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SwiftUI TabView Orientation change fix
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import SwiftUI | |
struct TabViewRotationFix: View { | |
@State | |
private var selectedTab = Int.zero | |
@State | |
private var isLandscape = false | |
var body: some View { | |
GeometryReader { proxy in | |
ScrollView { | |
TabView(selection: $selectedTab) { | |
Color.yellow | |
.frame(width: proxy.size.width, height: proxy.size.height) | |
.ignoresSafeArea() | |
.overlay(Text("0").font(.largeTitle).fontWeight(.bold)) | |
.tag(0) | |
Color.blue | |
.frame(width: proxy.size.width, height: proxy.size.height) | |
.ignoresSafeArea() | |
.overlay(Text("1").font(.largeTitle).fontWeight(.bold)) | |
.tag(1) | |
Color.gray | |
.frame(width: proxy.size.width, height: proxy.size.height) | |
.ignoresSafeArea() | |
.overlay(Text("2").font(.largeTitle).fontWeight(.bold)) | |
.tag(2) | |
} | |
.frame(width: proxy.size.width, height: proxy.size.height) | |
.overlay(Text(isLandscape ? "Landscape" : "Portrait").font(.title).padding(.bottom, 40), alignment: .bottom) | |
.tabViewStyle(PageTabViewStyle(indexDisplayMode: .always)) | |
.onChange(of: isLandscape) { isLandscape in | |
if selectedTab > 0 { // Do not reset for first element | |
let beforeIndex = selectedTab | |
DispatchQueue.main.asyncAfter(deadline: .now() + 0.4) { | |
selectedTab = beforeIndex | |
} | |
} | |
} | |
// Implement your rotation change modifier | |
.onRotate { newOrientation in | |
isLandscape = newOrientation == .landscapeLeft || newOrientation == .landscapeRight | |
} | |
} | |
.frame(width: proxy.size.width, height: proxy.size.height) | |
.foregroundColor(.white) | |
} | |
.edgesIgnoringSafeArea(.all) | |
} | |
} | |
extension View { | |
func onRotate(perform action: @escaping (UIDeviceOrientation) -> Void) -> some View { | |
self.modifier(DeviceRotationViewModifier(action: action)) | |
} | |
} | |
struct DeviceRotationViewModifier: ViewModifier { | |
let action: (UIDeviceOrientation) -> Void | |
func body(content: Content) -> some View { | |
content | |
.onReceive(NotificationCenter.default.publisher(for: UIDevice.orientationDidChangeNotification)) { _ in | |
action(UIDevice.current.orientation) | |
} | |
} | |
} |
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