How to pass an object associated with UITapGestureRecognizer - ios

Question

I have a CustomTableViewCell where there is an image. This image is associated with UITapGestureRecognizer.
When i click in this image i need pass the object, based on the cell and indexPath, to the selector, like this:
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("cellTotal") as TotalTableViewCell
let schedulle = schedulleList[indexPath.row] as Schedulle
let tap = UITapGestureRecognizer(target: self, action: "edit:")
tap.numberOfTapsRequired = 1
tap.numberOfTouchesRequired = 1
//simulation code - here i need pass the object clicked
tap.AssociatedObject = schedulle
cell.imgSchedulleEdit.addGestureRecognizer(tap)
return cell
}
func edit(sender: UITapGestureRecognizer) {
//simulation code getAssociated Object
let schedulle = sender.getAssociatedObject as Schedulle
}
I know, this is not good, generally i use didSelectRow, but this app needs a click on specific image of cell.
Schedulle have attributes:
import Foundation
import CoreData
class Schedulle: NSManagedObject {
#NSManaged var createdDate: NSDate
#NSManaged var message: String
}

Answer 1

Instead of adding the gesture recognizer in the dequeue cell method, add it in the TotalTableViewCell subclass with the cell as the target, then provide a delegate callback to your view controller, along the lines of totalTableViewCellDidTapImage(cell: TotalTableViewCell)
Now in your view controller you can get the index path for this row by using
func totalTableViewCellDidTapImage(cell: TotalTableViewCell) {
let indexPath = myTableView.indexPathForCell(cell)
let schedulle = schedulleList[indexPath.row] as Schedulle
// do stuff with schedulle
}

Answer 2

Instead of using a UIImageView, use UIButton, and use the button's method setImage(_:forState:) to set your image. Then you can you activate the event using addTarget, which will pass an instance of the button to the action.

Answer 3

According #someGuy and #backsquare, i'll post the complete answer:
I changed for button instead of button.
1 - I defined the protocol, in custom table view cell:
protocol SchedulleEdit : NSObjectProtocol{
func totalTableViewCellEdit(cell: TotalTableViewCell)
}
2 - i created the var, in custom table view cell to receive the delegate
protocol SchedulleEdit : NSObjectProtocol{
func totalTableViewCellEdit(cell: TotalTableViewCell)
}
class TotalTableViewCell: UITableViewCell {
var delegate : SchedulleEdit? = nil
...
}
3 - i defined the function to capture selected cell and send it to the view controller that implement our protocol.
protocol SchedulleEdit : NSObjectProtocol{
func totalTableViewCellEdit(cell: TotalTableViewCell)
}
class TotalTableViewCell: UITableViewCell {
var delegate : SchedulleEdit? = nil
...
}
#IBAction func edit(sender: UIButton) {
self.delegate?.totalTableViewCellEdit(self)
}
}
4 - In ViewController or in TableViewController, depends your case, i implemented the protocol SchedulleEdit:
class TotalViewController: UIViewController,UITableViewDataSource,UITableViewDelegate, SchedulleEdit{
...
}
5 - In cellForRowAtIndexPath i set the delegate for:
class TotalViewController: UIViewController,UITableViewDataSource,UITableViewDelegate, SchedulleEdit{
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("cellTotal") as TotalTableViewCell
cell.delegate = self
...
}
}
6 - Finally i implemented the required method of our protocol:
class TotalViewController: UIViewController,UITableViewDataSource,UITableViewDelegate, SchedulleEdit{
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("cellTotal") as TotalTableViewCell
cell.delegate = self
...
}
func totalTableViewCellEdit(cell: TotalTableViewCell) {
let indexPath = self.tblTotal.indexPathForCell(cell)
let row = indexPath?.row
let schedulle = self.schedulleList[row!] as Schedulle
println(schedulle.message)
}
}