本文介绍了如何在 Swift 中转换 @Binding的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
In swift I can cast an Int to a Double with Int(doubleVariable).
But how can I cast a Binding < Double > to a Binding < Int > ?
Then I could pass an @Binding var intVar: Int to a function requiring a Double binding.
(The context of this is that I have an Int which I want to pass to a Slider in SwiftUI.)
解决方案
I don’t think there’s a way to cast but you can create another Binding based on the first one:
import SwiftUI
var d = 1.0
// Create a Binding<Double> (for lack of another source)
var bd = Binding<Double>(get: { d }, set: { d = $0 })
// "Convert" to Binding<Int> by recreating another Binding
let bi = Binding<Int>(get: { Int(bd.wrappedValue) },
set: { bd.wrappedValue = Double($0) })
这篇关于如何在 Swift 中转换 @Binding的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！
本站部分内容来源互联网,如果有图片或者内容侵犯您的权益请联系我们删除！