SwiftUI - 访问 EventKitStore 和 store.events（匹配：...）

Question

我正在尝试将 EventKit 与 SwiftUI 结合使用，以便获取用户 iOS 日历上计划事件的简单计数。我已将隐私 - 日历使用说明添加到 Info.plist 文件中并为其添加了值。

这是我的代码。我认为谓词中的 startDate 有问题...但无论我尝试什么，我的 var events:[EKEvent] 总是返回为 0。我应该补充一点，我还在每天我都在努力让它发挥作用。非常感谢您提供的任何帮助！！！！

import EventKit
import Foundation
import SwiftUI

class EventKitManager: ObservableObject {
    
    var store = EKEventStore()
    var events: [EKEvent] = []

    init() {
        requestAccessToCalendar()
        todaysEvents()
    }
    
    func requestAccessToCalendar() {
        store.requestAccess(to: .event) { success, error in

        }
    }

    func todaysEvents() {
        let calendar = Calendar.autoupdatingCurrent
        let startDate = Date.now
        var onDayComponents = DateComponents()
        onDayComponents.day = 1
        let endDate = calendar.date(byAdding: onDayComponents, to: .now)!
        let predicate = store.predicateForEvents(withStart: startDate, end: endDate, calendars: nil)
        events = store.events(matching: predicate)
        
    }
}

import EventKit
import SwiftUI


struct ContentView: View {
    @StateObject var store = EventKitManager()
    
    var body: some View {
        Text("\(store.events.count)")
    }
}

Answer 1

谢谢@jnpdx！我找到了解决方案。以下代码有效 - 您必须在 requestAccessToCalendar 调用中重新初始化商店，当然还要使用 @Published 包装器...我不敢相信我错过了！ ：]

import EventKit
import Combine
import Foundation
import SwiftUI

class EventKitManager: ObservableObject {
    
    var store = EKEventStore()
    @Published var events: [EKEvent] = []

    
    init() {
        requestAccessToCalendar()
        todaysEvents()
  
    }
    
    func requestAccessToCalendar() {
        store.requestAccess(to: .event) { success, error in
            self.store = EKEventStore()

        }
    }
    

    func todaysEvents() {
        let calendar = Calendar.autoupdatingCurrent
        let startDate = Date.now
        var onDayComponents = DateComponents()
        onDayComponents.day = 1
        let endDate = calendar.date(byAdding: onDayComponents, to: .now)!
        let predicate = store.predicateForEvents(withStart: startDate, end: endDate, calendars: nil)
        events = store.events(matching: predicate)
        
    }
}