Ios 为什么取消本地通知会触发重复的本地通知（生成该本地通知的通知）？
我有一个iOS应用程序，它有一个（每天）重复的本地通知，当Ios 为什么取消本地通知会触发重复的本地通知（生成该本地通知的通知）？,ios,notifications,Ios,Notifications,我有一个iOS应用程序，它有一个（每天）重复的本地通知，当某些条件满足时，会触发一个新的本地通知。必须在应用程序（带有横幅）和通知视图中显示的本地通知。我已经在AppDelegate中大致实现了它，作为概念证明，它是有效的（tm） 从横幅中的一个块中，我使用取消本地通知从通知视图中删除一次性本地通知。但令人惊讶的是，当触发UIApplication.sharedApplication（）.cancelLocalNotification（）时，会重新触发重复的本地通知-为什么？我该如何防止这种情况
某些通知视图中显示的本地通知。我已经在AppDelegate中大致实现了它，作为概念证明，它是有效的（tm）
从横幅中的一个块中，我使用取消本地通知
从通知视图
中删除一次性
本地通知。但令人惊讶的是，当触发UIApplication.sharedApplication（）.cancelLocalNotification（）
时，会重新触发重复的本地通知-为什么？我该如何防止这种情况
...
import JCNotificationBannerPresenter
...
class AppDelegate: UIResponder, UIApplicationDelegate {
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
// Setup local notifications support
let notificationType: UIUserNotificationType
= [UIUserNotificationType.Alert, UIUserNotificationType.Badge, UIUserNotificationType.Sound]
let settings = UIUserNotificationSettings(forTypes: notificationType,
categories: nil)
application.registerUserNotificationSettings(settings)
// Clean up and reset
application.applicationIconBadgeNumber = 0
application.cancelAllLocalNotifications()
NSLog("Setup one repeating notification")
let n = UILocalNotification()
n.fireDate = NSDate(timeIntervalSinceNow: 15)
n.soundName = UILocalNotificationDefaultSoundName
n.timeZone = NSTimeZone.defaultTimeZone()
n.applicationIconBadgeNumber = 0
n.userInfo = ["id": "dailyreminder"]
n.repeatInterval = NSCalendarUnit.Day
UIApplication.sharedApplication().scheduleLocalNotification(n)
return true
}
...
func application(application: UIApplication,
didReceiveLocalNotification notification: UILocalNotification) {
NSLog("application(... didReceiveLocalNotification/////////////////////////")
NSLog(notification.description)
let state = application.applicationState
if let userInfo = notification.userInfo,
let id = userInfo["id"] as? String
where id != "dailyreminder" {
switch state {
case UIApplicationState.Active:
NSLog(String(format: "%@ > UIApplicationState.Active", id))
JCNotificationCenter.enqueueNotificationWithTitle(
notification.alertTitle,
message: notification.alertBody,
tapHandler: { () -> Void in
NSLog("Banner click ///////////////////////////////////////////////")
// 1. Go to somewhere in the app
// 2. Cancel the notification from the `notifications view`
UIApplication.sharedApplication().cancelLocalNotification(notification)
// `cancel` results in an additional call up of the "dailyreminder" ~ why?
})
case UIApplicationState.Inactive:
NSLog(String(format: "%@ > UIApplicationState.Inactive", id))
// This is called up when user selects the notification within the `notifications view`
// and canceled by user touch.
default:
let desc = state.rawValue.description
NSLog(String(format: "%@ > Unexpected app state: %@", id, desc))
}
}
if let userInfo = notification.userInfo,
let id = userInfo["id"] as? String
where id == "dailyreminder" {
NSLog("Repeating daily reminder was called ~ lets fire a noti to show the user")
// Some condition checks that need to be true before firing the local notification
if true {
let n = UILocalNotification()
n.fireDate = nil
n.timeZone = NSTimeZone.defaultTimeZone()
n.applicationIconBadgeNumber = ++UIApplication.sharedApplication().applicationIconBadgeNumber
n.userInfo = [
"id": "onetimenotification"
]
n.alertTitle = "One time notification title"
n.alertBody = "One time notification body"
UIApplication.sharedApplication().scheduleLocalNotification(n)
}
}
}
...
更新1
我已经举了一个完整的例子
更新2
好吧，我再拍一次。将取消通知置于块之外可以工作（但不适合场景）：
我还想消除jNotificationBannerPresenter
导致异常行为的原因，因此我尝试使用新的ios AltertControl：
case UIApplicationState.Active:
NSLog(String(format: "%@ > UIApplicationState.Active", id))
let alertController = UIAlertController(
title: "Daily reminder title",
message: "Daily reminder description.",
preferredStyle: .Alert)
let cancelAction = UIAlertAction(title: "Cancel", style: .Cancel) { _ in
NSLog("Do nothing ////////////////////// ")
}
alertController.addAction(cancelAction)
let OKAction = UIAlertAction(title: "OK", style: .Default) { (action) in
NSLog("OK was pressed ////////////// ")
UIApplication.sharedApplication().cancelLocalNotification(notification)
}
alertController.addAction(OKAction)
self.window!.makeKeyAndVisible()
let v = self.window!.rootViewController!
v.presentViewController(alertController,
animated: true,
completion: {})
不幸的是，这确实重现了这种奇怪的行为，所以它尝起来就像是块和UIApplication.sharedApplication（）的组合。取消通知（notification）
…您没有取消重复通知，即您的didReceiveLocalNotification
方法中的每日提醒通知。您已取消通知where id！=“DailReminder”
而您重复的通知具有id==“DailReminder”
。请在didReceiveLocalNotification
中检查您的条件。对不起，我的问题/描述不清楚。我不想删除重复通知，但只想在单击应用程序内的横幅时删除一次性
通知。由于onetime
通知已被触发，我无法在UIApplication.sharedApplication（）.scheduledLocalNotifications
中通过userInfo[“id”]查找它。我真的不明白您为什么要在收到通知时安排另一个通知。我的理解是，当触发重复通知时，您需要执行一些任务。正确的？如果是这种情况，那么在didReceiveLocalNotification中检查该通知的用户信息&如果该通知具有id==“daily reminder”，则执行任务、显示自定义视图或任何您想要的内容。不需要安排另一个通知，然后执行您想要的任务。这很公平。重复的每日提醒通知必须始终触发。在某些情况下可能不会触发一次性通知。在本例中，这些条件总是设置为true。如果触发了onetime
通知，我希望在应用程序中能够从全局/系统通知视图中删除onetime
通知。如果我解释得很尴尬，请原谅。我仍然相信用例：）好的，如果您的一次性通知在某些条件下不会被触发，那么您可以在didReceiveLocalNotification方法中使用您的id条件和该条件。
case UIApplicationState.Active:
NSLog(String(format: "%@ > UIApplicationState.Active", id))
let alertController = UIAlertController(
title: "Daily reminder title",
message: "Daily reminder description.",
preferredStyle: .Alert)
let cancelAction = UIAlertAction(title: "Cancel", style: .Cancel) { _ in
NSLog("Do nothing ////////////////////// ")
}
alertController.addAction(cancelAction)
let OKAction = UIAlertAction(title: "OK", style: .Default) { (action) in
NSLog("OK was pressed ////////////// ")
UIApplication.sharedApplication().cancelLocalNotification(notification)
}
alertController.addAction(OKAction)
self.window!.makeKeyAndVisible()
let v = self.window!.rootViewController!
v.presentViewController(alertController,
animated: true,
completion: {})