SwiftUI:如果不在列表中，NavigationLink 将无法工作 [英] SwiftUI: NavigationLink not working if not in a List

问题描述

我猜这可能是 beta 3 中的一个错误，因为 NavigationView 已全部损坏.但是这样的观点:

I guess it might be a bug in beta 3 as the NavigationView is all broken. But a view like that:

struct GenreBadge : View {
    @EnvironmentObject var store: Store<AppState>
    let genre: Genre

    var body: some View {
        NavigationLink(destination: MoviesGenreList(genre: genre).environmentObject(store)) {
            RoundedBadge(text: genre.name)
        }
    }
}

不会触发导航堆栈中的任何推送.该视图似乎根本没有交互性.如果有人找到解决方法会很好，除非 Apple 记录此行为，否则我会认为它在测试版 4 之前已损坏.

is not triggering any push in the navigation stack. The view doens't seems interactive at all. If anyone found a workaround would be good, unless Apple is documenting this behaviour I would consider it broken until beta 4.

推荐答案

我已向 Apple 报告了 Xcode 11.3(11C29) 版中的导航链接似乎存在错误.

There seems to be a bug with the navigation link in Xcode version 11.3(11C29) which I have reported to Apple.

注意:这个问题只出现在模拟器中.它在真实设备上运行良好.感谢@djr

以下代码在您第一次使用导航链接时按预期工作.不幸的是，它第二次变得没有反应.

The below code works as expect the first time you use the navigation link. Unfortunately it becomes unresponsive the second time around.

import SwiftUI

struct ContentView : View {
    var body: some View {
        NavigationView {
            VStack {
                NavigationLink(destination: SomeView()) {
                    Text("Hello!")
                }
            }
        }
    }
}

struct SomeView: View {
    var body: some View {
        Text("Detailed View")
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

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