I am trying to make a like button in each of my tableview cells. When it is pressed, the button will change to "unlike". I was able to do this by creating an IBOutlet in my subclass and an IBAction Method in my tableviewcontroller class using sender.setTitle("unlike",forState: UIControlState.Normal). But when I click it, the method turns a bunch of other tableviewcell's button's to "unlike" as well, essentially duplicating the behavior of one cell. The way it does this is that it changes every other cell, so if I click the "like" button of 2 consecutive cells, all cells in the table view will turn to "unlike". Here is my code for the tableViewController:
class TableViewController: UIViewController,UITableViewDataSource,UITableViewDelegate {
@IBOutlet weak var tableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 30
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as TableViewCell
cell.tag = indexPath.row
cell.like.tag = indexPath.row
cell.like.addTarget(self, action: "handleLikes:", forControlEvents: .TouchUpInside)
return cell
}
@IBAction func handleLikes(sender: AnyObject){
println(sender.tag) // This works, every cell returns a different number and in order.
sender.setTitle("Pressed", forState: UIControlState.Normal)
}
And here is my code for the TableViewCell class:
class TableViewCell: UITableViewCell {
@IBOutlet weak var like: UIButton!
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
}
}
Also, This is unrelated, but if anyone reading this could tell me how I could improve my style and/or clarity of code, I would appreciate that as well.
UITableViewCells are reusable. This means that you must set the title to "unlike" or "like" for each cell. Easiest way, since I suppose you will be reading in data anyways, would be to create an array of Strings in your ViewController
Add this to your ViewController: var likes: [String]!
in ViewDidLoad: likes = [String](count: 20, repeatedValue: "like")
Note that the length should be based on the number of UITableViewCells that you will display.
Your cellForRowAtIndexPath:
func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell! {
let cell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as TableViewCell
cell.like.tag = indexPath.row
cell.like.addTarget(self, action: "handleLikes:", forControlEvents: .TouchUpInside)
cell.like.setTitle(likes[indexPath.row], forState: UIControlState.Normal)
return cell
}
handleLikes function:
func handleLikes(sender: AnyObject){
println(sender.tag) // This works, every cell returns a different number and in order.
if likes[sender.tag] == "like" {
likes[sender.tag] = "unlike"
}
else {
likes[sender.tag] = "like"
}
sender.setTitle(likes[sender.tag], forState: UIControlState.Normal)
}