Swift if statement in modifier - xcode

Question

So I have an basic Taskview:
TabView {
NavigationView {
TasksView()
}
.tabItem {
Image(systemName: "bookmark")
Text("Tasks")
}
NavigationView {
ShopView()
}
.tabItem {
Image(systemName: "cart.fill")
Text("Shop")
}
}
.environment(\.colorScheme, isDarkMode ? .dark : .light)
And now I want to add an if statement to .environment. So like if Default: .environment(.colorScheme, isDarkMode ? .dark : .light)
How can I do this?

Answer 1

Use #Environment to call the current color scheme. Then you can create a color variable.
struct ContentView: View {
#Environment(\.colorScheme) private var colorScheme
var body: some View {
TabView {
NavigationView {
TasksView()
}
.tabItem {
Image(systemName: "bookmark")
Text("Tasks")
}
.foregroundColor(titleColor) // <- here
NavigationView {
ShopView()
}
.tabItem {
Image(systemName: "cart.fill")
Text("Shop")
}
.foregroundColor(titleColor) // <- here
}
}
private var titleColor: Color {
switch colorScheme {
case .light:
return .red
case .dark:
return .yellow
#unknown default:
return .blue
}
}
}

Answer 2

Here's a possible solution. Use an ObservableObject class, store and save the variable. Set it as a StateObject and set as environmentObject in your App, then you can handle updates in your View by accessing the variable.
class ColorScheme: ObservableObject {
#AppStorage("dark") var dark = false
}
struct MyApp: App {
#StateObject var colorscheme = ColorScheme()
var body: some Scene {
WindowGroup {
ContentView()
.environmentObject(colorscheme)
.colorScheme(colorscheme.dark ? .dark : .light)
}
}
}
struct ContentView: View {
#EnvironmentObject var colorscheme: ColorScheme
var body: some View {
NavigationView {
List {
Toggle("Color Scheme", isOn: colorscheme.$dark)
}
}
}
}