ios - 将 UIPickerView 行标题链接到新的 View Controller

Question

我有一个 UIPickerView，其中一些行每行都有一个标题。我想要的是，当单击一个标题时，会链接到一个特定于该标题的新 View Controller ，就像单击按钮将我带到一个新的 VC 一样。如何在选择器 View 中使用行标题来做到这一点？

我试图将特定行拖到 View Controller 中，但整个选择器被选中。

Answer 1

您可以设置pickerView委托(delegate)，然后可以推送viewController

示例代码:

class ViewController: UIViewController {

    @IBOutlet private weak var pickerView: UIPickerView!

    struct PickerData {
        let viewControllerId: String
        let storyboardId: String
        let title: String
    }

    private var pickersData: [PickerData] = []

    override func viewDidLoad() {
        super.viewDidLoad()
        loadData()
        pickerView.delegate = self
        pickerView.dataSource = self
    }

    private func loadData() {
        pickersData.append(
            ViewController.PickerData(viewControllerId: "ViewController1", storyboardId: "Main", title: "Foo")
        )
        pickersData.append(
            ViewController.PickerData(viewControllerId: "ViewController1", storyboardId: "Main", title: "Bar")
        )

    }

    private func createViewController(from index: Int) -> UIViewController {
        let model = pickersData[index]
        let viewController = UIStoryboard(name: model.storyboardId, bundle: nil).instantiateViewController(withIdentifier: model.viewControllerId)
        return viewController
    }

    private func pushViewController(viewController: UIViewController) {
        // If Navigation
        navigationController?.pushViewController(viewController, animated: true)

        // If present
        //present(viewController, animated: true, completion: nil)
    }

}
extension ViewController: UIPickerViewDataSource {
    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 1
    }

    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return pickersData.count
    }
    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        return pickersData[row].title
    }

}
extension ViewController: UIPickerViewDelegate {
    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
        pushViewController(viewController: createViewController(from: row))
    }
}