ios - 如何在swift 4中将按钮放在表格 View Controller 的前面？

Question

这个问题在这里已经有了答案:





Add view over tableview (UITableViewController)

(7 个回答)


4年前关闭。




我有一个表格 View Controller ，对我来说唯一的方法是使用它，所以请不要告诉我使用 viewController 而不是 tableviewController 这是我添加按钮的代码，这个按钮显示在最后一个单元格中但是我想要当用户滚动 TableView 按钮位于屏幕底部而不移动

override func viewDidLoad() {
    super.viewDidLoad()


    let submitButton = UIButton(frame: CGRect(x: 5, y: view.frame.origin.y + view.frame.size.height, width: self.view.frame.width - 10 , height: 50))

    submitButton.backgroundColor = UIColor.init(red: 180/255, green: 40/255, blue: 56/255, alpha: 1.0)
    submitButton.setTitle("Submit", for: .normal)
    submitButton.titleLabel?.font = UIFont(name: "Arial", size: 15)
    submitButton.titleLabel?.textColor = .white
    submitButton.addTarget(self, action: #selector(submit), for: .touchUpInside)
    submitButton.layer.cornerRadius = 5
    view.addSubview(submitButton)

Answer 1

如果适合您的场景，请尝试此方法:

var submitButton = UIButton()

override func viewDidLoad() {
    super.viewDidLoad()


    submitButton.frame = CGRect(x: 5, y: view.frame.origin.y + view.frame.size.height, width: self.view.frame.width - 10 , height: 50)

    submitButton.backgroundColor = UIColor.init(red: 180/255, green: 40/255, blue: 56/255, alpha: 1.0)
    submitButton.setTitle("Submit", for: .normal)
    submitButton.titleLabel?.font = UIFont(name: "Arial", size: 15)
    submitButton.titleLabel?.textColor = .white
    submitButton.addTarget(self, action: #selector(submit), for: .touchUpInside)
    submitButton.layer.cornerRadius = 5
    self.view.window?.addSubview(submitButton)
}

但在这种情况下，您必须从 viewWillDisappear 中的 super View 中删除按钮。 :

override func viewWillDisappear(_ animated: Bool) {
    super.viewWillDisappear(animated)
    self. submitButton.removeFromSuperview()
}