Question

每当应用收到操作响应时，我想在AppDelegate.swift中访问我的应用程序数据。我试图使用

func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {

    if response.actionIdentifier == "check" {
        //do something to the app's data
    }

    completionHandler()

}

方法，但我无法找到数据，因为我无法获取通知的标识符及其正文。有人可以帮助我吗？非常感谢你们。

更多代码：

//Setting content of the notification
let content = UNMutableNotificationContent()
content.title = "Scheduled Task"
content.body = taskDescriptionTextField.text!
content.badge = 1
content.sound = UNNotificationSound.default()
content.categoryIdentifier = "alertCategory"
//Setting time for notification trigger
let date = datePicker.date
let dateCompenents = Calendar.current.dateComponents([.year,.month,.day,.hour,.minute,.second], from: date)
let trigger = UNCalendarNotificationTrigger(dateMatching: dateCompenents, repeats: false)
//Adding Request
let request = UNNotificationRequest(identifier: taskDescriptionTextField.text!, content: content, trigger: trigger)
UNUserNotificationCenter.current().add(request, withCompletionHandler: nil)

Answer 1

做：

func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {

    print("original identifier was : \(response.notification.request.identifier)")
    print("original body was : \(response.notification.request.content.body)")
    print("Tapped in notification")
}

基本上是什么，是你得到一个UNNotificationResponse实例。该对象有两个属性。

var actionIdentifier: String
var notification: UNNotification＆lt; - 你需要使用这个。

还可以找到一个非常好的UNUserNotification框架教程here

如果您想知道用户在收到通知时选择了哪些操作，那么您只能使用actionIdenfier（他们只是点击它了吗？！他们只是解雇了吗？！或者他们是在customAction上选择？！）

//来自Apple文档：用户可以从中选择的操作标识符：

* UNNotificationDismissActionIdentifier if the user dismissed the notification
* UNNotificationDefaultActionIdentifier if the user opened the application from the notification
* the identifier for a registered UNNotificationAction for other actions

这意味着，您可以使用以下内容：

switch actionIdentifier {
case UNNotificationDismissActionIdentifier: // Notification was dismissed by user
    // Do something
    completionHandler()
case UNNotificationDefaultActionIdentifier: // App was opened from notification
    // Do something
    completionHandler()
    // Do something else
case customAction:
    completionHandler()   
default:
    completionHandler()
}

要创建自定义操作，您必须：

在类别
注册类别

有关详细信息，请参阅WWDC 2016 Advance Notifications

在AppDelegate Swift中获取本地通知的正文或标识符

1 个答案: