将rx.value添加到我的CustomView

教父

可以说我有一个带有值的CustomView。我想使用rx.value（Observable）向世界展示该值，而不是必须通过值（Int）来访问它。

final class CustomView: UIView {
   var value: Int = 0
   ...
}

我从UIStepper + Rx复制了此代码：

extension Reactive where Base: CustomView {

    var value: ControlProperty<Int> {
        return base.rx.controlProperty(editingEvents: [.allEditingEvents, .valueChanged],
            getter: { customView in
                customView.currentValue
        }, setter: { customView, value in
            customView.currentValue = value
        }
        )
    }

}

final class CustomView: UIControl {

    fileprivate var currentValue = 1 {
        didSet {
            checkButtonState()
            valueLabel.text = currentValue.description
        }
    }

   // inside i set currentValue = 3
}

但是customView.rx.value不会发出任何值

埃夫格尼（Evghenii Nicolaev）

缺少的是，您需要在发送操作UIControl。检查下一个示例：

class CustomView: UIControl {
    var value: Int = 0 {
        didSet { sendActions(for: .valueChanged) } // You are missing this part
    }
}

extension Reactive where Base: CustomView {

    var value: ControlProperty<Int> {
        return base.rx.controlProperty(editingEvents: UIControlEvents.valueChanged,
                                       getter: { customView in
                                        return customView.value },
                                       setter: { (customView, newValue) in
                                        customView.value = newValue})
    }

}

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