How to detect whether it is self-dragging or not in SwiftUI?

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Created Jun ’23

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I've written a sample macOS app using SwiftUI, It can import some files by dragging from other apps and export the files by dragging too. However, when I drag the files from the list view of the app and drop it, the app will import the dragging files too as dragging from other apps. I don't know how to detect the dragging from other apps or the dragging from the app itself. Anyone can help? Thanks!

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Answer 1

Yozone Wang OP

Jun ’23

Here is some code snippets:

...
           ForEach(pngs) { row in
                TableRow(row)
                    .itemProvider {
                        row.targetURL.flatMap(NSItemProvider.init(contentsOf:))
                    }
            }
...
        .onDrop(of: [.png], isTargeted: $isDropTarget) { providers in
                    files.removeAll()
                    providers.forEach { provider in
                        _ = provider.loadFileRepresentation(for: .png, openInPlace: true) { url, _, _ in
                            Task { @MainActor in
                                url.map {
                                    files.append(.init(url: $0))
                                }
                            }
                        }
                    }
                    return true
        }
...

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