增加iOS中的选择器大小 - Swift 4

Question

我有一个看起来像这样的SB

它产生了这个结果

我正在尝试增加我的选择器的字体。

关于这个最好的方法是什么？

这是我可以通过故事板设置实现的吗？

我有这个

extension ScreenTimeViewController : UIPickerViewDelegate, UIPickerViewDataSource {

    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 2
    }

    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return component == 0 ? 25 : 61
    }

    func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView {

        if view != nil {
            view?.layer.backgroundColor = UIColor.white.cgColor
            view?.layer.cornerRadius = (view?.bounds.width)! / 2

            return view!
        } else {

            let newView = UIView(frame: CGRect(x: 0, y: 0, width: 110, height: 40))

            newView.layer.masksToBounds = false
            newView.layer.backgroundColor = UIColor.white.cgColor
            newView.layer.cornerRadius = newView.bounds.width / 2

            switch component {
            case 0:
                addLabel(in: newView, at: CGPoint(x: newView.bounds.minX + 20, y: newView.bounds.midY), text: "\(row)", color: .black)
            case 1:
                addLabel(in: newView, at: CGPoint(x: newView.bounds.minX + 20, y: newView.bounds.midY), text: "\(row)", color: .black)
            default:
                break
            }

            return newView
        }

    }

    func pickerView(_ pickerView: UIPickerView, widthForComponent component: Int) -> CGFloat {
        return 110
    }

    func pickerView(_ pickerView: UIPickerView, rowHeightForComponent component: Int) -> CGFloat {
        return 50
    }


}

Answer 1

虽然你可以在某种程度上自定义选择器的颜色但是对于字体，如果你想要一个高度可定制的选择器，则没有可能的选项可以参考github项目

https://github.com/mithyer/DatePicker-Swift

https://github.com/itsmeichigo/DateTimePicker