操作按钮未出现在通知iOS 10中

我正在我的应用程序中使用本地推送通知。在iOS 10中为通知添加操作按钮时，它不会显示在通知下方。通知正在出现，但通知底部缺少操作按钮。appdelegate代码如下所示

import UIKit
import CoreData
import UserNotifications

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

  var window: UIWindow?


  func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.

    UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound]) {(accepted, error) in
      if !accepted {
        print("Notification access denied.")
      }
    }
    let action = UNNotificationAction(identifier: "markCompleted", title: "Mark as Completed", options: [])
    let category = UNNotificationCategory(identifier: "todoList", actions: [action], intentIdentifiers: [], options: [])
    UNUserNotificationCenter.current().setNotificationCategories([category])
    return true
  }

  func applicationWillResignActive(_ application: UIApplication) {
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
    // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
  }

  func applicationDidEnterBackground(_ application: UIApplication) {
    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
  }

  func applicationWillEnterForeground(_ application: UIApplication) {
    // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
  }

  func applicationDidBecomeActive(_ application: UIApplication) {
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
  }

  func applicationWillTerminate(_ application: UIApplication) {
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
    // Saves changes in the application's managed object context before the application terminates.
    self.saveContext()
  }


  // MARK: - user defined functions

  func notifyWithinApp(_ message: String) {
    Utils.sharedInstance.notifyLocally(message)
  }

  func scheduleNotification(at date: Date, body: String) {
    let calendar = Calendar(identifier: .gregorian)
    let components = calendar.dateComponents(in: .current, from: date)
    let newComponents = DateComponents(calendar: calendar, timeZone: .current, month: components.month, day: components.day, hour: components.hour, minute: components.minute)

    let trigger = UNCalendarNotificationTrigger(dateMatching: newComponents, repeats: false)

    let content = UNMutableNotificationContent()
    content.title = "Dont Forget"
    content.body = body
    content.sound = UNNotificationSound.default()
    content.categoryIdentifier = "todoList"

    let request = UNNotificationRequest(identifier: "textNotification", content: content, trigger: trigger)

    UNUserNotificationCenter.current().delegate = self
    //UNUserNotificationCenter.current().removeAllPendingNotificationRequests()
    UNUserNotificationCenter.current().add(request) {(error) in
      if let error = error {
        print("Uh oh! We had an error: \(error)")
      }
    }
  }


  // MARK: - Core Data stack

  lazy var persistentContainer: NSPersistentContainer = {
      /*
       The persistent container for the application. This implementation
       creates and returns a container, having loaded the store for the
       application to it. This property is optional since there are legitimate
       error conditions that could cause the creation of the store to fail.
      */
      let container = NSPersistentContainer(name: "ListTodo")
      container.loadPersistentStores(completionHandler: { (storeDescription, error) in
          if let error = error as NSError? {
              // Replace this implementation with code to handle the error appropriately.
              // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.

              /*
               Typical reasons for an error here include:
               * The parent directory does not exist, cannot be created, or disallows writing.
               * The persistent store is not accessible, due to permissions or data protection when the device is locked.
               * The device is out of space.
               * The store could not be migrated to the current model version.
               Check the error message to determine what the actual problem was.
               */
              fatalError("Unresolved error \(error), \(error.userInfo)")
          }
      })
      return container
  }()

  // MARK: - Core Data Saving support

  func saveContext () {
      let context = persistentContainer.viewContext
      if context.hasChanges {
          do {
              try context.save()
          } catch {
              // Replace this implementation with code to handle the error appropriately.
              // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
              let nserror = error as NSError
              fatalError("Unresolved error \(nserror), \(nserror.userInfo)")
          }
      }
  }

}

@available(iOS 10, *)
extension AppDelegate : UNUserNotificationCenterDelegate {

  // Receive displayed notifications for iOS 10 devices.
  func userNotificationCenter(_ center: UNUserNotificationCenter,
                              willPresent notification: UNNotification,
                              withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
    // Print message ID.
    // Print full message.
  }

  func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
    if response.actionIdentifier == "markCompleted" {
    }
  }
}

---

按钮不会单独出现。在受支持的设备上，您必须3D触摸通知以显示内容或按钮。在不受支持的设备上，您可以尝试向下或向左/向右滑动按钮以显示

---

希望这有帮助。：）

面临同样的问题。3D触摸功能的可用性对于显示按钮至关重要。在iPhone 5s模拟器中运行你的应用程序-在向左滑动通知后，按钮将出现。

事实上，我没有滑动通知。然后我发现只有当你刷通知时按钮才会出现。苹果糟糕的用户界面/用户体验设计。

你解决了这个问题吗？@ZuzanaPaulis yesDude，非常感谢，帮我节省了好几个小时的时间。哇，我不知道这是一个PEBKAC问题，还是真的不直观的用户体验。这篇文章展示了iOS9/10和旧版/3D触摸设备之间的区别。正如纽约技术工程师所说。我也面临同样的问题，但在按下附件后，动作按钮出现了。呸！！谢谢甘尼什。