📅  最后修改于: 2023-12-03 15:25:39.344000             🧑  作者: Mango
如果您正在开发 iOS 应用程序并且需要在用户界面中显示一个中心标签,那么您可能需要使用 快速中心标签(Quick Center Tab) 。它是一个非常易于使用的自定义控件,可以在不影响其他 UI 元素的情况下快速显示和隐藏一个标签。
要使用快速中心标签,请按照以下步骤进行操作:
class QuickCenterTabViewController: UIViewController {
// add code here
}
class QuickCenterTabViewController: UIViewController {
lazy var quickCenterTabButton: UIButton = {
let button = UIButton(type: .system)
button.frame = CGRect(x: 0, y: 0, width: 60, height: 60)
button.backgroundColor = .red
button.layer.cornerRadius = button.frame.height / 2
button.layer.masksToBounds = true
button.setTitle("✚", for: .normal)
button.setTitleColor(.white, for: .normal)
button.addTarget(self, action: #selector(quickCenterTabButtonPressed(_:)), for: .touchUpInside)
return button
}()
override func viewDidLoad() {
super.viewDidLoad()
view.addSubview(quickCenterTabButton)
}
@objc func quickCenterTabButtonPressed(_ sender: UIButton) {
// add code here
}
}
class QuickCenterTabViewController: UIViewController {
lazy var quickCenterTabButton: UIButton = {
let button = UIButton(type: .system)
button.frame = CGRect(x: 0, y: 0, width: 60, height: 60)
button.backgroundColor = .red
button.layer.cornerRadius = button.frame.height / 2
button.layer.masksToBounds = true
button.setTitle("✚", for: .normal)
button.setTitleColor(.white, for: .normal)
button.addTarget(self, action: #selector(quickCenterTabButtonPressed(_:)), for: .touchUpInside)
return button
}()
private let quickCenterTabHeight: CGFloat = 200
lazy var quickCenterTabView: UIView = {
let view = UIView(frame: CGRect(x: 0, y: view.frame.height, width: view.frame.width, height: quickCenterTabHeight))
view.backgroundColor = .white
return view
}()
var isQuickCenterTabVisible = false
override func viewDidLoad() {
super.viewDidLoad()
view.addSubview(quickCenterTabButton)
view.addSubview(quickCenterTabView)
}
@objc func quickCenterTabButtonPressed(_ sender: UIButton) {
isQuickCenterTabVisible.toggle()
UIView.animate(withDuration: 0.3) { [weak self] in
guard let self = self else { return }
self.quickCenterTabView.frame.origin.y = self.isQuickCenterTabVisible ? self.view.frame.height - self.quickCenterTabHeight : self.view.frame.height
}
}
}
要使用快速中心标签,请按照以下步骤进行操作:
let quickCenterTabViewController = QuickCenterTabViewController()
navigationController?.pushViewController(quickCenterTabViewController, animated: true)
lazy var quickCenterTabView: UIView = {
let view = UIView(frame: CGRect(x: 0, y: view.frame.height, width: view.frame.width, height: quickCenterTabHeight))
view.backgroundColor = .white
view.addSubview(tableView)
return view
}()
lazy var tableView: UITableView = {
let tableView = UITableView(frame: .zero, style: .plain)
tableView.register(UITableViewCell.self, forCellReuseIdentifier: "Cell")
tableView.delegate = self
tableView.dataSource = self
tableView.translatesAutoresizingMaskIntoConstraints = false
return tableView
}()
快速中心标签是一个非常方便的控件,可以让您快速显示和隐藏中心标签,并且可以定制其外观和行为。它非常易于使用,只需几行代码即可实现。如果您需要在用户界面中添加一个中心标签,请考虑使用快速中心标签。