[英]Push notification in-app badge icon not updating when clicking on app icon
我在获取应用内徽章图标标签正确更新时遇到了一些麻烦。 我想要这样做的东西:
每当收到推送通知时,都会显示此红色图标。 我正确地在iPhone上的应用程序图标上获得了推送通知徽章; 但是,仅当我按横幅上的推送通知时,或者如果我已经在应用程序中时,该应用程序中的红色图标才会出现。
我的问题是,如果我按实际的应用程序图标,它不会出现。 我希望即使在应用程序处于后台的情况下,也要更新应用程序内的标签,就像facebook应用程序在Notifications Globe图标上方具有图标的方式一样。
我将在AppDelegate中显示相关方法(省略令牌等):
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
let userInfo: AnyObject? = launchOptions?[UIApplicationLaunchOptionsRemoteNotificationKey]
if userInfo != nil {
handleRemoteNotifications(application, userInfo: userInfo! as! NSDictionary)
return true
}
if application.applicationState != UIApplicationState.Background {
let oldPushHandlerOnly = !self.respondsToSelector(Selector("application:didReceiveRemoteNotification:fetchCompletionHandler:"))
let noPushPayload: AnyObject? = launchOptions?[UIApplicationLaunchOptionsRemoteNotificationKey]
if oldPushHandlerOnly || noPushPayload != nil {
PFAnalytics.trackAppOpenedWithLaunchOptionsInBackground(launchOptions, block: nil)
}
}
return true
}
func handleRemoteNotifications(application: UIApplication, userInfo: NSDictionary) {
if let type: String = userInfo["type"] as? String {
switch (type) {
case "follow":
NSNotificationCenter.defaultCenter().postNotificationName("commentNotification", object: self)
case "comment":
NSNotificationCenter.defaultCenter().postNotificationName("commentNotification", object: self)
default:
return
}
}
}
func applicationDidBecomeActive(application: UIApplication) {
if (application.applicationIconBadgeNumber != 0) {
application.applicationIconBadgeNumber = 0
}
let installation = PFInstallation.currentInstallation()
if installation.badge != 0 {
installation.badge = 0
installation.saveEventually()
}
}
func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject], fetchCompletionHandler handler: (UIBackgroundFetchResult) -> Void) {
if let badgeNumber: Int = userInfo["badge"] as? Int {
application.applicationIconBadgeNumber = badgeNumber
}
handleRemoteNotifications(application, userInfo: userInfo)
if application.applicationState == .Inactive {
PFAnalytics.trackAppOpenedWithRemoteNotificationPayloadInBackground(userInfo, block: nil)
}
handler(.NewData)
}
func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject]) {
if application.applicationState == .Inactive {
// The application was just brought from the background to the foreground,
// so we consider the app as having been "opened by a push notification."
PFAnalytics.trackAppOpenedWithRemoteNotificationPayloadInBackground(userInfo, block: nil)
handleRemoteNotifications(application, userInfo: userInfo)
}
}
在ViewController中 ,我在viewDidAppear中调用方法,并使其在每次接收到推送通知时更新标签并将数字增加1:
override func viewDidAppear(animated: Bool) {
super.viewDidAppear(animated)
followLabelNumber = NSUserDefaults.standardUserDefaults().integerForKey("followNumberKey")
commentLabelNumber = NSUserDefaults.standardUserDefaults().integerForKey("commentNumberKey")
NSNotificationCenter.defaultCenter().removeObserver(self, name: "followNotification", object: nil)
NSNotificationCenter.defaultCenter().addObserver(self, selector:"followNotificationReceived:", name:"followNotification", object: nil)
NSNotificationCenter.defaultCenter().removeObserver(self, name: "commentNotification", object: nil)
NSNotificationCenter.defaultCenter().addObserver(self, selector:"commentNotificationReceived:", name:"commentNotification", object: nil)
self.navigationController?.navigationBarHidden = true
}
func makeIncrementer(forIncrement amount: Int) -> () -> Int {
var runningTotal = 0
func incrementer() -> Int {
runningTotal += amount
return runningTotal
}
return incrementer
}
func followNotificationReceived(notification: NSNotification) {
if let number = followLabelNumber {
let aNumber = makeIncrementer(forIncrement: 1)
followLabelNumber = number + aNumber()
NSUserDefaults.standardUserDefaults().setInteger(followLabelNumber!, forKey: "followNumberKey")
NSUserDefaults.standardUserDefaults().synchronize()
profileNotificationLabel.hidden = false
profileNotificationLabel.text = String(followLabelNumber!)
hasReceivedFollowNotification = true
}
}
func commentNotificationReceived(notification: NSNotification) {
if let number = commentLabelNumber {
let aNumber = makeIncrementer(forIncrement: 1)
commentLabelNumber = number + aNumber()
NSUserDefaults.standardUserDefaults().setInteger(commentLabelNumber!, forKey: "commentNumberKey")
NSUserDefaults.standardUserDefaults().synchronize()
commentsNotificationLabel.hidden = false
commentsNotificationLabel.text = String(commentLabelNumber!)
hasReceivedCommentNotification = true
}
}
deinit {
NSNotificationCenter.defaultCenter().removeObserver(self)
}
非常感谢任何人的帮助,因为我已经坚持了几天。
编辑:更改标题
首先,由于您正在使用Parse,因此您不需要自己处理application.applicationIconBadgeNumber
:
//You don't need these...
if (application.applicationIconBadgeNumber != 0) {
application.applicationIconBadgeNumber = 0
}
//Because these lines will set the application's icon badge to zero
let installation = PFInstallation.currentInstallation()
if installation.badge != 0 {
installation.badge = 0
installation.saveEventually()
}
您也不需要:
//Because Parse handles that for you
if let badgeNumber: Int = userInfo["badge"] as? Int {
application.applicationIconBadgeNumber = badgeNumber
}
另外,问题似乎是您在加载View Controller时没有更新按钮的标志。 您只有在收到新通知并且View Controller可见时才更新它们。 简而言之,在您的View Controller上尝试以下操作:
override func viewDidAppear(animated: Bool) {
super.viewDidAppear(animated)
followLabelNumber = NSUserDefaults.standardUserDefaults().integerForKey("followNumberKey")
commentLabelNumber = NSUserDefaults.standardUserDefaults().integerForKey("commentNumberKey")
//BEGIN SUGGESTED CODE
profileNotificationLabel.hidden = followLabelNumber > 0
profileNotificationLabel.text = String(followLabelNumber!)
commentsNotificationLabel.hidden = commentLabelNumber > 0
commentsNotificationLabel.text = String(commentLabelNumber!)
//END SUGGESTED CODE
NSNotificationCenter.defaultCenter().removeObserver(self, name: "followNotification", object: nil)
NSNotificationCenter.defaultCenter().addObserver(self, selector:"followNotificationReceived:", name:"followNotification", object: nil)
NSNotificationCenter.defaultCenter().removeObserver(self, name: "commentNotification", object: nil)
NSNotificationCenter.defaultCenter().addObserver(self, selector:"commentNotificationReceived:", name:"commentNotification", object: nil)
self.navigationController?.navigationBarHidden = true
}
最后但并非最不重要的一点是,每当收到远程通知时,就将其传递到AppDelegate中的 func handleRemoteNotifications(application: UIApplication, userInfo: NSDictionary)
。 反过来,这会将NSNotification
到正在监听的对象。 但是,可能存在或可能没有ViewController,因为在应用程序处于后台时可能已将其释放。 因此,当您收到远程通知时,这些代码行将永远不会被调用:
NSUserDefaults.standardUserDefaults().setInteger(followLabelNumber!, forKey: "followNumberKey")
NSUserDefaults.standardUserDefaults().synchronize()
尝试将以上各行移至AppDelegate的func handleRemoteNotifications(application: UIApplication, userInfo: NSDictionary)
方法。
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