Why can't I see my TableViewRowActions buttons (in swift)? - ios

Question

I would like to implements the swipe movement on all my cells in my tableview.
After reading 4 different tutorials, I don't understand why my action buttons don't appear : I can do the "swipe", I can see a blank space where the buttons supposed to be. Even my handlers are not called on click...
class RestaurantsViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
#IBOutlet weak var mTableView: UITableView!
private var restosList = [Restaurant]()
override func viewDidLoad() {
super.viewDidLoad()
self.mTableView.registerClass(UITableViewCell.self, forCellReuseIdentifier: "cell")
let url = "http://xxxxxxxxxx"
Alamofire.request(.GET, url, parameters: ["service" : "restaurants"])
.responseArray { (response: [Restaurant]?, error: NSError?) in
if let response = response {
for oneResto in response {
self.restosList.append(oneResto)
}
}
self.mTableView.reloadData()
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell:UITableViewCell = self.mTableView.dequeueReusableCellWithIdentifier("cell") as! UITableViewCell
cell.textLabel?.text = self.restosList[indexPath.row].nom
return cell
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.restosList.count
}
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
var alert:UIAlertView = UIAlertView()
alert.title = self.restosList[indexPath.row].description
alert.addButtonWithTitle("OK")
alert.show()
self.mTableView.deselectRowAtIndexPath(indexPath, animated: true)
}
func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [AnyObject]? {
let deleteClosure = { (action: UITableViewRowAction!, indexPath: NSIndexPath!) -> Void in
println("Delete closure called")
}
let moreClosure = { (action: UITableViewRowAction!, indexPath: NSIndexPath!) -> Void in
println("More closure called")
}
let deleteAction = UITableViewRowAction(style: .Default, title: "Delete", handler: deleteClosure)
let moreAction = UITableViewRowAction(style: .Normal, title: "More", handler: moreClosure)
return [deleteAction, moreAction]
}
func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
// Intentionally blank. Required to use UITableViewRowActions
}

Answer 1

Add the canEditRowAtIndexPath method to your view controller and return true.
I usually put my handler code in as a closure right into the parameter but I don't think that should make a difference.
Here's the code:
import UIKit
class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
var myItems = ["Item 1","Item 2","Item 3"]
#IBOutlet weak var myTable: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return myItems.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = UITableViewCell(style: UITableViewCellStyle.Default, reuseIdentifier: "cell")
cell.textLabel?.text = myItems[indexPath.row]
return cell
}
func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
return true
}
func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
// Okie dokie
}
func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [AnyObject]? {
let editAction = UITableViewRowAction(style: UITableViewRowActionStyle.Default, title: "Edit", handler: {
Void in
println("edit swipe")
})
let superAction = UITableViewRowAction(style: UITableViewRowActionStyle.Normal, title: "Super", handler: {
Void in
println("super swipe")
})
return [editAction, superAction]
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}

Answer 2

Try reload the table view data with this code.
self.tableView.reloadData()