ios8 UIApplication API使用说明

- (void)registerUserNotificationSettings:(UIUserNotificationSettings *)

notificationSettings

After
calling this method, the app calls the
application:didRegisterUserNotificationSettings:
 method
of its app delegate to report the results. You can use that method to determine if your request was granted or denied by the user.

Available
in iOS 8.0 and later.

-
(UIUserNotificationSettings*)currentUserNotificationSettings

If
you configure local or push notifications with unavailable notification types, the system does not display the corresponding alerts to the user. The system does still deliver the local and push notifications to your app.

Available
in iOS 8.0 and later.

-
(void)registerForRemoteNotifications

Call
this method to initiate the registration process with Apple Push Service. If registration succeeds, the app calls your app delegate object’s
application:didRegisterForRemoteNotificationsWithDeviceToken:
method
and passes it a device token. You should pass this token along to the server you use to generate push notifications for the device. If registration fails, the app calls its app delegate’s[code]application:didFailToRegisterForRemoteNotificationsWithError:

method
instead.[/code]

Available
in iOS 8.0 and later.

-
(BOOL)isRegisteredForRemoteNotifications

This
method reflects only the successful completion of the remote registration process that begins when you call the
registerForRemoteNotifications
 method.
This method does not reflect whether push notifications are actually available due to connectivity issues. The value returned by this method takes into account the user’s preferences for receiving push notifications.

Available
in iOS 8.0 and later.

NSString
*const
UIApplicationOpenSettingsURLString;

UIApplicationOpenSettingsURLString

Used to create a URL that you can pass to the

openURL:

method.
When you open the URL built from this string, the system launches the Settings app and displays the app’s custom settings, if it has any.Available in iOS 8.0 and later.

NSString
*const
UIApplicationKeyboardExtensionPointIdentifier;

The identifier for custom keyboards. To reject the use of custom keyboards in your app, specify this constant in your implementation of the

application:shouldAllowExtensionPointIdentifier:

delegate
method.Available in iOS 8.0 and later.