在iOS中切换语言RTL时UIPickerView文本未居中对齐开发者社区

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func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView {
    let title = getPickerViewTitle(for: row)
    let label = UILabel(frame: CGRect(x: 0, y: 0, width: 300, height: 37))
    label.text = title
    label.textAlignment = .center
    label.backgroundColor = UIColor.clear
    return label
}

 func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView {
            var pickerLabel : UILabel
            if let label = view as? UILabel {
                pickerLabel = label
            } else {
                pickerLabel = UILabel()
                pickerLabel.textColor = UIColor.black
                if  pickerLabel.effectiveUserInterfaceLayoutDirection == .rightToLeft {
                    pickerLabel.textAlignment = NSTextAlignment.center
            pickerLabel.text = "10"
            pickerLabel.sizeToFit()
            return pickerLabel
        }

func pickerView(pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusingView view: UIView!) -> UIView
    var pickerLabel = UILabel()

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