SwifUI LandScape NavigationTopBar不会隐藏

问题描述

在所有视图之间我只需要一个风景视图，因此我在AppDelegate中添加了以下代码

func application(_ application: UIApplication,supportedInterfaceOrientationsFor window: 
UIWindow?) -> UIInterfaceOrientationMask {
    return AppDelegate.orientationLock
}

并且我已经创建了一个像波纹管这样的自定义修改器，以强制特定视图处于横向模式

    struct LandScapeOrientation: ViewModifier {
    
        func body(content: Content) -> some View {
            content
                .onAppear {
                    AppDelegate.orientationLock = UIInterfaceOrientationMask.landscapeLeft
                    UIDevice.current.setValue(UIInterfaceOrientation.landscapeLeft.rawValue,forKey: "orientation")
                    UINavigationController.attemptRotationToDeviceOrientation()
                 }
                .ondisappear {
                    dispatchQueue.main.async {
                    AppDelegate.orientationLock = UIInterfaceOrientationMask.portrait
                    UIDevice.current.setValue(UIInterfaceOrientation.portrait.rawValue,forKey: "orientation")
                    UINavigationController.attemptRotationToDeviceOrientation()
                }
            }
    }}

    extension View {
    func landScape() -> some View{
        self.modifier(LandScapeOrientation())
    }
}

我创建的视图就像下面这样：

struct GameplayScene: View {

//MARK: - Var
@State var round = NeverMindRound.first
@Binding var mode: NevermindMode
//MARK: - Views
private var background: some View {
    colors.customYellowOk.value
        .edgesIgnoringSafeArea(.all)
}
//MARK: - MainBody
var body: some View {
    
   return ZStack{
    
    background
        
    RoundIntro(round: $round)
            .landScape()
    .navigationBarHidden(true)
    .navigationBarBackButtonHidden(true)
    .statusBar(hidden: true)
    }.navigationBarHidden(true)
    .navigationBarBackButtonHidden(true)
    .statusBar(hidden: true)

}}

所以问题在于，以横向模式显示此视图后，导航栏将显示，即使我指定应将其隐藏，也无法将其隐藏。

这是GamePlay展示的rounIntro视图

      struct RoundIntro: View {
    
    
    //MARK: - Vars
    @Binding var round: NeverMindRound
   
    
    //MARK: - View
    private var roundTitle: some View {
        var shadow     = colors.round1TitleShadow.value
        var roundTitle = "Round 1"
        switch round {
            case .first:
                roundTitle = "Round 1"
                shadow     = colors.round1TitleShadow.value
            case .second:
                roundTitle = "Round 2"
                shadow     = colors.round2TitleShadow.value
            case .third:
                roundTitle = "Round 3"
                shadow     = colors.round3TitleShadow.value
        }
        return Text(roundTitle)
                .font(rubik.black.with(Size: 118))
                .foregroundColor(.white)
                .shadow(color: shadow,radius: 6,x: -7,y: 7)
    }
    
    //MARK: - MainBody
    var body: some View {
        roundTitle
        .landScape()
    }
    
    
}

另一件事是，在按下导航栏的后退按钮后，它不会强制视图返回纵向模式。 这是情况的照片：

解决方法

您已将导航栏设置为

struct RoundIntro: View {

但是您应该为各自的UIViewController的导航栏设置hidden = true属性