get the clicked imageview swift - ios

Question

I want to know which imageview was clicked by the user I am using the following code, but it is not calling the leftTapView and rightTapView functions
class CustomTableViewCell : UITableViewCell {
#IBOutlet var leftTeamImage: UIImageView!
#IBOutlet var rightTeamImage: UIImageView!
#IBOutlet var rightTeamNameLabel: UILabel!
#IBOutlet var leftTeamNameLabel: UILabel!
#IBOutlet var leftTeamScoreLabel: UILabel!
#IBOutlet var rightTeamScoreLabel: UILabel!
#IBOutlet var leftView : UIView!
#IBOutlet var rightView : UIView!
let lettTapRec = UITapGestureRecognizer()
let rightTapRec = UITapGestureRecognizer()
ScoreLabel.text = leftTeamScore
rightTeamNameLabel.text = rightTeamName.uppercaseString
rightTeamScoreLabel.text = rightTeamScore
}
func load(#leftTeamName: String, rightTeamName: String, leftTeamScore: Int, rightTeamScore: Int) {
leftTeamNameLabel.text = leftTeamName.uppercaseString
leftTeamScoreLabel.text = String(leftTeamScore)
rightTeamNameLabel.text = rightTeamName.uppercaseString
rightTeamScoreLabel.text = String(rightTeamScore)
lettTapRec.addTarget(self, action: "leftTapView")
leftView.userInteractionEnabled = true
leftView.addGestureRecognizer(lettTapRec)
//
rightTapRec.addTarget(self, action: "rightTapView")
rightView.userInteractionEnabled = true
rightView.addGestureRecognizer(rightTapRec)
}
func leftTapView(sender: AnyObject){
println("left")
}
func rightTapView(sender: AnyObject){
println("left")
}
}
protocol ImageTappedProtocols {
func leftImageTapped(imageView : UIImage)
func rightImageTapped(imageView: UIImage)
}
class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
#IBOutlet var tableView : UITableView!
var items: [(String, String)] = [
("My", "swift 1.jpeg"),
("Name", "swift 2.jpeg"),
("is", "swift 3.jpeg"),
("Atif", "swift 4.jpeg"),
("Farrukh", "swift 5.jpeg")
]
var team1 :[String] = []
var team2 :[String] = []
var id : [String] = []
var team1_bets : [Int] = []
var team2_bets : [Int] = []
var end_date : [String] = []
var list = Dictionary<String, String>()
var count : Int = 0
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return count;
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell:CustomTableViewCell = self.tableView.dequeueReusableCellWithIdentifier("customCell") as CustomTableViewCell
// this is how you extract values from a tuple
var (title, image) = items[indexPath.row]
var teama: String = team1[indexPath.row]
var teamb: String = team2[indexPath.row]
var teamAScore : Int = team1_bets[indexPath.row]
var teamBScore : Int = team2_bets[indexPath.row]
cell.backgroundColor = UIColor(red: 123, green: 225, blue: 38, alpha: 0.2)
return cell
}
func tableView(tableView : UITableView, didSelectedRowAtIndexPath indexPath : NSIndexPath){
//tableView.deselectRowAtIndexPath(indexPath, animated: true)
println("You selected cell #\(indexPath.row)!")
let indexPath = tableView.indexPathForSelectedRow();
let currentCell = tableView.cellForRowAtIndexPath(indexPath!) as UITableViewCell!;
println(currentCell.textLabel.text)
}
func tableView(tableView : UITableView, didSelectRowAtIndexPath indexPath : NSIndexPath){
//tableView.deselectRowAtIndexPath(indexPath, animated: true)
println("You selected cell #\(indexPath.row)!")
let indexPath = tableView.indexPathForSelectedRow();
let currentCell = tableView.cellForRowAtIndexPath(indexPath!) as UITableViewCell!
println(currentCell.contentView)
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
let urlAsString = "http://codespikestudios.com/betting_app/bet/get_events/1"
//let urlAsString = "http://api.topcoder.com/v2/challenges?pageSize=2"
let url: NSURL = NSURL(string: urlAsString)!
let urlSession = NSURLSession.sharedSession()
//2
let jsonQuery = urlSession.dataTaskWithURL(url, completionHandler: { data, response, error -> Void in
if (error != nil) {
println(error.localizedDescription)
}
var err: NSError?
// 3
var jsonResult = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers, error: &err) as NSArray
if (err != nil) {
println("JSON Error \(err!.localizedDescription)")
}
// 4
println(jsonResult)
println(jsonResult.count)
println(jsonResult[1].valueForKey("cat_name") as String)
var dictionary = Dictionary<String, String>()
self.count = jsonResult.count
for var i = 0; i < self.count; i++ {
self.team1 = jsonResult.valueForKey("team1") as Array
self.team2 = jsonResult.valueForKey("team2") as Array
self.team1_bets = jsonResult.valueForKey("team1_bets") as Array
self.team2_bets = jsonResult.valueForKey("team2_bets") as Array
}
dispatch_async(dispatch_get_main_queue(), { () -> Void in
self.tableView.reloadData()
})
//let jsonDate: String! = jsonResult["date"] as NSString
//let jsonTime: String! = jsonResult["time"] as NSString
//println(jsonTime)
})
// 5
jsonQuery.resume()
var nib = UINib(nibName: "MyTableViewCell", bundle: nil)
tableView.registerNib(nib, forCellReuseIdentifier: "customCell")
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
this is all I get
You selected cell #3!
<UITableViewCellContentView: 0x7f871b687350; frame = (0 0; 580 136.5); opaque = NO; gestureRecognizers = <NSArray: 0x7f871b68c180>; layer = <CALayer: 0x7f871b687420>>

Answer 1

You will want to add a target when you initialize your gesture recognizers. That would look like, for instance:
let leftTapRect = UIGestureRecognizer(target: self, action: "leftTapView:")
In addition, you will need to add a sender argument to your event handlers leftTapView and rightTapView:
func leftTapView(sender: AnyObject) {
...
}

Answer 2

solved my problem, Actually i had set my view's alpha to 0, when I set it to 1 and made the set the background as Clear Colour it started working. Rest the working perfectly. If someone can explain the reason of why setting alpha doesnt trigger the tap gesture I will gladly accept hi/her answer as accepted.

Answer 3

A view with an alpha of 0.0 won't receive touch events.
From the Event Handling guide:
"Note that a view also does not receive touch events if it’s hidden or transparent."
From the Creating Views documentation:
"A hidden view does not receive touch events from the system."