SwiftUI Catalyst Mac 应用程序中的 UIButton 在第二次单击时不起作用

Question

这是我的代码：

private struct ShareButton: UIViewRepresentable {
    func makeUIView(context: Context) -> UIButton {
        let activityViewController = UIActivityViewController(activityItems: [URL(string: "https://www.apple.com/")!], applicationActivities: nil)
        let action = UIAction(title: "Share") { _ in UIApplication.shared.windows.first(where: { $0.isKeyWindow })?.rootViewController?.present(activityViewController, animated: false) }
        let button = UIButton(primaryAction: action)
        activityViewController.popoverPresentationController?.sourceView = button
        return button
    }
    func updateUIView(_ uiView: UIButton, context: Context) { }
}

基本上它是创建一个带有UIAction 的UIButton，其中有一个UIActivityViewController 将sourceView 设置为共享菜单为UIButton。

这里是问题的演示：

UIButton 在创建 SwiftUI 视图时创建，并设置为 sourceView。我的猜测是出现问题是因为 UIButton 由于某些 SwiftUI 机制而以某种方式被破坏和重新创建？不过，我可能完全错了。无论如何要解决这个问题？

或者以任何其他方式在 SwiftUI Catalyst Mac 应用程序中执行共享按钮？

Answer 1

“或任何其他方式在 SwiftUI Catalyst Mac 应用程序中执行共享按钮？”

您可以尝试这种方法，使用以下扩展名： How to get rid of message " 'windows' was deprecated in iOS 15.0: Use UIWindowScene.windows on a relevant window scene instead" with AdMob banner?

public extension UIApplication {
    func currentUIWindow() -> UIWindow? {
        let connectedScenes = UIApplication.shared.connectedScenes
            .filter({
                $0.activationState == .foregroundActive})
            .compactMap({$0 as? UIWindowScene})

        let window = connectedScenes.first?
            .windows
            .first { $0.isKeyWindow }

        return window

    }
}

struct ContentView: View {
    let holaTxt = "Hola ? "
    
    var body: some View {
        Button(action: {
            let AV = UIActivityViewController(activityItems: [holaTxt], applicationActivities: nil)
            UIApplication.shared.currentUIWindow()?.rootViewController?.present(AV, animated: true, completion: nil)
        }) {
            Text("Share")
        }
    }
}

Answer 2

找到了一个优雅的解决方案，用于在 SwiftUI Catalyst Mac 应用（实际上是所有 SwiftUI 应用）中创建分享按钮，请参阅 https://github.com/SwiftUI-Plus/ActivityView