Scrumdinger现在在两次发射之间保留数据。在下一章中，您将为会议计时器视图构建进度环，以向应用程序添加一些修饰。

mona-lisa-octo-ue5 · Jan 6, 2021 · c985339 · c985339
1 parent dffd8a0
commit c985339
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Showing 4 changed files with 13 additions and 5 deletions.
diff --git a/...eproj/project.xcworkspace/xcuserdata/shiyulong.xcuserdatad/UserInterfaceState.xcuserstate b/...eproj/project.xcworkspace/xcuserdata/shiyulong.xcuserdatad/UserInterfaceState.xcuserstate
diff --git a/SwiftUIPro/SwiftUIPro/EditView.swift b/SwiftUIPro/SwiftUIPro/EditView.swift
@@ -24,7 +24,6 @@ struct EditView: View {
                 }
                 ColorPicker("Color",selection:$scrumData.color)
             }
-
             Section(header: Text("Attendees")) {
                 ForEach(scrumData.attendees,id:\.self){ attendee in
                     Text(attendee)

diff --git a/SwiftUIPro/SwiftUIPro/ScrumsView.swift b/SwiftUIPro/SwiftUIPro/ScrumsView.swift
@@ -9,8 +9,10 @@ import SwiftUI
 
 struct ScrumsView: View {
     @Binding var scrums:[DailyScrum]
+    @Environment(\.scenePhase) private var scenePhase
     @State private var isPresented=false
     @State private var newScrumData=DailyScrum.Data()
+    let saveAction:()->Void
     var body: some View {
         List{
             ForEach(scrums){ scrum in
@@ -38,8 +40,10 @@ struct ScrumsView: View {
                     })
             }
         }
+        .onChange(of: scenePhase) { phase in
+            if phase == .inactive { saveAction() }
+        }
     }
-
     private func binding(for scrum:DailyScrum)->Binding<DailyScrum>{
         guard let scrumIndex = scrums.firstIndex(where: { $0.id==scrum.id}) else { fatalError("Can't find scrum in array") }
         return $scrums[scrumIndex]
@@ -49,7 +53,7 @@ struct ScrumsView: View {
 struct ScrumsView_Previews: PreviewProvider {
     static var previews: some View {
         NavigationView{
-            ScrumsView(scrums: .constant(DailyScrum.data))
+            ScrumsView(scrums: .constant(DailyScrum.data), saveAction: {})
         }
     }
 }
diff --git a/SwiftUIPro/SwiftUIPro/SwiftUIProApp.swift b/SwiftUIPro/SwiftUIPro/SwiftUIProApp.swift
@@ -9,11 +9,16 @@ import SwiftUI
 
 @main
 struct SwiftUIProApp: App {
-    @State private var scrums = DailyScrum.data
+    @ObservedObject private var data=ScrumData()
     var body: some Scene {
         WindowGroup {
             NavigationView{
-                ScrumsView(scrums: $scrums)
+                ScrumsView(scrums: $data.scrums){
+                    data.save()
+                }
+            }
+            .onAppear{
+                data.load()
             }
         }
     }