Question

我有一个带有按钮的自定义表格视图单元，该按钮可以在该单元的右上角按下。按下时，该按钮应显示一个操作表。

但是，每当我尝试按下按钮时，单元格都会在didSelectRow中执行操作，而不是显示操作表。好像按钮不可按下，但应该可以按下。这是课程：

class BulletinPostTableViewCell: UITableViewCell {

//MARK : VARIABLES

var tapAction: ((UITableViewCell) -> Void)?
@IBOutlet weak var title: UILabel!
@IBOutlet weak var descriptionTextView: UITextView!
@IBOutlet weak var userNameLabel: UILabel!
@IBOutlet weak var userProfilePicture: UIImageView!
@IBOutlet weak var bulletinImage: UIImageView!
@IBOutlet weak var dateLabel: UILabel!
@IBOutlet weak var optionsButton: UIButton!

@IBAction func optionsPressed(_ sender: Any) {
    tapAction?(self)
}


func customInit(titleText: String, descriptionText: String, occupations: String){
    self.title.text = titleText
    self.descriptionTextView.text = descriptionText
}

override func layoutSubviews() {
    super.layoutSubviews()
}

override func awakeFromNib() {
    super.awakeFromNib()
}

override func setSelected(_ selected: Bool, animated: Bool) {
    super.setSelected(selected, animated: animated)
}

}

以下是使用自定义单元格笔尖的视图控制器：

class HomeTableViewController: UITableViewController, UITextViewDelegate, UISearchBarDelegate {

//MARK : VARIABLES
var refHandle: UInt!
var ref: DatabaseReference!
var bulletin: Bulletin!
var bulletinArray = [Bulletin]()
var userObject: User!
let contactPickerViewController = CNContactPickerViewController()
let messageViewController = MFMessageComposeViewController()
@IBOutlet weak var searchBarOutlet: UIBarButtonItem!

//MARK : CUSTOM VARIABLES (FOR TRANSITION)
var uid: String = ""
var customTitle: String = ""
var customImage: String = ""
var customUserName: String = ""
var customOccupations: String = ""
var customTimeStamp: String = ""
var customDescription: String = ""
var customUserImage: String = ""
var customLink: String?
var floatingActionButton = ButtonWithImage(type: .custom)
var occupations: [String] = []

//MARK : ACTIONS
@IBAction func searchButtonPressed(_ sender: Any) {
    //-- create a search button and then present it
    let searchController = UISearchController(searchResultsController: nil)

    //-- set any properties (in this case, don't hide the nav bar and don't show the emoji keyboard option)
    searchController.hidesNavigationBarDuringPresentation = false
    searchController.searchBar.keyboardType = UIKeyboardType.asciiCapable

    //-- make this class the delegate and present the search
    searchController.searchBar.delegate = self
    present(searchController, animated: true, completion: nil)
}

override func viewDidLoad() {
    super.viewDidLoad()

    tableView.separatorStyle = .none

    fetchBulletins()
    getCurrentUser()


    //-- set table view heights
    tableView.delegate = self
    tableView.estimatedRowHeight = 60
    tableView.rowHeight = UITableView.automaticDimension

    //-- creates the nib for bulletin posts
    let bulletinNib = UINib(nibName: "BulletinPostTableViewCell", bundle: nil)
    tableView.register(bulletinNib, forCellReuseIdentifier: "newBulletinCell")

    tableView.reloadData()
}


func getCurrentUser(){
    let uid = Auth.auth().currentUser?.uid
    let db = Firestore.firestore()
    let docRef = db.collection("users").document(uid!)

    docRef.getDocument { (document, err) in
        if let dictionary = document?.data() {
            let user = User(dictionary: dictionary  as [String: AnyObject])
            user.id = document?.documentID
            self.userObject = user
        }
    }
}


override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "selectedBulletinTransition" {
        if let selectedView = segue.destination as? SelectedBulletinViewController {
            selectedView.bulletin = bulletin
        }
    }
}


//MARK : CUSTOM ACTIONS
func fetchBulletins(){
    let db = Firestore.firestore()

    db.collection("bulletins").getDocuments { (snapshot, err) in
        if let err = err {
            print("Error:\(err)")
        } else {
            for document in snapshot!.documents {
                var dictionary = document.data()
                let bulletin = Bulletin(dictionary: dictionary as [String: AnyObject])
                bulletin.id = document.documentID
                self.bulletinArray.insert(bulletin, at: 0)

                DispatchQueue.main.async {
                    self.tableView.reloadData()
                }
            }
        }
    }
}

func showAlertForRow(bulletin: Bulletin) {
    let alertController = UIAlertController(title: nil, message: nil, preferredStyle: .actionSheet)

    alertController.addAction((UIAlertAction(title: "Report", style: .default, handler: { (action) in
        print("complete")
    })))
    alertController.addAction((UIAlertAction(title: "Block", style: .default, handler: { (action) in
        print("complete")
    })))
    alertController.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))

    self.present(alertController, animated: true, completion: nil)
}



// MARK : TABLE VIEW METHODS
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return bulletinArray.count
}

override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    bulletin = bulletinArray[indexPath.row]
    self.performSegue(withIdentifier: "selectedBulletinTransition", sender: self)
}


override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let bulletin = self.bulletinArray[indexPath.row]
    let cell = tableView.dequeueReusableCell(withIdentifier: "newBulletinCell", for: indexPath) as! BulletinPostTableViewCell

    //-- set the properties for custom variables (title, description, occupations, image)
    self.customTitle = bulletin.bulletinTitle!
    self.customDescription = bulletin.bulletinDescription!
    self.customLink = bulletin.bulletinLink
    self.customUserName = bulletin.userName!

    cell.userNameLabel.text = bulletin.userName!

    if let userPicture = bulletin.userPhoto {
        let url = URL(string: userPicture)
        self.customUserImage = userPicture
        cell.userProfilePicture.kf.setImage(with: url)
        cell.userProfilePicture.layer.cornerRadius = 10
        cell.userProfilePicture.layer.masksToBounds = true
        cell.userProfilePicture.contentMode = .scaleAspectFill
    }

    //MARK: add action to cell button
    cell.tapAction = { (cell) in
        self.showAlertForRow(bulletin: bulletin)
    }

    //-- time
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "MM/dd/yy, h:mm a"
    let dateStamp = dateFormatter.date(from: bulletin.date)
    cell.dateLabel.text = dateStamp!.timeAgoDisplay()

    //-- if theres no description, don't show it.
    if bulletin.bulletinDescription == nil || bulletin.bulletinDescription == ""{
        cell.descriptionTextView.heightAnchor.constraint(equalToConstant: 0).isActive = true
    }

    //-- sets the properties for the cell image.
    if bulletin.bulletinImage == nil {
        cell.bulletinImage.heightAnchor.constraint(equalToConstant: 0).isActive = true
        cell.bulletinImage.translatesAutoresizingMaskIntoConstraints = false
        cell.customInit(titleText: bulletin.bulletinTitle!, descriptionText: String(bulletin.bulletinDescription!.prefix(180)) + "...", occupations: "")
        if let occupationArray = bulletin.occupations as? [String]{
            let occupationRepresentation = occupationArray.joined(separator: ", ")
        }
    } else {
        if let thisCustomImage = bulletin.bulletinImage {
            cell.customInit(titleText: bulletin.bulletinTitle!, descriptionText: String(bulletin.bulletinDescription!.prefix(90)) + "...", occupations: "")
            if let occupationArray = bulletin.occupations as? [String]{
                let occupationRepresentation = occupationArray.joined(separator: ", ")
            }
            self.customImage = thisCustomImage
            let url = URL(string: thisCustomImage)
            cell.bulletinImage.kf.setImage(with: url)
            cell.bulletinImage.contentMode = .scaleAspectFill
            cell.bulletinImage.layer.cornerRadius = 8.0
            cell.bulletinImage.layer.masksToBounds = true
            cell.bulletinImage.translatesAutoresizingMaskIntoConstraints = false
        }
    }


    return cell
}

}

Answer 1

检查故事板。 UIButton和Cell的ContentView之间的所有视图都需要将其UserInteractionEnabled设置为true。

Answer 2

尝试禁用表格视图单元格选择功能。

tableView.allowsSelection = false

按钮不可点击-自定义tableviewcell笔尖-Swift

2 个答案: