在MacCatalyst的SwiftUI应用程序中隐藏标题栏
如何在新的 SwiftUI 应用协议中隐藏标题栏？
由于 AppDelegate.swift 和 SceneDelegate.swift 协议消失了，我不能再遵循这个文档了：https :
//developer.apple.com/documentation/uikit/mac_catalyst/removing_the_title_bar_in_your_mac_app_built_with_mac_catalyst
我无法实现此代码：
class SceneDelegate: UIResponder, UIWindowSceneDelegate {
var window: UIWindow?
func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
guard let windowScene = (scene as? UIWindowScene) else { return }
#if targetEnvironment(macCatalyst)
if let titlebar = windowScene.titlebar {
titlebar.titleVisibility = .hidden
titlebar.toolbar = nil
}
#endif
}
}
希望新的 AppProtocol 仍有可能。
提前致谢
回答
这是隐藏标题栏的方法：
struct ContentView: View {
var body: some View {
ZStack {
Text("Example UI")
}
.withHostingWindow { window in
#if targetEnvironment(macCatalyst)
if let titlebar = window?.windowScene?.titlebar {
titlebar.titleVisibility = .hidden
titlebar.toolbar = nil
}
#endif
}
}
}
extension View {
fileprivate func withHostingWindow(_ callback: @escaping (UIWindow?) -> Void) -> some View {
self.background(HostingWindowFinder(callback: callback))
}
}
fileprivate struct HostingWindowFinder: UIViewRepresentable {
var callback: (UIWindow?) -> ()
func makeUIView(context: Context) -> UIView {
let view = UIView()
DispatchQueue.main.async { [weak view] in
self.callback(view?.window)
}
return view
}
func updateUIView(_ uiView: UIView, context: Context) {
}
}