iOS 5: Can I have my app “In Notification Center”

问题:

I have an iPad app in the App Store whose logic relies largely on local notifications. In other words, much that happens inside the app is triggered by the delegate method application didReceiveLocalNotification.

With today's release of iOS 5, I see that apps can be placed (via Settings) either "In Notification Center" or "Not In Notification Center." I haven't found anything in the new documentation so far, but I'm hoping there is a way to have my app "In Notification Center" by default, (and possibly even set Sounds active and the notification type to Alert) which would save me having to explicitly explain to new users that after they download & install my app, they will have to manually go and elect for the app to be "In Notification Center."

Anyone know if this is possible? Seems that since an app can register a local notification, it should be able to receive it, by default (whether it displays an alert or an item in the new Notification Center, or not). Thanks in advance.

回答1:

I've encountered the same problem. The only clue I saw in documentation is that the new Notification Center handles both local and remote notifications. Therefor I assumed that the app should register for local as it would for remote notification. Added this piece of code -

[[UIApplication sharedApplication] registerForRemoteNotificationTypes: (UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound)];

and after my app scheduled a local notification it appeared at the "In Notification Center".

BUT it seems to have no affect if my app already appears in "Not In Notification Center".. So have all of my customers that ran the app before the next update got screwed?

回答2:

Currently it seems not.

I'm in a similar situation. I'd love to be wrong about this but I've found no mention of any such API (for specifying that a local-notification using app should appear in notification center by default) in any of the places I'd expect it to be:

• Local and Push Notification guide
• UIApplication class reference
• UIKit Info PList keys
• UIApplicationDelegate Protocol reference