我刚刚用它的新版本更新了我的旧答案，现在你可以在你的视图中使用 AdvancedSegmentedPicker，并像普通的 SegmentedPicker 一样使用它您可以更改和更新 SegmentedPicker 上的所有颜色，例如：
背景颜色
selectedSegmentTintColor
selectedSegmentForegroundColor
normalSegmentForegroundColor
你可以这样使用：
AdvancedSegmentedPicker(items:selectedItem:)
或者：
AdvancedSegmentedPicker(items:selectedItem:backgroundColor:selectedSegmentTintColor:selectedSegmentForegroundColor:normalSegmentForegroundColor:)
还请注意，只要您将 items 和 selectedItem 提供给 AdvancedSegmentedPicker，您可以在任何项目中使用它，也可以进行颜色自定义。
2.0.0 版：
import SwiftUI
struct ContentView: View {
var items: [ColorEnum] = ColorEnum.allCases
@State private var selectedItem: ColorEnum = ColorEnum.blue
@State private var backgroundColor: UIColor?
@State private var selectedSegmentTintColor: UIColor?
@State private var selectedSegmentForegroundColor: UIColor?
@State private var normalSegmentForegroundColor: UIColor?
var body: some View {
VStack(spacing: 30.0) {
AdvancedSegmentedPicker(items: items, selectedItem: $selectedItem, backgroundColor: backgroundColor, selectedSegmentTintColor: selectedSegmentTintColor,
selectedSegmentForegroundColor: selectedSegmentForegroundColor, normalSegmentForegroundColor: normalSegmentForegroundColor)
Text("You selected: " + selectedItem.rawValue)
.bold()
.shadow(radius: 10.0)
.padding()
Button("update backgroundColor") {
if backgroundColor == UIColor.gray { backgroundColor = nil }
else { backgroundColor = UIColor.gray }
}
Button("update selectedSegmentForegroundColor") {
if selectedSegmentForegroundColor == UIColor.white { selectedSegmentForegroundColor = nil }
else { selectedSegmentForegroundColor = UIColor.white }
}
Button("update normalSegmentForegroundColor") {
if normalSegmentForegroundColor == UIColor.white { normalSegmentForegroundColor = nil }
else { normalSegmentForegroundColor = UIColor.white }
}
}
.font(Font.body.bold())
.onAppear() { selectedSegmentTintColor = selectedItem.ColorValue }
.onChange(of: selectedItem) { newValue in selectedSegmentTintColor = newValue.ColorValue }
.padding()
.background(Color.black.opacity(0.1).cornerRadius(10.0))
.padding()
.statusBar(hidden: true)
}
}
struct AdvancedSegmentedPicker<T: CustomStringConvertible & Hashable>: View {
var items: [T]
@Binding var selectedItem: T
var backgroundColor: UIColor? = nil
var selectedSegmentTintColor: UIColor? = nil
var selectedSegmentForegroundColor: UIColor? = nil
var normalSegmentForegroundColor: UIColor? = nil
@State private var renderView: Bool = Bool()
var body: some View {
return Group {
if renderView { SegmentedPickerView(items: items, selectedItem: $selectedItem, backgroundColor: backgroundColor, selectedSegmentTintColor: selectedSegmentTintColor,
selectedSegmentForegroundColor: selectedSegmentForegroundColor, normalSegmentForegroundColor: normalSegmentForegroundColor) }
else { SegmentedPickerView(items: items, selectedItem: $selectedItem, backgroundColor: backgroundColor, selectedSegmentTintColor: selectedSegmentTintColor,
selectedSegmentForegroundColor: selectedSegmentForegroundColor, normalSegmentForegroundColor: normalSegmentForegroundColor) }
}
.onChange(of: backgroundColor) { _ in renderView.toggle() }
.onChange(of: selectedSegmentTintColor) { _ in renderView.toggle() }
.onChange(of: selectedSegmentForegroundColor) { _ in renderView.toggle() }
.onChange(of: normalSegmentForegroundColor) { _ in renderView.toggle() }
}
}
private struct SegmentedPickerView<T: CustomStringConvertible & Hashable>: View {
var items: [T]
@Binding var selectedItem: T
init(items: [T], selectedItem: Binding<T>, backgroundColor: UIColor? = nil,
selectedSegmentTintColor: UIColor? = nil, selectedSegmentForegroundColor: UIColor? = nil, normalSegmentForegroundColor: UIColor? = nil) {
self.items = items
self._selectedItem = selectedItem
UISegmentedControl.appearance().backgroundColor = backgroundColor
UISegmentedControl.appearance().selectedSegmentTintColor = selectedSegmentTintColor
if let unwrappedSelectedSegmentForegroundColor: UIColor = selectedSegmentForegroundColor {
UISegmentedControl.appearance().setTitleTextAttributes([.foregroundColor: unwrappedSelectedSegmentForegroundColor], for: .selected)
}
else {
UISegmentedControl.appearance().setTitleTextAttributes([.foregroundColor: UIColor.label], for: .selected)
}
if let unwrappedNormalSegmentForegroundColor: UIColor = normalSegmentForegroundColor {
UISegmentedControl.appearance().setTitleTextAttributes([.foregroundColor: unwrappedNormalSegmentForegroundColor], for: .normal)
}
else {
UISegmentedControl.appearance().setTitleTextAttributes([.foregroundColor: UIColor.label], for: .normal)
}
}
var body: some View {
Picker("", selection: $selectedItem) {
ForEach(items, id: \.self) { item in
Text(String(describing: item))
}
}
.pickerStyle(SegmentedPickerStyle())
}
}
enum ColorEnum: String, CaseIterable, CustomStringConvertible { case red, yellow, green, blue
var ColorValue: UIColor {
get {
switch self {
case .red: return UIColor.red
case .yellow: return UIColor.yellow
case .green: return UIColor.green
case .blue: return UIColor.blue
}
}
}
var description: String {
get { return self.rawValue }
}
}