如何显示多个本地通知？答案

【问题标题】：How to show multiple local notifications?如何显示多个本地通知？
【发布时间】：2018-06-20 11:40:46
【问题描述】：

我有一个消息应用程序，我正在使用VoIP notifications 向用户发送确认。每次调用 PushKit delegate 时，我都会触发本地通知。

当前的情况是之前的通知被删除并被新的通知取代。有没有办法管理本地通知，以便用户可以在他们的设备中看到多个通知？

这是我尝试过的代码：

let notificationContent = UNMutableNotificationContent()
notificationContent.title = "Title"
notificationContent.subtitle = "Subtitle"
notificationContent.body = "Body"

// Add Trigger
let notificationTrigger = UNTimeIntervalNotificationTrigger(timeInterval: 0.01, repeats: false)

// Create Notification Request
let notificationRequest = UNNotificationRequest(identifier: "cocoacasts_local_notification", content: notificationContent, trigger: notificationTrigger)

// Add Request to User Notification Center
UNUserNotificationCenter.current().add(notificationRequest) { (error) in
  if let error = error {
    print("Unable to Add Notification Request (\(error), \(error.localizedDescription))")
       }
  }

P.S : 我不想在以后安排本地通知

【问题讨论】：

标签： ios swift localnotification pushkit

【解决方案1】：

使用for循环注册多个Notification，唯一标识为https://developer.apple.com/documentation/usernotifications/unnotificationrequest/1649634-identifier?language=objc

let notificationRequest = UNNotificationRequest(identifier: "cocoacasts_local_notification", content: notificationContent, trigger: notificationTrigger)

您应该更改此标识符“cocoacasts_local_notification”以动态重置唯一标识符

 let notification = UNMutableNotificationContent()
        let notificationTrigger = UNCalendarNotificationTrigger(dateMatching: dayComponent, repeats: true)
                        let lnMessageId:String = messageDict["Id"] as! String
                        let dayRequest = UNNotificationRequest(identifier: lnMessageId , content: notification, trigger: notificationTrigger)
                        UNUserNotificationCenter.current().add(dayRequest, withCompletionHandler: {(_ error: Error?) -> Void in
                            if error == nil
                            {
                                //print("success")
                            }
                            else
                            {
                                //print("UNUserNotificationCenter Error : \(String(describing: error?.localizedDescription))")
                            }
                        })

【讨论】：