如何向UILocalNotification警报添加操作按钮/操作？

Question

我在我的应用中安排了本地通知，现在我在向左滑动警报时会收到一般的取消（交叉）按钮。

我很好奇我是否可以像下面的图片一样添加自定义按钮/操作？

Answer 1

我为你准备了一些剪切代码，在ViewDidLoad方法显示后10秒钟显示一个按钮的通知。

  import UIKit

    class TestViewController: UIViewController {

        let category = UIMutableUserNotificationCategory()

        override func viewDidLoad() {
            super.viewDidLoad()

            let restartAction = UIMutableUserNotificationAction()
            restartAction.identifier = "xx"
            restartAction.destructive = false
            restartAction.title = "Restart"
            restartAction.activationMode = .Background
            restartAction.authenticationRequired = false

            let categoryIdentifier = "category.identifier"
            category.identifier = categoryIdentifier
            category.setActions([restartAction], forContext: .Minimal)
            category.setActions([restartAction], forContext: .Default)

            let categories = Set(arrayLiteral: category)
            let settings = UIUserNotificationSettings(forTypes: [.Alert, .Sound], categories: categories)
            UIApplication.sharedApplication().registerUserNotificationSettings(settings)


            let localNotif = UILocalNotification()
            localNotif.alertBody = "testBody"
            localNotif.category = categoryIdentifier

            // Notification will be shown after 10 second (IMPORTANT: if you want to see notification you have to close or put app into background)
            localNotif.fireDate = NSDate().dateByAddingTimeInterval(10)
            UIApplication.sharedApplication().scheduleLocalNotification(localNotif)
        }

    }

注意：您必须在AppDelegate方法中处理操作：

func application(application: UIApplication, handleActionWithIdentifier identifier: String?,
                forLocalNotification notification: UILocalNotification, completionHandler: () -> Void) {

  completionHandler()
}

当然我的代码并不像它应该的那么干净，但你必须知道我只是为了演示目的而编写它。

此代码是用Swift编写的，但转换为Objective C应该非常简单。