iOS15/16兼容开发：带isActive绑定的NavigationLink适配方案咨询

针对iOS15最低适配、又要兼容高版本，且必须用isActive控制导航的场景，分享几个无需大量重复代码的解决方案：

1. 封装兼容版NavigationLink组件 #

直接封装一个自动适配版本的导航链接，替换原有代码即可，不用到处修改逻辑：

import SwiftUI

struct CompatibilityNavigationLink<Destination: View, Label: View>: View {
    let destination: Destination
    @Binding var isActive: Bool
    let label: Label
    
    var body: some View {
        if #available(iOS 16.0, *) {
            // iOS16+ 用Button+navigationDestination组合，彻底规避弃用警告
            Button(action: { isActive = true }, label: { label })
                .navigationDestination(isPresented: $isActive) {
                    destination
                }
        } else {
            // iOS15 保留原有构造器
            NavigationLink(
                destination: destination,
                isActive: $isActive,
                label: { label }
            )
        }
    }
}

// 扩展简化调用，和原生NavigationLink用法一致
extension CompatibilityNavigationLink where Label == Text {
    init<S: StringProtocol>(_ title: S, destination: Destination, isActive: Binding<Bool>) {
        self.init(destination: destination, isActive: isActive) {
            Text(title)
        }
    }
}

用法：把原来的NavigationLink(destination:isActive:label:)直接换成CompatibilityNavigationLink，比如：

CompatibilityNavigationLink("跳转到详情", destination: DetailView(), isActive: $isDetailActive)

2. 条件渲染导航容器 #

同时适配iOS15的NavigationView和iOS16+的NavigationStack，配合上面的兼容组件，保证整体导航逻辑统一：

struct ContentView: View {
    @State private var isDetailActive = false
    
    var body: some View {
        Group {
            if #available(iOS 16.0, *) {
                NavigationStack {
                    CompatibilityNavigationLink("跳转到详情", destination: DetailView(), isActive: $isDetailActive)
                }
            } else {
                NavigationView {
                    NavigationLink("跳转到详情", destination: DetailView(), isActive: $isDetailActive)
                }
                .navigationViewStyle(.stack)
            }
        }
    }
}

struct DetailView: View {
    @Environment(\.dismiss) private var dismiss
    
    var body: some View {
        Button("返回") {
            dismiss()
        }
        .navigationTitle("详情页")
    }
}

3. 直接消除弃用警告（快速临时方案） #

如果不想重构代码，只是想去掉编译警告，可以给目标代码添加编译器忽略指令：

// 单个导航链接消除警告
// swiftlint:disable:next deprecated_function
NavigationLink(
    destination: DetailView(),
    isActive: $isDetailActive,
    label: { Text("跳转到详情") }
)

// 或者针对整个文件添加忽略（在文件顶部）
// swiftlint:disable deprecated_function

注：iOS16+中标记弃用的isActive构造器其实仍可正常运行，只是苹果推荐用新API，这个方案适合短期过渡。

内容的提问来源于stack exchange，提问作者onthemoon