SwiftUI：滑動洗掉操作后，EditButton說“完成”

為什么在我使用“滑動洗掉”洗掉一個 scrum 后，EditButton 顯示“完成”（而不是“編輯”）？

我嘗試在 onDelete 中將 editMode 更改為 .inactive，但即使這樣也沒有用。

為什么這不起作用，我可以以某種方式修復它嗎？是新的bug嗎？

struct ScrumsView: View {
    @Binding var scrums: [DailyScrum]
    @Environment(\.scenePhase) private var scenePhase
    @State private var isPresentingNewScrumView = false
    @State private var newScrumData = DailyScrum.Data()
    let saveAction: ()->Void
    
    var body: some View {
        List {
            ForEach($scrums) { $scrum in
                NavigationLink(destination: DetailView(scrum: $scrum)) {
                    CardView(scrum: scrum)
                }
                .listRowBackground(scrum.theme.mainColor)
            }
            .onDelete { indexSet in
                scrums.remove(atOffsets: indexSet)
            }
        }
        .navigationTitle("Daily Scrums")
        .toolbar {
            ToolbarItemGroup(placement: .navigationBarLeading) {
                EditButton()
            }
            ToolbarItemGroup(placement: .navigationBarTrailing) {
                Button {
                    isPresentingNewScrumView = true
                } label: {
                    Image(systemName: "plus")
                }
                .accessibilityLabel("New scrum")
            }
        }
        .sheet(isPresented: $isPresentingNewScrumView) {
            NavigationView {
                DetailEditView(data: $newScrumData)
                    //.navigationTitle(Text("New Scrum"))
                    .toolbar {
                        ToolbarItemGroup(placement: .cancellationAction) {
                            Button("Dismiss") {
                                isPresentingNewScrumView = false
                                newScrumData = DailyScrum.Data()
                            }
                        }
                        ToolbarItemGroup(placement: .confirmationAction) {
                            Button("Add") {
                                let newScrum = DailyScrum(data: newScrumData)
                                scrums.append(newScrum)
                                isPresentingNewScrumView = false
                                newScrumData = DailyScrum.Data()
                            }
                        }
                    }
            }
        }
        .onChange(of: scenePhase) { phase in
            if phase == .inactive { saveAction() }
        }
    }
}

uj5u.com熱心網友回復：

似乎EditButton與這種@StateObject用于宣告商店物件的新方式不兼容。我有想法嘗試恢復到創建商店物件的舊方式，令人驚訝的是它解決了這個問題。改成ScrumStore這個

class ScrumStore: ObservableObject {
    @Published var scrums: [DailyScrum] = []
    
    static var shared = ScrumStore()

并將其更改ScrumdingerApp為：

struct ScrumdingerApp: App {
    private var store = ScrumStore.shared
    
    var body: some Scene {
        WindowGroup {
            NavigationView {
                ScrumsView(store: store) {

ScrumsView對此：

struct ScrumsView: View {
    //@Binding var scrums: [DailyScrum]
    @ObservedObject var store: ScrumStore

...

var body: some View {
    List {
        ForEach($store.scrums) { $scrum in

并將另一個更改scrums為store.scrums太。

這使得編輯按鈕可以正常作業以滑動洗掉

我還將通過使 store 物件成為 Environment 物件來改進代碼，例如

struct ScrumdingerApp: App {
    private var store = ScrumStore.shared
    
    var body: some Scene {
        WindowGroup {
            ContentView()
            .environmentObject(store)
        }
}

struct ContentView: View {
    @EnvironmentObject var store: ScrumStore
   
...

我還將改進模型結構的加載和保存方式，例如，我將在物件的 init 中加載它并具有保存它的功能。該函式可以在場景階段或模型變異后呼叫。在進行過多的加載和保存之前，您可能想嘗試一下FileDocument哪個可以為您完成所有這些并免費為您提供 iCloud 驅動器支持。我推薦檔案應用 WWDC 視頻來了解這一點，每年都有一個新的。

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