Adicionar furto para excluir UITableViewCell

Estou fazendo um aplicativo CheckList com um UITableView. Eu queria saber como adicionar um furto para excluir um UITableViewCell.

Este é o meu ViewController.swift:

import UIKit

class ViewController: UIViewController,  UITextFieldDelegate, UITableViewDelegate,      UITableViewDataSource {

var tableView: UITableView!
var textField: UITextField!
var tableViewData:Array<String> = []

// Define Colors

let lightColor: UIColor = UIColor(red: 0.996, green: 0.467, blue: 0.224, alpha: 1)
let medColor: UIColor = UIColor(red: 0.973, green: 0.388, blue: 0.173, alpha: 1)
let darkColor: UIColor = UIColor(red: 0.800, green: 0.263, blue: 0.106, alpha: 1)
let greenColor: UIColor = UIColor(red: 0.251, green: 0.831, blue: 0.494, alpha: 1)

init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: NSBundle?) {
    super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
    // Custom initialization
}

override func viewDidLoad() {
    super.viewDidLoad()

    //Set up table view

    self.tableView = UITableView(frame: CGRectMake(0, 100, self.view.bounds.size.width, self.view.bounds.size.height-100), style: UITableViewStyle.Plain)
    self.tableView.registerClass(MyTableViewCell.self, forCellReuseIdentifier: "myCell")
    self.tableView.backgroundColor = darkColor
    //self.tableView.separatorStyle = UITableViewCellSeparatorStyle.None
    self.tableView.delegate = self
    self.tableView.dataSource = self

    self.view.addSubview(self.tableView)

    //Set up text field

    self.textField = UITextField(frame: CGRectMake(0, 0, self.view.bounds.size.width, 100))
    self.textField.backgroundColor = lightColor
    self.textField.font = UIFont(name: "AvenirNext-Bold", size: 26)
    self.textField.delegate = self

    self.view.addSubview(self.textField)



}

//Table View Delegate

func tableView(tableView: UITableView!, numberOfRowsInSection section: Int) -> Int {

    return tableViewData.count

}

func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell! {

    var myNewCell: MyTableViewCell = tableView.dequeueReusableCellWithIdentifier("myCell", forIndexPath: indexPath) as MyTableViewCell
    myNewCell.text = self.tableViewData[indexPath.row]

    return myNewCell

}

func tableView(tableView: UITableView!, didSelectRowAtIndexPath indexPath: NSIndexPath!) {

    let mySelectedCell:UITableViewCell = tableView.cellForRowAtIndexPath(indexPath)

    //Colors

    mySelectedCell.detailTextLabel.textColor = UIColor.whiteColor()
    mySelectedCell.tintColor = UIColor.whiteColor()

    //Setup Details / Date

    let myDate:NSDate = NSDate()
    var myDateFormatter:NSDateFormatter = NSDateFormatter()
    myDateFormatter.dateStyle = NSDateFormatterStyle.MediumStyle

    mySelectedCell.detailTextLabel.text = myDateFormatter.stringFromDate(myDate)
    mySelectedCell.accessoryType = UITableViewCellAccessoryType.Checkmark
    mySelectedCell.backgroundColor = greenColor

}

override func prefersStatusBarHidden() -> Bool {
    return true

}

//Text Field Delegate

func textFieldShouldReturn(textField: UITextField!) -> Bool {

    tableViewData.append(textField.text)
    textField.text = ""
    self.tableView.reloadData()
    textField.resignFirstResponder()
    return true

}

}

E este é MyTableViewCell.swift:

import UIKit

class MyTableViewCell: UITableViewCell {

let medColor: UIColor = UIColor(red: 0.973, green: 0.388, blue: 0.173, alpha: 1)

init(style: UITableViewCellStyle, reuseIdentifier: String) {
    super.init(style: UITableViewCellStyle.Subtitle, reuseIdentifier: reuseIdentifier)

    self.textColor = UIColor.whiteColor()
    self.backgroundColor = medColor
    self.selectionStyle = UITableViewCellSelectionStyle.None
}

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
}

}

Estou usando o iOS8 como destino de implantação (não tenho certeza da diferença que isso fará).

Adicione estas duas funções:

func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
    return true
}

func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
    if (editingStyle == UITableViewCellEditingStyle.Delete) {
        // handle delete (by removing the data from your array and updating the tableview)
    }
}

Swift 3.0:

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

override func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
    if (editingStyle == UITableViewCellEditingStyle.delete) {
        // handle delete (by removing the data from your array and updating the tableview)
    }
}

Swift 4.2

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

func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCell.EditingStyle, forRowAt indexPath: IndexPath) {
    if (editingStyle == .delete) {
        // handle delete (by removing the data from your array and updating the tableview)
    }
}

Você pode tentar isso:

func tableView(tableView: UITableView!, canEditRowAtIndexPath indexPath: NSIndexPath!) -> Bool {
    return true
}

func tableView(tableView: UITableView!, commitEditingStyle editingStyle:   UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath!) {
    if (editingStyle == UITableViewCellEditingStyle.Delete) {
        NamesTable.beginUpdates()
        Names.removeAtIndex(indexPath!.row)
        NamesTable.deleteRowsAtIndexPaths([indexPath], withRowAnimation: nil)
        NamesTable.endUpdates()

    }
}

Outra maneira que permite alterar o texto de "Excluir" e adicionar mais botões ao deslizar uma célula é usar editActionsForRowAtIndexPath.

func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
    return true
}

func tableView(tableView: (UITableView!), commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: (NSIndexPath!)) {

}

func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [AnyObject]? {

    var deleteAction = UITableViewRowAction(style: .Default, title: "Delete") {action in
       //handle delete
    }

    var editAction = UITableViewRowAction(style: .Normal, title: "Edit") {action in
        //handle edit
    }

    return [deleteAction, editAction]
}

canEditRowAtIndexPathe commitEditingStyleainda são necessários, mas você pode deixar em commitEditingStylebranco porque a exclusão é realizada editActionsForRowAtIndexPath.

    import UIKit

    class ViewController: UIViewController ,UITableViewDelegate,UITableViewDataSource
    {
      var items: String[] = ["We", "Heart", "Swift","omnamay shivay","om namay bhagwate vasudeva nama"]
        var cell : UITableViewCell
}




    @IBOutlet var tableview:UITableView

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.


    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }




    func tableView(tableView: UITableView!, numberOfRowsInSection section: Int) -> Int {
        return self.items.count;
    }


    func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell! {

        var cell = tableView.dequeueReusableCellWithIdentifier("CELL") as? UITableViewCell

        if !cell {
            cell = UITableViewCell(style: UITableViewCellStyle.Value1, reuseIdentifier: "CELL")}



        cell!.textLabel.text = self.items[indexPath.row]

        return cell
        }
    func tableView(tableView: UITableView!, canEditRowAtIndexPath indexPath: NSIndexPath!) -> Bool {
        return true
    }

    func tableView(tableView: UITableView!, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath!) {
        if (editingStyle == UITableViewCellEditingStyle.Delete) {
            // handle delete (by removing the data from your array and updating the tableview)


            if let tv=tableView
            {



             items.removeAtIndex(indexPath!.row)
                tv.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)



        }
    }
}


}

É novo recurso no iOS11 e Swift 4.

Link de referência:

Deslize à direita:

@available(iOS 11.0, *)
override func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
    let delete = UIContextualAction(style: .destructive, title: "Delete") { (action, sourceView, completionHandler) in
        print("index path of delete: \(indexPath)")
        completionHandler(true)
    }

    let rename = UIContextualAction(style: .normal, title: "Edit") { (action, sourceView, completionHandler) in
        print("index path of edit: \(indexPath)")
        completionHandler(true)
    }
    let swipeActionConfig = UISwipeActionsConfiguration(actions: [rename, delete])
    swipeActionConfig.performsFirstActionWithFullSwipe = false
    return swipeActionConfig
}

use-o :

func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
    if editingStyle == UITableViewCellEditingStyle.Delete {
        langData.removeAtIndex(indexPath.row) //langData is array from i delete values
        tableView.deleteRowsAtIndexPaths([indexPath],  withRowAnimation: UITableViewRowAnimation.Automatic)
    }
}

espero que ajude você

Swift 4 - @ disponível (iOS 11.0, *)

func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
    let edit = UIContextualAction(style: .normal, title: "") { (action, view, nil) in
        let refreshAlert = UIAlertController(title: "Deletion", message: "Are you sure you want to remove this item from cart? ", preferredStyle: .alert)

        refreshAlert.addAction(UIAlertAction(title: "Yes", style: .default, handler: { (action: UIAlertAction!) in

        }))

        refreshAlert.addAction(UIAlertAction(title: "No", style: .default, handler: { (action: UIAlertAction!) in
            refreshAlert .dismiss(animated: true, completion: nil)
        }))

        self.present(refreshAlert, animated: true, completion: nil)
    }
    edit.backgroundColor = #colorLiteral(red: 0.3215686275, green: 0.5960784314, blue: 0.2470588235, alpha: 1)
    edit.image = #imageLiteral(resourceName: "storyDelete")
    let config = UISwipeActionsConfiguration(actions: [edit])
    config.performsFirstActionWithFullSwipe = false
    return config
}

Swift 3:

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

func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
    if (editingStyle == UITableViewCellEditingStyle.delete) {
        // delete data and row
        dataList.remove(at: indexPath.row)
        tableView.deleteRows(at: [indexPath], with: .fade)
    }
}

Swift 3 com título personalizado suportado

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

    //If you want to change title
            func tableView(_ tableView: UITableView, titleForDeleteConfirmationButtonForRowAt indexPath: IndexPath) -> String? {
                return "Cancel"
            }

            func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
                if (editingStyle == UITableViewCellEditingStyle.delete) {
// you might want to delete the item at the array first before calling this function
                    tableView.deleteRows(at: indexPath, with: .automatic)
                }
            }

Eu usei o tableViewCell para mostrar vários dados; depois de deslizar () da direita para a esquerda em uma célula, ele mostrará dois botões. leva um argumento.

func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {
    let Approve = UITableViewRowAction(style: .normal, title: "Approve") { action, index in

        self.ApproveFunc(indexPath: indexPath)
    }
    Approve.backgroundColor = .green

    let Reject = UITableViewRowAction(style: .normal, title: "Reject") { action, index in

        self.rejectFunc(indexPath: indexPath)
    }
    Reject.backgroundColor = .red



    return [Reject, Approve]
}

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

func ApproveFunc(indexPath: IndexPath) {
    print(indexPath.row)
}
func rejectFunc(indexPath: IndexPath) {
    print(indexPath.row)
}

A partir do Xcode 6.1.1, existem algumas pequenas alterações na resposta do Dash.

override func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
        return true
    }

    override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
        if (editingStyle == UITableViewCellEditingStyle.Delete) {
            // handle delete (by removing the data from your array and updating the tableview)
        }
    }

Funciona para mim no Swift 2.0

override func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
    return true
}

override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {

}

override func tableView(tableView: UITableView,
    editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [UITableViewRowAction]? {
    let block = UITableViewRowAction(style: .Normal, title: "Block") { action, index in
        print("Block")
        self.removeObjectAtIndexPath(indexPath, animated: true)
    }
    let delete = UITableViewRowAction(style: .Default, title: "Delete") { action, index in
        print("Delete")
        self.removeObjectAtIndexPath(indexPath, animated: true)
    }
    return [delete, block]
}

No Swift 4 tableview adicionar, deslize para excluir UITableViewCell

func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {
    let delete = UITableViewRowAction(style: .destructive, title: "delete") { (action, indexPath) in
        // delete item at indexPath

    }
    return [delete]
}

func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [UITableViewRowAction]?
{

    let delete = UITableViewRowAction(style: UITableViewRowActionStyle.Default, title: "DELETE"){(UITableViewRowAction,NSIndexPath) -> Void in

        print("What u want while Pressed delete")
    }
    let edit = UITableViewRowAction(style: UITableViewRowActionStyle.Normal, title: "EDIT"){(UITableViewRowAction,NSIndexPath) -> Void in

        print("What u want while Pressed Edit")
    }

    edit.backgroundColor = UIColor.blackColor()
    return [delete,edit]
}

Swift 4

@available(iOS 11.0, *)    
func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
            let action =  UIContextualAction(style: .normal, title: "", handler: { (action,view,completionHandler ) in
                //do stuff
                completionHandler(true)
                let data:NSDictionary = self.conversations[indexPath.row] as! NSDictionary
                print(data)
                let alert:UIAlertController = UIAlertController(title: "", message: "are you sure want to delete ?", preferredStyle: .alert)

                alert.addAction(UIAlertAction(title: "CANCEL", style: UIAlertActionStyle.cancel, handler: { (action) in
                }))
                self.present(alert, animated: true, completion: nil)
            })
            action.image = UIImage(named: "")
            action.backgroundColor = UIColor(red: 0/255, green: 148/255, blue: 204/255, alpha: 1.0)
            let confrigation = UISwipeActionsConfiguration(actions: [action])

            return confrigation
        }

Basta adicionar o método:

func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {
    let delete = UITableViewRowAction(style: UITableViewRowActionStyle.destructive, title: "Delete") { (action, indexPath) in
        self.arrayFruit.remove(at: indexPath.row)
        self.tblList.reloadData()
    }

    let edit = UITableViewRowAction(style: UITableViewRowActionStyle.normal, title: "Edit") { (action, indexpath) in

        let alert = UIAlertController(title: "FruitApp", message: "Enter Fuit Name", preferredStyle: UIAlertControllerStyle.alert)
        alert.addTextField(configurationHandler: { (textField) in
            textField.placeholder = "Enter new fruit name"
        })
        alert.addAction(UIAlertAction(title: "Update", style: UIAlertActionStyle.default, handler: { [weak alert](_) in
            let textField = alert?.textFields![0]
            self.arrayFruit[indexPath.row] = (textField?.text!)!
            self.tblList.reloadData()
        }))

        self.present(alert, animated: true, completion: nil)
    }
    edit.backgroundColor = UIColor.blue
    return [delete,edit]
}

aqui Veja meu resultado Swift com botão totalmente personalizável suportado

Bônus antecipado por usar essa implementação de apenas um método e você obtém um botão perfeito !!!

 func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
        let action = UIContextualAction(
            style: .destructive,
            title: "",
            handler: { (action, view, completion) in

                let alert = UIAlertController(title: "", message: "Are you sure you want to delete this incident?", preferredStyle: .actionSheet)

                alert.addAction(UIAlertAction(title: "Delete", style: .destructive , handler:{ (UIAlertAction)in
                    let model = self.incedentArry[indexPath.row] as! HFIncedentModel
                    print(model.incent_report_id)
                    self.incedentArry.remove(model)
                    tableView.deleteRows(at: [indexPath], with: .fade)
                    delete_incedentreport_data(param: ["incent_report_id": model.incent_report_id])
                    completion(true)
                }))

                alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler:{ (UIAlertAction)in
                    tableView.reloadData()
                }))

                self.present(alert, animated: true, completion: {

                })


        })
        action.image = HFAsset.ic_trash.image
        action.backgroundColor = UIColor.red
        let configuration = UISwipeActionsConfiguration(actions: [action])
        configuration.performsFirstActionWithFullSwipe = true
        return configuration
}

SWIFT 3 - UIViewController

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

func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
    if (editingStyle == UITableViewCellEditingStyle.delete) {
        // handle delete (by removing the data from your array and updating the tableview)
        print("delete tableview cell")
    }
}

rápido 3

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

    return true
}

func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {

    if (editingStyle == UITableViewCellEditingStyle.delete) {

        arrayCityName.remove(at: indexPath.row)
        self.tableCityName.reloadData()
    }
}

basta adicioná-los, assumindo que sua matriz de dados é 'data'

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

func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
    if (editingStyle == UITableViewCellEditingStyle.delete) {
        // handle delete (by removing the data from your array and updating the tableview)
        if let tv=table
        {



            data.remove(at: indexPath.row)
            tv.deleteRows(at: [indexPath], with: .fade)



        }
    }
}

func tableView(_ tableView: UITableView, editActionsForRowAt: IndexPath) -> [UITableViewRowAction]? {

  let share = UITableViewRowAction(style: .normal, title: "Share") { action, index in
    //handle like delete button
    print("share button tapped")
  }

  share.backgroundColor = .lightGray

  let delete = UITableViewRowAction(style: .normal, title: "Delete") { action, index in
    self.nameArray.remove(at: editActionsForRowAt.row)
    self.swipeTable.beginUpdates()
    self.swipeTable.deleteRows(at: [editActionsForRowAt], with: .right)
    self.swipeTable.endUpdates()

    print("delete button tapped")
  }

  delete.backgroundColor = .orange
  return [share,delete]
}

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

@available(iOS 11.0, *)
    func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {

        let editAction = UIContextualAction.init(style: UIContextualAction.Style.normal, title: "Edit", handler: { (action, view, completion) in
            //TODO: Edit
            completion(true)
            self.popUpViewPresent(index:indexPath.row)
        })

        let deleteAction = UIContextualAction.init(style: UIContextualAction.Style.destructive, title: "Delete", handler: { (action, view, completion) in
            //TODO: Delete
            completion(true)
            self.deleteTagAction(senderTag:indexPath.row)
        })
        editAction.image = UIImage(named: "Edit-white")
        deleteAction.image = UIImage(named: "Delete-white")
        editAction.backgroundColor = UIColor.gray
        deleteAction.backgroundColor = UIColor.red

        let config = UISwipeActionsConfiguration(actions: [deleteAction, editAction])
        config.performsFirstActionWithFullSwipe = false
        return config
    }

Swift 5

Como UITableViewRowAction foi descontinuado no iOS 13.0, você pode usar UISwipeActionsConfiguration

   func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
        let deleteAction = UIContextualAction(style: .destructive, title: "Delete") {  (contextualAction, view, boolValue) in
            self.deleteData(at: indexPath)
        }

        let editAction = UIContextualAction(style: .normal, title: "Edit") {  (contextualAction, view, boolValue) in
            self.editData(at: indexPath)
        }
        editAction.backgroundColor = .purple
        let swipeActions = UISwipeActionsConfiguration(actions: [deleteAction,editAction])

        return swipeActions
    }

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

    func deleteData(at indexPath: IndexPath) {
        print(indexPath.row)
    }

    func editData(at indexPath: IndexPath) {
        print(indexPath.row)
    }