How to change button title every time checkmark selected within custom cell - ios

Question

I have a viewcontroller that has a tableview and a button at the bottom. Within each cell is a radio button as a tapGesture. I would like to updated the button with the number of cells selected. If my gesture is in the custom cell and my button is in my viewcontroller how can I get the two to work together?
Custom cell:
class SearchTalentCell: UITableViewCell {
#IBOutlet weak var userProfileImage: UIImageView!
#IBOutlet weak var talentUserName: UILabel!
#IBOutlet weak var selectedImg: UIImageView!
#IBOutlet weak var inviteSentImg: UIImageView!
var prospectRef: FIRDatabaseReference!
var currentTalent: UserType!
func setTalent(talent: UserType) {
currentTalent = talent
currentTalent.userKey = talent.userKey
}
override func awakeFromNib() {
super.awakeFromNib()
let tap = UITapGestureRecognizer(target: self, action: #selector(selectTapped))
tap.numberOfTapsRequired = 1
selectedImg.addGestureRecognizer(tap)
selectedImg.isUserInteractionEnabled = true
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
func configureCell(user: UserType, img: UIImage? = nil) {
prospectRef = Cast.REF_PRE_PRODUCTION_CASTING_POSITION.child(ProjectDetailVC.currentProject).child(FIRDataCast.prospect.rawValue).child(CastingDetailVC.positionName).child(user.userKey)
setTalent(talent: user)
self.talentUserName.text = "\(user.firstName) \(user.lastName)"
prospectRef.observeSingleEvent(of: .value, with: { (snapshot) in
if let _ = snapshot.value as? NSNull {
self.inviteSentImg.isHidden = true
} else {
self.inviteSentImg.image = UIImage(named: "inviteSent")
self.inviteSentImg.isHidden = false
}
})
if UserType.selectedTalentForSearch.contains(currentTalent.userKey) {
selectedImg.image = UIImage(named: "radioSelected")
} else {
selectedImg.image = UIImage(named: "radioUnselected")
}
//Image Caching
if img != nil {
self.userProfileImage.image = img
} else {
if let imageURL = user.profileImage {
let ref = FIRStorage.storage().reference(forURL: imageURL)
ref.data(withMaxSize: 2 * 1024 * 1024, completion: { (data, error) in
if error != nil {
print("ZACK: Unable to download image from Firebase Storage")
} else {
print("ZACK: Image downloaded from Firebase Storage")
if let imgData = data {
if let img = UIImage(data: imgData) {
self.userProfileImage.image = img
SearchTalentVC.userProfileImageCache.setObject(img, forKey: imageURL as NSString)
}
}
}
})
}
}
}
#objc func selectTapped(sender: UITapGestureRecognizer) {
if UserType.selectedTalentForSearch.contains(currentTalent.userKey) {
selectedImg.image = UIImage(named: "radioUnselected")
UserType.selectedTalentForSearch = UserType.selectedTalentForSearch.filter{$0 != currentTalent.userKey}
print("Keys: \(UserType.selectedTalentForSearch)")
} else {
selectedImg.image = UIImage(named: "radioSelected")
UserType.selectedTalentForSearch.append(currentTalent.userKey)
print("Keys: \(UserType.selectedTalentForSearch)")
}
}
}
ViewController:
class SearchTalentVC: UIViewController, UITableViewDelegate, UITableViewDataSource {
#IBOutlet weak var tableView: UITableView!
#IBOutlet weak var sendInviteButton: UIButton!
var searchingRole = [Cast]()
var unfilteredTalent = [UserType]()
var filteredTalent = [UserType]()
var selectedTalent = [UserType]()
var matchingTalentUserKeys = [String]()
var isFiltered = false
var selectedCounter = [String]()
var prospectRef: FIRDatabaseReference!
static var userProfileImageCache: NSCache<NSString, UIImage> = NSCache()
let searchController = UISearchController(searchResultsController: nil)
override func viewDidLoad() {
super.viewDidLoad()
searchController.searchResultsUpdater = self
searchController.obscuresBackgroundDuringPresentation = false
searchController.searchBar.placeholder = "Search Talent"
searchController.searchBar.barStyle = .black
navigationItem.searchController = searchController
definesPresentationContext = true
searchController.searchBar.scopeButtonTitles = ["All", "Role Specific"]
searchController.searchBar.tintColor = UIColor.white
searchController.searchBar.delegate = self
searchController.searchResultsUpdater = self
self.sendInviteButton.setTitle("Send Invite to \(UserType.selectedTalentForSearch.count) Prospects", for: .normal)
getTalentProfiles()
}
Thank you for any help!

Answer 1

I'm not sure why you are using the cell selection inside the cell, as opposed to the tableview delegate function func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)?
If you use didSelectRowAt, you could have an array of selected rows and you can include the selectedRows.count into your button text.
Hope that helps!