In my app I use swipe gesture but when I add more items my app crashes and swipe gesture doesn't work. I don't know what to do. In my view controller I have
class controller: UIViewController, UITableViewDelegate, UITableViewDataSource {
var array = [AnyObject]()
var check = false
@IBOutlet weak var tableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
var rightButton : UIBarButtonItem = UIBarButtonItem(image: UIImage(named: "edit"), style: UIBarButtonItemStyle.Done, target: self, action: "editClicked")
self.editing = !self.editing
rightButton.tintColor = UIColor.whiteColor()
self.navigationItem.rightBarButtonItem = rightButton
var leftButton : UIBarButtonItem = UIBarButtonItem(image: UIImage(named: "settings"), style: UIBarButtonItemStyle.Plain, target: self, action: "settingsClicked")
leftButton.tintColor = UIColor.whiteColor()
self.navigationItem.leftBarButtonItem = leftButton
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return array.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell: CustomCell = tableView.dequeueReusableCellWithIdentifier("Cell") as! CustomCell
let object = array[indexPath.row] as! NSString
cell.editCell(object, delete: check)
cell.button.addTarget(self, action: "deleteClicked", forControlEvents : UIControlEvents.TouchUpInside)
return cell
}
here is the function I use to add items
func addClicked () {
check = true
var alert = UIAlertController(title: "add", message: "", preferredStyle: UIAlertControllerStyle.Alert)
alert.addTextFieldWithConfigurationHandler({ (textField) -> Void in textField.text = ""
})
alert.addAction(UIAlertAction(title: "confirm", style: .Default, handler: { (action) -> Void in
let textField = (alert.textFields![0] as! UITextField).text as String
if textField != "" {
self.array.insert(textField, atIndex: 0)
let indexPath = NSIndexPath(forRow: 0, inSection: 0)
self.tableView.insertRowsAtIndexPaths([indexPath], withRowAnimation: .Automatic)
}
}))
alert.addAction(UIAlertAction(title: "cancel", style: .Cancel, handler: {
(ACTION) -> Void in
}))
self.presentViewController(alert, animated: true, completion: nil)
self.tableView.reloadData()
}
and
class CustomCell: UITableViewCell {
@IBOutlet weak var label: UILabel!
@IBOutlet weak var view: UIView!
@IBOutlet weak var toBuy: UIImageView!
@IBOutlet weak var atHome: UIImageView!
@IBOutlet weak var button: UIButton!
var gesture, check: Bool!
override func awakeFromNib() {
super.awakeFromNib()
var leftSwipe = UISwipeGestureRecognizer(target: self, action: Selector("handleSwipes:"))
var rightSwipe = UISwipeGestureRecognizer(target: self, action: Selector("handleSwipes:"))
leftSwipe.direction = .Left
rightSwipe.direction = .Right
self.addGestureRecognizer(leftSwipe)
self.addGestureRecognizer(rightSwipe)
gesture = false;
check = false
}
func handleSwipes(sender:UISwipeGestureRecognizer) {
if (gesture == false) && (check == true){
if (sender.direction == .Left) {
gesture = true;
var labelPosition = CGPointMake(self.view.frame.origin.x - 55.0, self.view.frame.origin.y);
UIView.animateWithDuration(0.5, animations: {
self.view.frame = CGRectMake( labelPosition.x , labelPosition.y , self.view.frame.size.width, self.view.frame.size.height)
}, completion: { (value: Bool) in
self.gesture = false;
})
}
if (sender.direction == .Right) {
gesture = true;
var viewPosition = CGPointMake(self.view.frame.origin.x + 55.0, self.view.frame.origin.y);
UIView.animateWithDuration(0.5, animations: {
self.view.frame = CGRectMake( viewPosition.x , viewPosition.y , self.view.frame.size.width, self.view.frame.size.height)
}, completion: { (value: Bool) in
self.gesture = false;
})
}
}
}
override func setSelected(selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
}
I see MVC violation in your code. Please add the Swipe gesture handlers to your controller instead of your View(i.e) your Custom cell.
thus handlesSwipeMethod will move to "controller"