swift - WKInterfacePicker 标题

Question

您知道如何向 watchOS 选择器添加静态字幕吗？标题看起来像这样，上面写着Item 1.

我已经在 Interface Builder 中选择了合适的样式:

我的代码:

override func awakeWithContext(context: AnyObject?) {
    super.awakeWithContext(context)

    let item1 = WKPickerItem()
    item1.title = "10"
    let item2 = WKPickerItem()
    item2.title = "20"
    let item3 = WKPickerItem()
    item3.title = "30"
    picker.setItems([item1, item2, item3])

    picker.focus()
}

我在模拟器中得到的结果:

如何在选择器顶部添加缺失的标题？

Answer 1

您应该为每个 WKPickerItem 提供一个标题:

let item1 = WKPickerItem()
item1.title = "10"
item1.caption = "CAPTION!"