Under iOS 17, I need to set view.backgroundColor when using UIActivityViewController, otherwise the navigationBar will be transparent. (iOS 17 does not have this problem) I have checked many tutorial examples but this situation is not mentioned. Is there any implementation missing from my code? Sample Code: let sharedURL = URL(string: "...")! let activityVC = UIActivityViewController(activityItems: [sharedURL], applicationActivities: nil) present(activityVC, animated: true) Sample Image:

Hello! I developed a vpn application with PacketTunnel target. And I found that an app can pop up a system alert when connecting through VPN settings. I want to know how this approach is achieved.