Question

I have made my own push notification server for my iPhone app. I am sending different push notifications to client devices. Now with one special of the notification, I want to call a specific function in appDelegate or anywhere.

How can I implement this?

Answer 1

you cannot specify a function to call DIRECTLY

when the app is launched, -(BOOL)application:(UIApplication *)app didFinishLaunchingWithOptions:(NSDictionary *)launchOptions is called and passed the note in the options under UIApplicationLaunchOptionsRemoteNotificationKey

when the app is running, you have application:didReceiveRemoteNotification:

---

you could pass the NAME of a method to call with the notification! so:

...
NSString *methodName = [notificationUserInfo objectForKey:@"methodName"];
[self performSelector:NSSelectorFromString(methodName)];
...

the server side JSON would contain the methodName key:
as seen here we can Include all we like APNS JSON PAYLOAD – more arguments

{"aps":{"alert":"APP_NAME': BLA_BLA_BLA","sound":"default"}, "methodName":"xy"}