突出显示时 barButtonItem 的字体会发生变化 swift 4.2

Question

我这里有一个 barbuttonItem：

  let doneBarButtonItem: UIBarButtonItem? = {
    let barButtonItem = UIBarButtonItem()
    barButtonItem.setTitleTextAttributes([
        NSAttributedString.Key.font : UIFont(name: "Avenir-Heavy", size: 12)!,
        NSAttributedString.Key.foregroundColor : UIColor.black,
        ], for: .normal)
    barButtonItem.title = "DONE"
    return barButtonItem
}()

然而当我按下它时，它变成了不同的字体。突出显示时更改字体的 属性 是什么？谢谢你。

Answer 1

barButtonItem.setTitleTextAttributes([
        NSAttributedString.Key.font : UIFont(name: "Avenir-Heavy", size: 12)!,
        NSAttributedString.Key.foregroundColor : UIColor.black,
        ], for: .highlighted) // This line