如何使用Swift按星期推送不同文案的定时本地通知

你现有代码主要存在三个核心问题：

• 触发条件未绑定星期属性，只能固定日期/每日推送，无法实现按周几匹配内容
• 文案未读取CustomNotification中配置的各周对应内容，使用了统一的全局文案
• 触发规则包含年月日属性，重复推送逻辑不符合周度循环的需求

第一步：补充必要依赖定义 #

你代码中用到的dayNumberOfWeek()方法需要先实现Date扩展，同时补全CustomNotification结构定义：

import UserNotifications

// 补全Date获取周几的扩展，iOS默认1为周日，2为周一，以此类推到7为周六
extension Date {
    func dayNumberOfWeek() -> Int? {
        return Calendar.current.dateComponents([.weekday], from: self).weekday
    }
}

// 补全自定义通知结构定义
struct CustomNotification {
    let hours: [Int]
    let title: [String]
    let body: [String]
}

// 你用到的国际化枚举可按自己实际业务调整
enum Localizables {
    enum InformationTitles {
        static let notificationTitle = "日常提醒"
    }
}

第二步：修正后的通知管理代码 #

public struct NotificationManager {
    let notificationCenter = UNUserNotificationCenter.current()
    static let sharedInstance = NotificationManager()
    
    private func checkRequestAuthorization(completion: @escaping(Bool) -> Void) {
        let options: UNAuthorizationOptions = [.alert, .sound]
        notificationCenter.requestAuthorization(options: options) { didAllow, error in
            completion(didAllow)
        }
    }
    
    // 对外调用入口，App启动时调用即可完成所有周度通知注册
    func setLocalNotifications() {
        checkRequestAuthorization { isAllowed in
            guard isAllowed else { return }
            // 清除旧的待发送通知，避免重复
            notificationCenter.removeAllPendingNotificationRequests()
            let weekNotificationConfigs = getNotificationsCredentials()
            // 遍历一周7天的配置，逐个注册通知
            for (index, config) in weekNotificationConfigs.enumerated() {
                // 数组下标0对应周日（weekday=1），计算得到实际周几数值
                let targetWeekday = index + 1
                addSingleWeekdayNotification(weekday: targetWeekday, config: config)
            }
        }
    }
    
    // 配置各周几的推送内容和时间，可按需求自行修改
    private func getNotificationsCredentials() -> [CustomNotification] {
        return [
            CustomNotification(hours: [8,16], title: ["微笑周日", "自我周日"], body: ["今天什么事让你开心？", "今天抽点时间画画吧！"]),
            CustomNotification(hours: [16], title: ["正念周一"], body: ["今天试试正念练习吧！"]),
            CustomNotification(hours: [16], title: ["思考周二"], body: ["来玩点思维游戏吧！"]),
            CustomNotification(hours: [16], title: ["许愿周三"], body: ["今天是周三，你好，请完成对应事项"]),
            CustomNotification(hours: [16], title: ["感恩周四"], body: ["你好，今天是周四，记得完成运动任务"]),
            CustomNotification(hours: [16], title: ["感受周五"], body: ["今天一起来探索自己的情绪吧！"]),
            CustomNotification(hours: [8,16], title: ["超级周六", "歌唱周六"], body: ["今天有什么事让你超级期待？", "今天一起唱歌跳舞吧！"])
        ]
    }
    
    // 为指定周几注册对应推送
    private func addSingleWeekdayNotification(weekday: Int, config: CustomNotification) {
        for (hourIndex, pushHour) in config.hours.enumerated() {
            let content = UNMutableNotificationContent()
            // 读取该周几对应时间的自定义文案
            content.title = config.title[hourIndex]
            content.body = config.body[hourIndex]
            content.sound = UNNotificationSound.default
            
            // 仅设置周几、小时、分钟三个属性，实现每周该时间循环触发
            var triggerComponents = DateComponents()
            triggerComponents.timeZone = .current
            triggerComponents.weekday = weekday
            triggerComponents.hour = pushHour
            triggerComponents.minute = 0 // 可按需求调整分钟数
            
            let trigger = UNCalendarNotificationTrigger(dateMatching: triggerComponents, repeats: true)
            // 用固定规则生成标识符，方便后续修改推送时精准查找删除
            let identifier = "weekly_push_\(weekday)_\(pushHour)"
            let request = UNNotificationRequest(identifier: identifier, content: content, trigger: trigger)
            
            notificationCenter.add(request) { error in
                if let error = error {
                    print("通知注册失败：\(error.localizedDescription)")
                }
            }
        }
    }
}

注意事项 #

• 如果后续修改了推送文案或时间，重新调用一次NotificationManager.sharedInstance.setLocalNotifications()即可覆盖旧的通知配置
• 需要在项目Signing & Capabilities中添加Background Modes，勾选Remote notifications保证通知权限正常

内容的提问来源于stack exchange，提问作者berkehan Öztürk