ios - 更改UIPickerView的标签

我正在尝试更改UIPickerView的字体。

func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusingView view: UIView!) -> UIView {
    let label = UILabel()

    label.font = UIFont(name:"SynchroLetPlain", size:20)
    //label.font = UIFont.systemFont(ofSize: 17) //Even I use systemFont, it doesn't show nothing
    return label
}

可以编译，但不显示任何文本。

哪里不同？我检查了SynchroLetPlain是否包含在项目中。

最佳答案

试试这个

func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView {
        var label: UILabel
        if let view = view as? UILabel {
            label = view
        } else {
            label = UILabel()
        }
        label.font = UIFont(name:"SynchroLetPlain", size:20)
        // where data is an Array of String
        label.text = "" // set data here
        return label

    }

另外:

func printFonts()
    {
        for fontFamilyName in UIFont.familyNames {
            print("-- \(fontFamilyName) --", terminator: "")
            for fontName in UIFont.fontNames(forFamilyName: fontFamilyName ) {
                print(fontName)
            }
            print(" ", terminator: "")
        }
    }

调用此函数，该函数为您提供设置字体所必须使用的字体的确切名称。

关于ios - 更改UIPickerView的标签，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/44157801/