How to handle push notifications if the application is already running?

Question

How do we handle push notifications if the application is already running ? I want to show an alert if the application is running (instead of a push notification alert). Only if the application is not running, then show a push notification alert.

Also, if I send a payload to APNs, how can I create an alert with a cancel button?

Answer 1

You can implement application:didReceiveRemoteNotification:

Here is a possible sample code:

- (void)application:(UIApplication *)application    didReceiveRemoteNotification:(NSDictionary *)userInfo {   NSString *message = nil;   id alert = [userInfo objectForKey:@"alert"];   if ([alert isKindOfClass:[NSString class]]) {     message = alert;   } else if ([alert isKindOfClass:[NSDictionary class]]) {     message = [alert objectForKey:@"body"];   }   if (alert) {     UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Title"                                        message:@"AThe message."  delegate:self                              cancelButtonTitle:@"button 1"                              otherButtonTitles:@"button", nil];     [alertView show];     [alertView release];   }