我添加了代码，以便在单击标注附件 View 的警报操作时发送推送通知。
func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
if view.rightCalloutAccessoryView == control {
//right accessory
let notificationPublisher = NotificationPublisher()
let sendNotification = { (action:UIAlertAction!) -> Void in
print("Action handled")
notificationPublisher.sendNotification(title:"Hey",subtitle:"We made a",body:"notification",delayInterval: nil)
}
print("Button Press")
let alertController = UIAlertController(title: "", message: "This will start alerts", preferredStyle: .alert)
alertController.addAction(UIAlertAction(title: "Yes", style: .default, handler: sendNotification))
alertController.addAction(UIAlertAction(title: "No", style: .cancel, handler: nil))
self.present(alertController, animated: true, completion: nil)
} else {
// left Accessory
}
}
“Yes”UIAlertAction 使用 sendNotification 作为其处理程序。这应该发送本地通知。它成功打印“Action Handled”，但不发送通知。
这是NotificationsPublisher.swift 文件
import Foundation
import UserNotifications
class NotificationPublisher: NSObject{
func sendNotification(title: String,
subtitle: String,
body: String,
delayInterval: Int?){
let notificationContent = UNMutableNotificationContent()
notificationContent.title = title
notificationContent.subtitle = subtitle
notificationContent.body = body
var delayTimeTrigger: UNTimeIntervalNotificationTrigger?
if let delayInterval = delayInterval {
delayTimeTrigger = UNTimeIntervalNotificationTrigger(timeInterval: TimeInterval(delayInterval), repeats: false)
}
notificationContent.sound = UNNotificationSound.default
UNUserNotificationCenter.current().delegate = self
let request = UNNotificationRequest(identifier: "TestLocalNotification", content: notificationContent, trigger: delayTimeTrigger)
UNUserNotificationCenter.current().add(request){error in
if let error = error {
print(error.localizedDescription)
}
}
}
}
extension NotificationPublisher: UNUserNotificationCenterDelegate {
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
print("The notification is about to be presented")
completionHandler([.badge,.sound,.alert])
}
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
let identifier = response.actionIdentifier
switch identifier {
case UNNotificationDismissActionIdentifier:
print("The notification was dismissed")
completionHandler()
case UNNotificationDefaultActionIdentifier:
print("The user opened the app from the notification")
default:
print("The default case was called")
completionHandler()
}
}
}
最佳答案
在mapView函数中使用let notificationPublisher = NotificationPublisher()会导致问题。我通过将 private let notificationPublisher = NotificationPublisher() 放在 viewDidLoad() 上方，将其设为 ViewController 的属性。然后，在mapView中的sendNotification函数中，将其引用为
self.notificationPublisher.sendNotification(title:"Title",subtitle:"Subtitle",body:"notification",delayInterval: nil)
关于swift - 发送本地通知，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/54846618/