How to do something on a push notification?

Question

iOS

Hello! I just can't figure out how to bind some kind of action to a notification? Well, that is, for example, a notification about a new post has arrived, when you click on it, you need to open this same post. Well, if the application is running, then for example update the list of posts.

Answer 1

Look towards the method UIApplicationDelegate
-(void) application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
It twitches when the user opens an already running application, but in the background, with a tap. Or when a push comes to an application that is currently active.