锁定屏幕ios上的本地通知

Question

我想在iOS中锁定屏幕时发送本地通知。下面是我添加的代码。但在屏幕锁定时无法收到通知

let notification = UILocalNotification()
notification.alertAction = "Go back to App"
notification.alertBody = "Phone Found..!!"
notification.fireDate = NSDate(timeIntervalSinceNow: 1) as Date
UIApplication.shared.scheduleLocalNotification(notification)
notification.soundName = UILocalNotificationDefaultSoundName 

请建议，我错过了什么。提前谢谢你。

Answer 1

你的代码工作把你必须增加时间间隔，UILocalNotification被弃用UNUserNotificationCenter

UNUserNotificationCenter.current().requestAuthorization(options: [.alert])
    { (success, error) in
        if success {
            print("Permission Granted")
        } else {
            print("There was a problem!")
        }
    }

    let notification = UNMutableNotificationContent()
    notification.title = "title"
    notification.subtitle = "subtitle"
    notification.body = "the body."
    let notificationTrigger = UNTimeIntervalNotificationTrigger(timeInterval: 5, repeats: false)
    let request = UNNotificationRequest(identifier: "notification1", content: notification, trigger: notificationTrigger)
    UNUserNotificationCenter.current().add(request, withCompletionHandler: nil)

Answer 2

可以使用共享的 UNUserNotificationCenter 对象来计划本地通知。您需要将用户通知框架导入到 swift 文件中，然后您可以请求本地通知。

import UserNotifications

你需要在AppDelegate的didFinishLaunchingWithOptions中调用该函数。

registerForLocalNotifications()

注册本地通知((的定义

  func registerForLocalNotifications() {
    UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) {
        (granted, error) in
        print("Permission granted: (granted)")
        guard granted else {return}
        self.getNotificationSettings()
    }
}
func getNotificationSettings() {
    UNUserNotificationCenter.current().getNotificationSettings { (settings) in
        print("Notification settings: (settings)")
        guard settings.authorizationStatus == .authorized else {return}
        // UIApplication.shared.registerForRemoteNotifications()
    }
}

然后，您可以像这样创建通知内容和通知请求。

let content = UNMutableNotificationContent()
content.title = "Title of Notification"
content.body = "Body of Notification"
content.sound = UNNotificationSound.default()

let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 120, repeats: true)           

let request = UNNotificationRequest(identifier: "Identifier of notification", content: content, trigger: trigger)
UNUserNotificationCenter.current().add(request, withCompletionHandler: {(error) in
                    if let error = error {
                        print("SOMETHING WENT WRONG")
                    }
                })