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UIPickerView workaround for white background being set automatically when used as inputView of UITextField with keyboardAppearance set to .Dark.
class UIPickerViewWorkaround: UIPickerView {
override func respondsToSelector(aSelector: Selector) -> Bool {
if aSelector.description == "_appearanceContainer" {
return false
} else {
return super.respondsToSelector(aSelector)
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dungi commented Dec 15, 2017

Should be: responds(to aSelector: Selector!) for new Swift Version

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