我是 swift 新手。我正在使用子標題以編程方式創建表格視圖單元格。我定義了兩個標簽和兩個函式來獲取值表單 API 并將其顯示到標簽控制元件中,但問題是標簽的值顯示到正確的位置。我想顯示標題,然后標題下方是子標題值。這是螢屏截圖。
這是代碼表視圖單元格。
extension ViewController: UITableViewDataSource{
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return viewModel.rovers.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
guard let cell = tableView.dequeueReusableCell(withIdentifier: StoryCell.identifier , for: indexPath) as? StoryCell
else{ return UITableViewCell()}
let row = indexPath.row
let title = viewModel.getTitle(by: row)
cell.configureCell(title:title)
let Id = viewModel.getId(by: row)
cell.configureCell(Id: Id)
return cell
}
}
這是配置標簽的代碼。
import UIKit
class StoryCell: UITableViewCell {
static let identifier = "StoryCell"
private lazy var storyTitleLabel: UILabel = {
let label = UILabel()
label.translatesAutoresizingMaskIntoConstraints = false
label.numberOfLines = 0
label.textAlignment = .left
return label
}()
private lazy var storyIdLabel: UILabel = {
let label = UILabel()
label.translatesAutoresizingMaskIntoConstraints = false
label.numberOfLines = 0
label.textAlignment = .left
return label
}()
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
setUpUI()
setUpUIID()
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func configureCell(title: String) {
storyTitleLabel.text = "Status :\(title)"
}
func configureCell(Id: Int) {
storyIdLabel.text = "Id: \(String(Id))"
}
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
private func setUpUI() {
contentView.addSubview(storyTitleLabel)
// constraints
let safeArea = contentView.safeAreaLayoutGuide
storyTitleLabel.topAnchor.constraint(equalTo: safeArea.topAnchor).isActive = true
storyTitleLabel.bottomAnchor.constraint(equalTo: safeArea.bottomAnchor).isActive = true
storyTitleLabel.leadingAnchor.constraint(equalTo: safeArea.leadingAnchor).isActive = true
storyTitleLabel.trailingAnchor.constraint(equalTo: safeArea.trailingAnchor).isActive = true
}
private func setUpUIID() {
contentView.addSubview(storyIdLabel)
// constraints
let safeArea = contentView.safeAreaLayoutGuide
storyIdLabel.topAnchor.constraint(equalTo: safeArea.topAnchor).isActive = true
storyIdLabel.bottomAnchor.constraint(equalTo: safeArea.bottomAnchor).isActive = true
storyIdLabel.leadingAnchor.constraint(equalTo: safeArea.leadingAnchor).isActive = true
storyIdLabel.trailingAnchor.constraint(equalTo: safeArea.trailingAnchor).isActive = true
}
}
uj5u.com熱心網友回復:
我在下面的代碼檢查中做了一些更改。現在應該沒問題了。
private func setUpUI() {
contentView.addSubview(storyTitleLabel)
// constraints
let safeArea = contentView.safeAreaLayoutGuide
storyTitleLabel.topAnchor.constraint(equalTo: safeArea.topAnchor).isActive = true
storyTitleLabel.leadingAnchor.constraint(equalTo: safeArea.leadingAnchor).isActive = true
storyTitleLabel.trailingAnchor.constraint(equalTo: safeArea.trailingAnchor).isActive = true
}
private func setUpUIID() {
contentView.addSubview(storyIdLabel)
let safeArea = contentView.safeAreaLayoutGuide
storyIdLabel.topAnchor.constraint(equalTo: storyTitleLabel.topAnchor).constant = 5
storyIdLabel.bottomAnchor.constraint(equalTo: safeArea.bottomAnchor).isActive = true
storyIdLabel.leadingAnchor.constraint(equalTo: safeArea.leadingAnchor).isActive = true
storyIdLabel.trailingAnchor.constraint(equalTo: safeArea.trailingAnchor).isActive = true
}
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