Why does my TableViewCell doesn't show other data-CodePudding

I intended to display data from my Firestore Database into my app using the TableViewCell. It supposed to show the bookTitle, bookAuthor and bookSummary but the bookAuthor does not show up. Below is my code.

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = UITableViewCell(style: .subtitle, reuseIdentifier: "cell")
        cell.accessoryType = .disclosureIndicator
        cell.textLabel?.text = books[indexPath.row].bookTitle
        cell.textLabel?.font = .systemFont(ofSize: 20, weight: .medium)
        cell.detailTextLabel?.text = books[indexPath.row].bookAuthor
        cell.detailTextLabel?.text = books[indexPath.row].bookSummary
        return cell
    }
    
    
    func setupTableView() {
        view.addSubview(tableView)
        tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell")
        tableView.allowsSelection = true
        tableView.isUserInteractionEnabled = true
        tableView.translatesAutoresizingMaskIntoConstraints = false
        tableView.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
        tableView.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true
        tableView.rightAnchor.constraint(equalTo: view.safeAreaLayoutGuide.rightAnchor).isActive = true
        tableView.leftAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leftAnchor).isActive = true
    }
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return books.count
    }

UI Screenshot

CodePudding user response：

You're setting the same label to bookAuthor and bookSummary here:

cell.detailTextLabel?.text = books[indexPath.row].bookAuthor
cell.detailTextLabel?.text = books[indexPath.row].bookSummary

So, it gets set to bookAuthor, and then immediately overwritten by bookSummary.

You could create/use another label for one of the fields, or concatenate the strings for this single label:

cell.detailTextLabel?.text = "\(books[indexPath.row].bookAuthor ?? "") - \(books[indexPath.row].bookSummary ?? "")"

CodePudding user response：

As You had used textLabel and detailTextLabel: It's used for giving label and a subtitle. You can't use detailTextLabel twice. So its overriding your bookAuthor by bookSummary.

Please try to write like this:-

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = UITableViewCell(style: .subtitle, reuseIdentifier: "cell")
    cell.accessoryType = .disclosureIndicator
    cell.textLabel?.text = books[indexPath.row].bookTitle
    cell.textLabel?.font = .systemFont(ofSize: 20, weight: .medium)
    cell.detailTextLabel?.text = books[indexPath.row].bookAuthor   "\n"   books[indexPath.row].bookSummary
    return cell
}