Class: UIApplication

Tells the receiver to suspend the handling of touch-related events. You typically call this method before starting an animation or transition. Calls are nested with the endIgnoringInteractionEvents method.

Tells the application to begin receiving remote-control events. Remote-control events originate as commands issued by headsets and external accessories that are intended to control multimedia presented by an application. To stop the reception of remote-control events, you must call endReceivingRemoteControlEvents.

Cancels the delivery of all scheduled local notifications.

Cancels the delivery of the specified scheduled local notification. Calling this method also programmatically dismisses the notification if it is currently displaying an alert.

Returns whether an application can open a given URL resource. This method guarantees that that if openURL: is called, another application will be launched to handle it. It does not guarantee that the full URL is valid.

Removes a previously installed periodic handler block. If your VoIP application no longer needs to be woken up at periodic intervals, you can use this method to remove any previously installed handler.

Tells the app that your code has finished any asynchronous state restoration. UIKit restores your application’s state synchronously on the main thread. If you choose to perform additional state restoration on a secondary thread, call the extendStateRestoration method to inform UIKit of that fact. Call this method after you finish with your background work to let the system know that state restoration is complete.

Returns the types of notifications the application accepts. The values in the returned bit mask indicate the types of notifications currently enabled for the application. These types are first set when the application calls the registerForRemoteNotificationTypes: method to register itself with Apple Push Notification Service. Thereafter, the user may modify these accepted notification types in the Notifications preference of the Settings application. This method returns those initial or modified values. iOS does not display or play notification types specified in the notification payload that are not one of the enabled types. For example, the application might accept icon-badging as a form of notification, but might reject sounds and alert messages, even if they are specified in the notification payload.

Marks the end of a specific long-running background task. You must call this method to end a task that was started using the beginBackgroundTaskWithExpirationHandler: method. If you do not, the system may kill your application. This method can be safely called on a non-main thread.

Tells the receiver to resume the handling of touch-related events. You typically call this method when, after calling the beginIgnoringInteractionEvents method, the animation or transition concludes. Nested calls of this method should match nested calls of the beginIgnoringInteractionEvents method.

Tells the application to stop receiving remote-control events. Remote-control events originate as commands issued by headsets and external accessories that are intended to control multimedia presented by an application.

Tells the app that your code is restoring state asynchronously. UIKit restores your application’s state synchronously on the main thread. If you choose to perform additional state restoration on a secondary thread, call this method to inform UIKit of that fact. You must balance each call to this method with a matching call to the completeStateRestoration method.Calling this method is a safety precaution in the event that your app crashes at launch time due to problems restoring its state. If you call this method but do not call the matching completeStateRestoration method before a crash occurs, the system throws away any saved state information. Doing so prevents your app from crashing during subsequent launches because of issues caused by trying to restore your app’s state.

Returns whether the receiver is ignoring events initiated by touches on the screen.

Opens the resource at the specified URL. The URL can locate a resource in the same or other application. If the resource is another application, invoking this method may cause the calling application to quit so the other one can be launched.You may call canOpenURL: before calling this one to verify that there is an application that can handle it.

Presents a local notification immediately.

Register to receive notifications of the specified types from a provider via Apple Push Service. When you send this message, the device initiates the registration process with Apple Push Service. If it succeeds, the application delegate receives a device token in the application:didRegisterForRemoteNotificationsWithDeviceToken: method; if registration doesn’t succeed, the delegate is informed via the application:didFailToRegisterForRemoteNotificationsWithError: method. If the application delegate receives a device token, it should connect with its provider and pass it the token. iOS does not display or play notification types specified in the notification payload that are not one of the requested ones. For example, if alert messages are not one of the accepted notification types, iOS does not display an alert even if one is specified in the notification payload. To find out what the application’s current notification types are, call the enabledRemoteNotificationTypes method.

Schedules a local notification for delivery at its encapsulated date and time.

Sends an action message identified by selector to a specified target. Normally, this method is invoked by a UIControl object that the user has touched. The default implementation dispatches the action method to the given target object or, if no target is specified, to the first responder. Subclasses may override this method to perform special dispatching of action messages.By default, this method pushes two parameters when calling the target. These last two parameters are optional for the receiver because it is up to the caller (usually a UIControl object) to remove any parameters it added. This design enables the action selector to be one of the following:- (void)action- (void)action:(id)sender- (void)action:(id)sender forEvent:(UIEvent *)event

Dispatches an event to the appropriate responder objects in the application. Subclasses may override this method to intercept incoming events for inspection and special dispatching. iOS calls this method for public events only.

Configures a periodic handler for VoIP applications. A voice-over-IP (VoIP) application can use this method to install a handler whose job is to maintain the application’s network connection with a VoIP server. This handler is guaranteed to be called before the specified timeout value but may be called at a slightly different time interval in order to better align execution of your handler with other system tasks, and thereby save power. Your handler has a maximum of 10 seconds to perform any needed tasks and exit. If it does not exit before time expires, the application is suspended. Timeout values and handlers are not persisted between application launches. Therefore, if your application is terminated for any reason, you must reinstall the handler during the next launch cycle. For calls to this method to succeed, the application must have the voip value in the array associated with the UIBackgroundModes key in its Info.plist file. Calling this method replaces the previously installed handler and timeout values, if any.

Sets the icon of a Newsstand application to an image depicting the current issue of a publication. The Newsstand application icon is typically downloaded from the application’s server for each issue.

Hides or shows the status bar, optionally animating the transition. See the descriptions of the constants of the UIStatusBarAnimation type for more information.

Sets the application's status bar to the specified orientation, optionally animating the transition. Calling this method changes the value of the statusBarOrientation property and rotates the status bar, animating the transition if animated is YES . If your application has rotatable window content, however, you should not arbitrarily set status-bar orientation using this method. The status-bar orientation set by this method does not change if the device changes orientation.

Sets the style of the status bar, optionally animating the transition to the new style. The animation slides the status bar out toward the top of the interface.

Returns the default set of interface orientations to use for the view controllers in the specified window. This method returns the default interface orientations for the app. These orientations are used only for view controllers that do not specify their own. If your app delegate implements the application:supportedInterfaceOrientationsForWindow: method, the system does not call this method.The default implementation of this method returns the app’s default set of supported interface orientations, as defined in the UIInterfaceOrientation key of the Info.plist file. If the file does not contain that key, this method returns all interface orientations for the iPad idiom and returns all interface orientations except the portrait upside-down orientation for the iPhone idiom.

Unregister for notifications received from Apple Push Service. You should call this method in rare circumstances only, such as when a new version of the application drops support for remote notifications. Users can temporarily prevent applications from receiving remote notifications through the Notifications section of the Settings application. Applications unregistered through this method can always re-register.