Ios 如何限制UIPickerView组件

如何限制

UIPickerView

组件滚动

我在

UIPickeView

1秒组件结束滚动中有两个组件，允许用户触摸第一个组件以更改其中的值

如何限制用户触摸组件1，直到第二个组件滚动完成。

使用，您可以检查UIPickerView是否滚动。根据滚动，您可以启用/禁用与UIPickerView的交互

extension UIView {

    func isScrolling () -> Bool {

        if let scrollView = self as? UIScrollView {
            if (scrollView.isDragging || scrollView.isDecelerating) {
                return true
            }
        }

        for subview in self.subviews {
            if subview.isScrolling() {
                return true
            }
        }
        return false
    }
}

UIPickerViewDelegate以检测是否滚动

func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {

    if pickerView.isScrolling() {
        pickerView.isUserInteractionEnabled = false
    } else {
        pickerView.isUserInteractionEnabled = true
    }

    //Use this for reduce lines
    //pickerView.isUserInteractionEnabled = !pickerView.isScrolling()

    return "Row \(row)"
}

func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
    pickerView.isUserInteractionEnabled = true
}

唯一的问题是你不能触摸当前的滚动组件，直到组件完成滚动。希望有人也能解决这个问题

使用，可以检查UIPickerView是否正在滚动。根据滚动，您可以启用/禁用与UIPickerView的交互

extension UIView {

    func isScrolling () -> Bool {

        if let scrollView = self as? UIScrollView {
            if (scrollView.isDragging || scrollView.isDecelerating) {
                return true
            }
        }

        for subview in self.subviews {
            if subview.isScrolling() {
                return true
            }
        }
        return false
    }
}

UIPickerViewDelegate以检测是否滚动

func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {

    if pickerView.isScrolling() {
        pickerView.isUserInteractionEnabled = false
    } else {
        pickerView.isUserInteractionEnabled = true
    }

    //Use this for reduce lines
    //pickerView.isUserInteractionEnabled = !pickerView.isScrolling()

    return "Row \(row)"
}

func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
    pickerView.isUserInteractionEnabled = true
}

唯一的问题是你不能触摸当前的滚动组件，直到组件完成滚动。希望有人也能解决这个问题