我尝试通过SwiftUI中的ShareLink（UIActivityViewController）在应用程序内的两个用户之间共享自定义结构体。我创建了自定义文档类型、导出类型标识符并将结构体标记为可传输。
然而，虽然我能够将示例保存到文件中，但我想通过AirDrop或类似方式将其发送给另一个用户，S.T.应用程序显示为应用程序活动。

import SwiftUI
import UniformTypeIdentifiers

struct SwiftUIView: View {
    @State private var customStruct: CustomStruct = CustomStruct()
    var body: some View {
        ShareLink(item: customStruct, preview: SharePreview(customStruct.name))
    }
}

struct CustomStruct: Codable {
    var name: String = "Test Example"
    var description: String = "Test"
}

extension CustomStruct: Transferable {
    static var transferRepresentation: some TransferRepresentation {
        CodableRepresentation(contentType: .customStruct)
    }
}

extension UTType {
    static var customStruct: UTType { UTType(exportedAs: "com.TestExample.CustomStruct") }
}

struct SwiftUIView_Previews: PreviewProvider {
    static var previews: some View {
        SwiftUIView()
    }
}