Pass value to next view when label in Table view cell is tapped - ios

Question

would love to pass the value postArray[indexpath.row].creatorId when the label inside a tableview cell is tapped so it can be passed onto the next view controller so i can load the profile of that particular creator/user. I used custom cells, so how do i get the creator id based on the location of the label(username) selected.
//custom cell
class PostCell : UITableViewCell
{
#IBOutlet weak var timeAgoLabel: UILabel!
#IBOutlet weak var usernameLabel: UILabel!
#IBOutlet weak var profileImageView: UIImageView!
#IBOutlet weak var postImageView: UIImageView!
#IBOutlet weak var captionLabel: UILabel!
#IBOutlet weak var postStatsLabel: UILabel!
}
//do something when label is tapped
#objc func tapFunction(sender:UITapGestureRecognizer) {
//userClicked = creatorData
print(userClicked)
appDelegate.profileView()
print("tap working")
}
override func numberOfSections(in tableView: UITableView) -> Int {
return 2
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if section == 0{
return 1
}else{
return postsArray.count
}
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
//var returnCell: UITableViewCell!
if indexPath.section == 0 {
let cell = tableView.dequeueReusableCell(withIdentifier: "statusCell", for: indexPath) as! statusCell
profilePicture = UserDefaults.standard.object(forKey: "userPic") as? String
if profilePicture != nil {
//load profile picture from library
let urlString = "https://test.com/uploads/profile-picture/"+(profilePicture)!
let profileURL = URL(string: urlString)
cell.statusProfilePic?.downloadedFrom(url: profileURL!)
} else {
print("you have no profile picture set")
}
return cell
} else {
if postsArray[indexPath.row].photos != nil{
let cell = tableView.dequeueReusableCell(withIdentifier: "PostCell", for: indexPath) as! PostCell
if postsArray[indexPath.row].comments != nil {
comments = postsArray[indexPath.row].comments?.count
} else {
comments = 0
}
if postsArray[indexPath.row].like_list != nil {
likes = postsArray[indexPath.row].like_list?.count
}else{
likes = 0
}
//assign post id to PostID
postID = postsArray[indexPath.row].post_id
//make username clickable!
let tap = UITapGestureRecognizer(target: self, action: #selector(NewsfeedTableViewController.tapFunction))
cell.usernameLabel.isUserInteractionEnabled = true
cell.usernameLabel.addGestureRecognizer(tap)
cell.usernameLabel.text = postsArray[indexPath.row].fullname
cell.timeAgoLabel.text = postsArray[indexPath.row].data_created
cell.captionLabel.text = postsArray[indexPath.row].content
cell.timeAgoLabel.text = postsArray[indexPath.row].modified
//15 Likes 30 Comments 500 Shares
cell.postStatsLabel.text = "\(likes!) Likes \(comments!) Comments"
//load profile picture from library
let urlString = "https://test.com/uploads/profile-picture/"+(postsArray[indexPath.row].profile_pic_filename)!
let profileURL = URL(string: urlString)
cell.profileImageView.downloadedFrom(url: profileURL!)
//iterate through posts images images array
//load post picture from server library
var postImageName : String?
if postsArray[indexPath.row].photos != nil{
let postImage = postsArray[indexPath.row].photos
for postsImage in postImage!{
postImageName = postsImage.filename!
}
let urlPostImageString = "https://test.com/uploads/post-picture/"+(postImageName)!
let postsImageUrl = URL(string: urlPostImageString)
cell.postImageView.downloadedFrom(url: postsImageUrl!)
} else {
print("Post has no picture")
}
//return cell
return cell
} else {
let cell = tableView.dequeueReusableCell(withIdentifier: "NoImageCell", for: indexPath) as! NoImageTableViewCell
if postsArray[indexPath.row].comments != nil {
comments = postsArray[indexPath.row].comments?.count
} else {
comments = 0
}
if postsArray[indexPath.row].like_list != nil {
likes = postsArray[indexPath.row].like_list?.count
} else {
likes = 0
}
//make username clickable!
let tap = UITapGestureRecognizer(target: self, action: #selector(NewsfeedTableViewController.tapFunction))
cell.noImageUsername.isUserInteractionEnabled = true
cell.noImageUsername.addGestureRecognizer(tap)
cell.noImageUsername.text = postsArray[indexPath.row].fullname
cell.noImageTime.text = postsArray[indexPath.row].data_created
cell.noImagePost.text = postsArray[indexPath.row].content
cell.noImageTime.text = postsArray[indexPath.row].modified
//15 Likes 30 Comments 500 Shares
cell.noImageLikeAndComment.text = "\(likes!) Likes \(comments!) Comments"
//load profile picture from library
let urlString = "https://test.com/uploads/profile-picture/"+(postsArray[indexPath.row].profile_pic_filename)!
let profileURL = URL(string: urlString)
cell.noImageProfilePic.downloadedFrom(url: profileURL!)
return cell
}
}
}

Answer 1

Use this for example.
Implement didSelectRow() method and in it write something like this:
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
// this method works, when you taped cell. write here code of you need. Next code only example, which set user info to some VC and push it:
let controller = UserController as? UserController
if let controller = controller {
controller.user = users[indexPath.row]
self.navigationController?.pushViewController(controller, animated: true)
}
}
add this to your Cell's class:
func setTap() {
let tap = UITapGestureRecognizer(target: self, action: #selector(tapRecognized))
self.label.addGestureRecognizer(tap)
tap.numberOfTapsRequired = 1
}
#objc func tapRecognized(sender: UITapGestureRecognizer) {
// here your code of tap on label
print("label tapped")
}
Check on storyBoard is your label isUserInteractionEnabled? - set it to true. Inside tapRecodnized() method do what are you need. And you need to call method setTap() in your cell's method, which you call in tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell.
Update
Simple example. this code know what are you tapped. if you tap cell, but not label, add code of push some controller, else code of push another controller.
Cell's Class:
class MyTableViewCell: UITableViewCell {
#IBOutlet weak var label: UILabel!
var mainController: ViewController?
func setText(text: String) {
setTap()
label.text = text
}
func setTap() {
let tap = UITapGestureRecognizer(target: self, action: #selector(tapRecognized))
self.label.addGestureRecognizer(tap)
tap.numberOfTapsRequired = 1
}
#objc func tapRecognized(sender: UITapGestureRecognizer) {
if let mainController = mainController {
print("label tapped")
mainController.pushSomeVc(cell: self)
}
}
}
Code of main Class:
class ViewController: UIViewController {
#IBOutlet weak var myTableView: UITableView!
var array = ["1", "2", "3", "4", "5", "6"]
override func viewDidLoad() {
super.viewDidLoad()
}
func pushSomeVc(cell: MyTableViewCell) {
let row = myTableView.indexPath(for: cell)?.row
if let row = row {
// write here code of push controller, when label tapped. row property for get some user from array
print("push some vc with \(row)")
}
}
}
extension ViewController: UITableViewDelegate, UITableViewDataSource {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return array.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = myTableView.dequeueReusableCell(withIdentifier: "cell") as? MyTableViewCell
if let cell = cell {
cell.setText(text: array[indexPath.row])
cell.mainController = self
}
return cell ?? UITableViewCell()
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
tableView.deselectRow(at: indexPath, animated: false)
// write here code of push controller with comments
print("cell tapped: \(indexPath.row)")
}
}
I tested this code and it's work perfect