如何从半屏Sheet推送全屏SFSafariViewController？

问题出在你用NavigationLink在Sheet的NavigationView栈内推送页面，导致Sheet的导航栏与SFSafariViewController的导航栏叠加，且页面被Sheet的尺寸限制无法全屏。以下是修正方案：

核心修改点 #

• 移除Sheet页面（PresentView）中的NavigationView，改用按钮触发全屏展示SFSafariViewController
• 使用.fullScreenCover替代NavigationLink，实现全屏推送效果
• 可为Sheet添加独立的导航栏（用于关闭Sheet），避免与Safari的导航栏冲突

修正后的完整代码 #

import SwiftUI
import SafariServices

struct ContentView: View {
    @State private var showingSheet = false
    
    var body: some View {
        NavigationStack { // iOS16+推荐用NavigationStack，兼容旧版可保留NavigationView
            VStack {
                Button("Show sheet") {
                    showingSheet = true
                }
            }
            .frame(maxWidth: .infinity, maxHeight: .infinity)
            .background(Color.gray.opacity(0.2))
            .sheet(isPresented: $showingSheet) {
                PresentView()
            }
        }
    }
}

struct PresentView: View {
    @Environment(\.dismiss) private var dismiss
    @State private var showFullScreenSafari = false
    
    var body: some View {
        VStack {
            Button("Link btn") {
                showFullScreenSafari = true
            }
            .foregroundColor(.blue)
        }
        .frame(maxWidth: .infinity, maxHeight: .infinity)
        .background(Color.gray.opacity(0.2))
        .toolbar { // 给Sheet添加导航栏关闭按钮
            ToolbarItem(placement: .navigationBarTrailing) {
                Button("Cancel") {
                    dismiss()
                }
            }
        }
        .navigationTitle("Sheet") // Sheet的导航标题（可选）
        .fullScreenCover(isPresented: $showFullScreenSafari) {
            SafariView(url: URL(string: "https://github.com/")!)
        }
    }
}

struct SafariView: UIViewControllerRepresentable {
    let url: URL
    
    func makeUIViewController(context: Context) -> SFSafariViewController {
        return SFSafariViewController(url: url)
    }

    func updateUIViewController(_ uiViewController: SFSafariViewController, context: Context) {}
}

效果说明 #

• 点击主页面的"Show sheet"会弹出半屏Sheet，Sheet带有独立的导航栏（含关闭按钮）
• 点击Sheet内的"Link btn"，会全屏弹出SFSafariViewController，仅显示Safari自身的导航栏
• 关闭Safari后会回到Sheet页面，关闭Sheet则回到主页面

内容的提问来源于stack exchange，提问作者mars