NavigationView{}内部需要使用NavigationLinks。没有它NavigationLink将无法工作。试试这个：

import SwiftUI

struct MedikamenteView: View {
    var body: some View {
        NavigationView {
            Form {
                NavigationLink(
                    destination: ASSView(),
                    label: {
                        Text("ASS")
                    })
                NavigationLink(
                    destination: AdrenalinView(),
                    label: {
                        Text("Adrenalin")
                    })
            }
        }
        
    }
}

struct MedikamenteView_Previews: PreviewProvider {
    static var previews: some View {
        MedikamenteView()
    }
}

您的第二个代码示例可能是从使用NavigationView {}的上一个视图加载的

我可以从评论中看到，你已经发现它只能在NavigationView中工作，现在想知道为什么。唯一重要的是，您的视图嵌入在NavigationView中，直接位于视图层次结构之上。例如，这段代码可以工作：

struct FirstView: View {
    var body: some View {
        NavigationView {
           NavigationLink(label: "Go to next view", destination: NextView())
        }
    }
}

struct NextView: View {
...

虽然这不会：

struct FirstView: View {
    @State var modalPresented = false
    var body: some View {
        NavigationView {
            Button("Show fullscreen cover"){
                modalPresented = true
            }
        }
            .fullScreenCover(isPresented: $modalPresented, content: SecondView())
    }
}

struct SecondView: View {
    var body: some View {
        NavigationLink(label: "Go to next view", destination: NextView())
        // Doesn't work because the view is in a fullScreenCover and therefore not a part of the NavigationView.
    }
}

这段代码似乎没有显示错误，但不工作。当我按下文本时，我不能改变视图。我已经尝试了一切，从swift文档中复制代码，从不同的论坛复制代码，但它根本不起作用！

import SwiftUI

struct Content: View {
    var body: some View {
        Form {
            NavigationLink{
                LinearAlgebra()
            }label: {
                Text("hi")
            }
            
            NavigationLink(
                        destination: LinearAlgebra(),
                        label: {
                            Text("linearA")
                        })
        }
        .padding()
    }
}

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

this is what the output window shows, the links don't light up, pressing them does not do anything!