Question

我有主View Controller，应用程序的数据在哪里。这些数据，我需要发送到包含UIView并嵌套到他的UITableView的视图中。 UITableView负责显示弹出菜单，其中我的部分数据位于单元格中（特别是主题的标题）。

我尝试通过协议和委托来执行此操作，但未成功。也许我做错了什么，或者总的来说是不可能的，我需要寻找另一种出路？

要传递的数据

    fileprivate var themes = [
    Theme(name: "Halloween",
          emoji: ["", "", "", "☠️", "", "", "⚰️", "", "", "", "⚱️", "", "", "", "", "", "", ""],
          backgroundColor: #colorLiteral(red: 0, green: 0, blue: 0, alpha: 1),
          buttonColor: #colorLiteral(red: 1, green: 0.5763723254, blue: 0, alpha: 1)),
    Theme(name: "Sports",
          emoji: ["", "⚽️", "", "", "", "‍♂️", "‍♀️", "⛳️", "", "", "", "⛸", "", "", "", "", "‍♂️", "‍♂️"],
          backgroundColor: #colorLiteral(red: 0, green: 0, blue: 0, alpha: 1),
          buttonColor: #colorLiteral(red: 0.9686274529, green: 0.78039217, blue: 0.3450980484, alpha: 1)),
    Theme(name: "Flags",
          emoji: ["", "", "", "️‍", "", "", "", "", "", "", "", "", "", "", "", "", "", ""],
          backgroundColor: #colorLiteral(red: 0.05882352963, green: 0.180392161, blue: 0.2470588237, alpha: 1),
          buttonColor: #colorLiteral(red: 0.4745098054, green: 0.8392156959, blue: 0.9764705896, alpha: 1)),
    Theme(name: "Animals",
          emoji: ["", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", ""],
          backgroundColor: #colorLiteral(red: 0.3098039329, green: 0.2039215714, blue: 0.03921568766, alpha: 1),
          buttonColor: #colorLiteral(red: 0.9764705896, green: 0.850980401, blue: 0.5490196347, alpha: 1)),
    Theme(name: "Food",
          emoji: ["", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", ""],
          backgroundColor: #colorLiteral(red: 0.1294117719, green: 0.2156862766, blue: 0.06666667014, alpha: 1),
          buttonColor: #colorLiteral(red: 0.721568644, green: 0.8862745166, blue: 0.5921568871, alpha: 1)),
    Theme(name: "Gadgets",
          emoji: ["⌚️", "", "", "", "", "", "", "", "", "", "", "", "⏰", "", "", "⏲", "⌨️", ""],
          backgroundColor: #colorLiteral(red: 0.2549019754, green: 0.2745098174, blue: 0.3019607961, alpha: 1),
          buttonColor: #colorLiteral(red: 0.8039215803, green: 0.8039215803, blue: 0.8039215803, alpha: 1))
]

视图类

class DropDownView: UIView {

fileprivate var listOfThemes = ["1", "2", "3"] //test data

fileprivate struct Keys {

    static let cellIdentifier = "cell"

}

override init(frame: CGRect) {

    super.init(frame: frame)

}

required init?(coder aDecoder: NSCoder) {

    super.init(coder: aDecoder)

} }

extension DropDownView: UITableViewDelegate, UITableViewDataSource {

fileprivate func numberOfSections(in tableView: UITableView) -> Int {

    return 1

}

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

    return listOfThemes.count

}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

    let cell = tableView.dequeueReusableCell(withIdentifier: Keys.cellIdentifier, for: indexPath)

    cell.textLabel?.text = listOfThemes[indexPath.row]

    return cell

}

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {

    tableView.deselectRow(at: indexPath, animated: true)

} }

Answer 1

有几种方法可以实现此目的，但在这种情况下，以下内容似乎很容易实现：

在您的DropDownView类中，声明listOfThemes数组，如下所示：

var listOfThemes: [Theme]!

然后在您的mainVC中初始化DropDownView时，在显示视图之前执行以下操作：

fileprivate var dropDownView = DropDownView()
dropDownView.listOfThemes = themes // themes are the themes from your main VC
// now present it.

将数据从View Controller传递到View

1 个答案: