iOS项目中通知触发多次

使用UNUserNotificationCenter的removePendingNotificationRequests方法来删除重复的通知请求。

示例代码：

// 创建通知内容 let content = UNMutableNotificationContent() content.title = "提醒" content.body = "您有一个新的待办事项" content.sound = UNNotificationSound.default

// 创建通知触发器 let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 60, repeats: false)

// 创建通知请求 let request = UNNotificationRequest(identifier: "reminder", content: content, trigger: trigger)

// 将通知请求添加到通知中心 UNUserNotificationCenter.current().add(request) { (error) in if let error = error { print(error.localizedDescription) } else { print("通知添加成功") } }

// 删除重复的通知请求 UNUserNotificationCenter.current().getPendingNotificationRequests { requests in let identifiers = requests.map { $0.identifier } var uniqueIdentifiers = Set(identifiers) uniqueIdentifiers.remove("reminder") UNUserNotificationCenter.current().removePendingNotificationRequests(withIdentifiers: Array(uniqueIdentifiers)) }