// // TasksMenuView.swift // TaskClock // // Created by 张逸然 on 2023/11/15. // import SwiftUI import CloudKit import Combine // 定义任务列表的数据结构 class Task: ObservableObject, Identifiable{ @Published var tasks: [Task] = [] @Published var id: String @Published var name: String { didSet { // 检查并限制中文字符数量 limitChineseCharacterCount() } } @Published var isActivated: Bool // 任务是否启用 // PassthroughSubject var objectWillChange = PassthroughSubject() // 初始化方法 init(id: String, name: String, isActivated: Int) { self.id = id self.name = name self.isActivated = isActivated == 1 // Convert Int to Bool } // 检查中文字符数量是否超过20的私有方法 private func limitChineseCharacterCount() { let chineseCharacterCount = name.countChineseCharacters() if chineseCharacterCount > 20 { // 如果超过限制，显示错误提示 showErrorAlert() } } // 显示错误提示的私有方法 private func showErrorAlert() { // 显示错误提示 // 这里可以使用一个状态变量来控制 Alert 的显示 // 例如，@State private var isShowingErrorAlert = false // 然后在这里设置 isShowingErrorAlert = true // 在视图中使用 .alert(isPresented: $isShowingErrorAlert) { ... } 来显示 Alert print("超过20个中文字符，请重新输入") } } // 在 Task 类中添加一个计算属性，该属性返回对应于 CKRecord 的实例 extension Task { var record: CKRecord { let record = CKRecord(recordType: "Task") record["id"] = self.id as CKRecordValue record["name"] = self.name as CKRecordValue record["isActivated"] = self.isActivated as CKRecordValue // record["createtime"] = self.createtime as any CKRecordValue as CKRecordValue // record["updatetime"] = self.updatetime as any CKRecordValue as CKRecordValue return record } } // 扩展 String 类型以计算中文字符数量 extension String { func countChineseCharacters() -> Int { var count = 0 for scalar in String(self).unicodeScalars { if scalar.isChinese { count += 1 } } return count } } // 扩展 UnicodeScalar 类型以判断字符是否为中文 extension UnicodeScalar { var isChinese: Bool { return (0x4E00 <= value && value <= 0x9FFF) } } struct TasksMenuView: View { @State private var tasks: [Task] = [] @State private var isDataLoaded = false @State private var newTaskName: String = "" @State private var isShowingErrorAlert = false @State private var refreshView = false init() { loadTasks() } var body: some View { ZStack { Image("BG") .resizable() .aspectRatio(contentMode: .fill) .scaleEffect(x: -1) .ignoresSafeArea(.keyboard) ScrollView { VStack(alignment: .leading, spacing: 10) { GeometryReader { geo in HStack { Text("任务列表") .font(.title2) .padding(EdgeInsets(top: 8, leading: 16, bottom: 8, trailing: 16)) .background(RoundedRectangle(cornerRadius: 8).foregroundColor(.yellow.opacity(1.5))) .bold() } .frame(maxWidth: .infinity) .frame(height: 100) // 列表显示任务 List { ForEach(tasks) { task in Text("任务名称: \(task.name)") .foregroundColor(.black) .listRowBackground(Color.red) .bold() } } .onAppear { if !isDataLoaded { loadTasks() print("视图出现。任务数量：\(tasks.count)") } } } .padding() // Spacer() 添加垂直空间 Spacer() // Spacer() 添加额外的垂直空间，这里可以调整高度 Spacer().frame(height: 120) // 添加用于创建任务的按钮和文本字段 HStack { TextField("新任务", text: $newTaskName) .textFieldStyle(RoundedBorderTextFieldStyle()) .padding(.horizontal) Button(action: { // 点击按钮时调用添加任务的逻辑 addTask() }) { Text("添加任务") .padding() .background(RoundedRectangle(cornerRadius: 8).foregroundColor(.yellow)) .foregroundColor(.black) } } .padding() } } .alert(isPresented: $isShowingErrorAlert) { Alert(title: Text("超过20个中文字符，请重新输入")) } } .ignoresSafeArea(.keyboard) } private func addTask() { let chineseCharacterCount = newTaskName.countChineseCharacters() if chineseCharacterCount > 20 { isShowingErrorAlert = true } else { let newTask = Task( id: UUID().uuidString, name: newTaskName, isActivated: 1 ) tasks.append(newTask) newTaskName = "" // 将新任务数据同步到 CloudKit 中 print("新任务详情：ID - \(newTask.id)，名称 - \(newTask.name)，是否激活 - \(newTask.isActivated)") TaskToCloudKit(task: newTask) // 刷新视图 refreshView.toggle() } } private func TaskToCloudKit(task: Task) { // 创建新的 Task 对象 let newTask = Task( id: UUID().uuidString, name: task.name, isActivated: 1 ) let container = CKContainer(identifier: "iCloud.TaskClock") let db = container.privateCloudDatabase let taskRecord = newTask.record db.save(taskRecord) { (record, dberror) in if let error = dberror { print("保存任务到 CloudKit 出错: \(error.localizedDescription)") } else if let record = record { let savedTask = Task( id: record.recordID.recordName, name: record["name"] as? String ?? "", isActivated: record["isActivated"] as? Int ?? 0 ) OperationQueue.main.addOperation { self.tasks.append(savedTask) } print("CKRecord已保存: \(record.debugDescription)") print("任务保存到 CloudKit 成功 \(self.tasks)") } } } private func loadTasks() { let container = CKContainer(identifier: "iCloud.TaskClock") let db = container.privateCloudDatabase let query = CKQuery(recordType: "Task", predicate: NSPredicate(value: true)) db.fetch(withQuery: query) { (result: Result)], queryCursor: CKQueryOperation.Cursor?), Error>) in switch result { case .success(let matchResults): var tasks: [Task] = [] for (recordID, recordResult) in matchResults.0 { switch recordResult { case .success(let record): print("Record ID: \(recordID.recordName)") print("Record Data: \(record)") let task = Task( id: record.recordID.recordName, name: record["name"] as? String ?? "", isActivated: record["isActivated"] as? Int ?? 0 ) tasks.append(task) case .failure(let error): print("获取记录失败: \(error.localizedDescription)") } } DispatchQueue.main.async { self.tasks = tasks print("匹配的结果: \(tasks)") print("在 DispatchQueue 中的任务: \(self.tasks)") } case .failure(let error): print("查询任务时出错: \(error.localizedDescription)") } } isDataLoaded = true } } struct TasksMenuView_Previews: PreviewProvider { static var previews: some View { TasksMenuView() } }有问题的地方是位于 List {