I discovered this feature recently, wondering it's a new feature or not.
When I received a push notification (UIRemoteNotfication) from an app (ex. Gmail) on the lock screen.
If I open the mail from GMAIL web on computer, or open the mail using Airmail, the notificaton on my phone will disappear few seconds after.
I read the https://developer.apple.com/library/ios/documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/Chapters/ProvisioningDevelopment.html document, but didn't found any reference about this feature.
Did anyone know about this feature? Thank you!
I've recorded a demo video: http://youtu.be/SHDJJnyWRec When I read email on my mac, the notification just disappears, it knows this notficaiton has been read from other place...any reference of this feature?