关于 SwiftUI 屏幕旋转和 NavigationView 的一个小疑问

struct ContentView: View { var body: some View { NavigationView { NavigationLink(destination: ListView()) { Text("To ListView") } } } } struct ListView: View { var body: some View { NavigationLink(destination: DetailView()) { Text("To DetailView") } } } struct DetailView: View { var body: some View { Text("DetailView") } }

现在情况是在 iPhone 上，如果在 DetailView 中从 Portrait 转换到 Landscape，就会自动回到 ListView，如果先横屏再进入 DetailView，之后怎么旋转也不会回去。

搜了一下发现给 NavigationView 设置 StackNavigationViewStyle 就不会出现这种情况了，但是如果我想在默认或者两栏样式的 NavigationView 上旋转屏幕而不自动返回 ListView 该怎么做呢？

detailview

view

listview

struct

2 replies 2021-02-08 09:12:05 +08:00

95276

Feb 8, 2021

首先建议你在 iPhone 上使用 StackNavigationViewStyle

其次下面的代码应该能达到你想要的效果,但不建议使用
```swift
import SwiftUI

struct ContentView: View {
var body: some View {
VStack {
NavigationView {
NavigationLink(destination: ListView()) {
Text("To ListView")
}
}
}
}
}

struct ListView: View {
@State var tap = false
@State var active = false
var body: some View {
NavigationLink(destination: DetailaView(tap: $tap), isActive: $active) {
Text("To DetailView")
.onTapGesture {
active = true
tap = true
}
}
.onAppear {
active = tap
}
}
}

struct DetailaView: View {
@Binding var tap: Bool
var body: some View {
Text("DetailView")
.onDisappear {
tap = false
}
}
}
```

shoujiaxin

Feb 8, 2021 via iPhone

@95276 学习了，感谢