SwiftUI drag from one list to another list - ios

Question

I am trying to drag and drop between to Lists.
What I have tried:
I have found a solution doing it in UIKIt and the using UIViewControllerRepresentable. But that is not what i want.
The other solution was using .onDrag {} on list, but that worked on iPad and didn't work on iPhone.
How to move items between two Lists on iPhone?

Answer 1

check this out:
BUT -> as you wrote, it works NOT with list (just on iPad), with VStack
you can drag from left to right or right to left.
import SwiftUI
struct BookmarksList2: View {
#State private var links: [URL] = [
URL(string: "https://www.apple.com")!
]
var body: some View {
VStack {
ForEach(links, id: \.self) { url in
Text(url.absoluteString)
.onDrag {
NSItemProvider(object: url as NSURL)
}
}
.onInsert(of: ["public.url"], perform: drop)
.onDrop(
of: ["public.url"],
delegate: BookmarksDropDelegate(bookmarks: $links)
)
}
.navigationBarTitle("Bookmarks")
}
private func drop(at index: Int, _ items: [NSItemProvider]) {
for item in items {
_ = item.loadObject(ofClass: URL.self) { url, _ in
DispatchQueue.main.async {
url.map { self.links.insert($0, at: index) }
}
}
}
}
}
struct BookmarksList3: View {
#State private var links: [URL] = [
URL(string: "https://www.google.com")!
]
var body: some View {
VStack {
ForEach(links, id: \.self) { url in
Text(url.absoluteString)
.onDrag {
NSItemProvider(object: url as NSURL)
}
}
.onInsert(of: ["public.url"], perform: drop)
.onDrop(
of: ["public.url"],
delegate: BookmarksDropDelegate(bookmarks: $links)
)
}
.navigationBarTitle("Bookmarks")
}
private func drop(at index: Int, _ items: [NSItemProvider]) {
for item in items {
_ = item.loadObject(ofClass: URL.self) { url, _ in
DispatchQueue.main.async {
url.map { self.links.insert($0, at: index) }
}
}
}
}
}
struct BookmarksDropDelegate: DropDelegate {
#Binding var bookmarks: [URL]
func performDrop(info: DropInfo) -> Bool {
guard info.hasItemsConforming(to: ["public.url"]) else {
return false
}
let items = info.itemProviders(for: ["public.url"])
for item in items {
_ = item.loadObject(ofClass: URL.self) { url, _ in
if let url = url {
DispatchQueue.main.async {
self.bookmarks.insert(url, at: 0)
}
}
}
}
return true
}
}
struct ContentView : View {
var body: some View {
HStack {
BookmarksList2()
Divider()
BookmarksList3()
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}