDidRequestSaving {
var cellStat = [Int:Bool]()
override func viewDidLoad() {
super.viewDidLoad()
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = false
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem
}
// MARK: - Table view data source
override func numberOfSections(in tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
return 3
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! TableViewCell
cell.indexPath = indexPath.row
cell.delegate = self
// Configure the cell...
return cell
}
func saveOrDelete(indexpath: Int) {
if let status = cellStat[indexpath], status {
print(indexpath, "delete")
cellStat[indexpath] = !status
}
else {
print(indexpath, "save")
cellStat[indexpath] = true
}
}
This is a simple project but you can get the hole idea about how to do it. Also, notice the protocol definition and usage so you wont miss anything.
and the out put is this

Answer 2

Add a property to your custom cell, for example:
var indexPath: IndexPath = IndexPath(row: -1, section: -1) //The -1 just know when it is not set yet
And in cellForRow in your tableView:
cell.indexpath = indexPath
Supposing that buttonTapped is defined in your custom cell class:
#IBAction func buttonTapped(_ sender:UIButton) {
print(indexpath)
}

Answer 3

Add a delegate method to your cell - (void)myCell:(MyCell *)cell didTapButton:(UIButton *)button
So then in your VC you can work backwards from the cell object.
- (void)myCell:(MyCell *)cell didTapButton:(UIButton *)button
{
NSIndexPath *indexPath = [self.tableView indexPathForCell:cell];
MyObject *object = [self.dataSource objectAtIndexPath:indexPath];
// Do something with the knowledge that the button in the cell for the object was tapped...
// For example
object.tapped = YES;
[object.managedObjectContext save:NULL];
}
Just need to convert to swift ;)