在 SwiftUI 中更改选择器的导航标题 [英] Change Navigation Title of Picker in SwiftUI

问题描述

当用户在 Picker

这是我的选择模型:

enum AppIcon: CaseIterable, Identifiable {

    var id: Self {
        return self
    }

    case `default`
    case ethereum
    case litecoin

    var name: String {
        switch self {
        case .default:
            return "Bitcoin"
        case .ethereum:
            return "Ethereum"
        case .litecoin:
            return "Litecoin"
        }
    }
}

这是我的观点

struct ContentView: View {
    @State var icon: AppIcon = .default
    var body: some View {
        NavigationView {
            Form {
                Section {
                    Picker(selection: $icon, label: Text("Icon")) {
                        ForEach(AppIcon.allCases) { icon in
                            Text(icon.name).tag(icon)
                        }
                    }
                }
            }
            .navigationBarTitle("Appearance")
        }
    }
}

我想得到这种行为:

但我试图将 .navigationBarTitle("Title") 放在任何右括号之后，但它不起作用.

but I tried to put .navigationBarTitle("Title") after any close bracket and it doesn't work.

推荐答案

我已尝试解决问题.

struct ContentView: View {
    
    @State var icon: AppIcon = .default
    
    var body: some View {
        NavigationView {
            Form {
                Section {
                    Picker(selection: $icon, label: Text("Icon")) {
                        ForEach(AppIcon.allCases) { icon in
                            Text(icon.name).tag(icon)
                        }
                        .navigationBarTitle("Title") // for picker navigation title 
                    }
                    .navigationBarTitle("Appearance")
                }
            }
        }
    }
}

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