Question

我已经创建了一个预定的通知，我希望能够在交付后做一些事情。不是一次点击或选择，而是当它实际发送并显示在用户的屏幕上时。

我用来生成通知的代码是：

let content = UNMutableNotificationContent()
content.title = NSString.localizedUserNotificationString(forKey: "foo", arguments: nil)
content.body = NSString.localizedUserNotificationString(forKey: "bar", arguments: nil)


var dateInfo = DateComponents()
dateInfo.hour = 7
dateInfo.minute = 0
print(dateInfo.hour!)
print(dateInfo.minute!)

let trigger = UNCalendarNotificationTrigger(dateMatching: dateInfo, repeats: false)
// Create the request object.
let notificationRequest = UNNotificationRequest(identifier: "MorningAlarm", content: content, trigger: trigger)
center.add(notificationRequest)

我确信我必须在我的AppDelegate上添加一些内容，这些内容会在通知发送时做出响应，但我一直在寻找互联网，而无法在交付时找到方法而不是选择。

Answer 1

当通知到达时，系统会调用UNUserNotificationCenter对象的委托的userNotificationCenter(_:willPresent:withCompletionHandler:)方法。

 let center = UNUserNotificationCenter.current()  
 center.delegate = self // What delegation target Here is my AppDelegate




extension AppDelegate : UNUserNotificationCenterDelegate {
               // while your app is active in forground

             // Handle Notifications While Your App Runs in the Foreground

             func userNotificationCenter(_ center: UNUserNotificationCenter,
                                            willPresent notification: UNNotification,
                                            withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
                    let userInfo = notification.request.content.userInfo

                    // Change this to your preferred presentation option
                    // Play a sound.
                    //  completionHandler(UNNotificationPresentationOptions.sound)
            }

              // While App is inactive  in background
                func userNotificationCenter(_ center: UNUserNotificationCenter,
                                            didReceive response: UNNotificationResponse,
                                            withCompletionHandler completionHandler: @escaping () -> Void) {
                    let userInfo = response.notification.request.content.userInfo

                    // While App is inactive  in background


                    print(userInfo)


                    completionHandler()
                }
        }

如何检测Swift 4中何时触发预定通知

1 个答案: