无法转换 UIStackview 反应式和声明式类型的值 swift

Question

我正在尝试使 UIStackview 成为反应式和声明式的，正如我在此处的问题中所回答的那样但我现在遇到的问题是当我尝试绑定到 stackView 时，出现此错误 Cannot convert value of type '(_) -> (@escaping (Int, _.Element, UIView?) -> UIView) -> Disposable' to expected argument type '(Observable<[LandMarkData]?>) -> (_) -> _'

下面是我使用的代码

extension Reactive where Base: UIStackView {

    func items<Sequence: Swift.Sequence, Source: ObservableType>(_ source: Source) -> (_ viewForRow: @escaping (Int, Sequence.Element, UIView?) -> UIView) -> Disposable where Source.E == Sequence {
        return { viewForRow in
            return source.subscribe { event in
                switch event {
                case .next(let values):
                    let views = self.base.arrangedSubviews
                    let viewsCount = views.count
                    var valuesCount = 0
                    for (index, value) in values.enumerated() {
                        if index < viewsCount {
                            // update views that already exist
                            _ = viewForRow(index, value, views[index])
                        }
                        else {
                            // add new views if needed
                            let view = viewForRow(index, value, nil)
                            self.base.addArrangedSubview(view)
                        }
                        valuesCount = index
                    }
                    if valuesCount + 1 < viewsCount {
                        for index in valuesCount + 1 ..< viewsCount {
                            // remove extra views if necessary
                            self.base.removeArrangedSubview(views[index])
                            views[index].removeFromSuperview()
                        }
                    }
                case .error(let error):
                    fatalError("Errors can't be allowed: \(error)")
                case .completed:
                    break
                }
            }
        }
    }
}

在我的 Viewcontroller

var features: [LandMarkData] = [LandMarkData]()
var selectedFeatures: [LandMarkData] = [LandMarkData]()

    let stackFeature = UIStackView()
    var stv: CheckboxStackView?
    override func viewDidLoad() {
        super.viewDidLoad()
        view.backgroundColor = .white
        hideKeyboardWhenTappedAround()
        layout()
        logic()
        tableViewInit()

        self.stackFeature.axis = .vertical
        self.stackFeature.distribution = .fill
        self.stackFeature.spacing = 8

        let featured = NetworkAdapter.instance.getFeaturesAmeneities()
            .map { [=12=].data }
            .share(replay: 1)

        featured
            .bind(onNext: { [weak self] in self?.features.append(contentsOf: [=12=]!) })
            .disposed(by: disposeBag)


        featured
            .bind(to: stackFeature.rx.items) { (row, element, view) in
                let myView = (view as? CheckboxStackView) ?? CheckboxStackView()

                myView.label.text = element.name
                myView.checkBox.tag = element.id ?? 0
                return myView
            }
            .disposed(by: disposeBag)

    }

对我收到错误的任何帮助，感谢修复

Answer 1

问题是您在需要数组的地方传递了可选数组。

无法转换 UIStackview 反应式和声明式类型的值 swift

Cannot convert value of type in UIStackview reactive and declarative swift

ios

swift

rx-swift