我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，它不会出现在通知下方。通知正在出现，但通知底部缺少操作按钮。 appdelegate 代码如下。

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" {
    }
  }
}

最佳答案

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

希望这对您有所帮助。 :)

关于ios - 操作按钮未出现在通知 iOS 10 中，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/41740193/