How to pass userInfo in NSNotification?

Question

I am trying to send some data using NSNotification but get stuck. Here is my code:

// Posting Notification
NSDictionary *orientationData;
if(iFromInterfaceOr         


        

Answer 1

Your selector must have : to accept parameters.
e.g.

@selector(orientationChanged:)

then in the method declaration it can accept the NSNotification parameter.

Answer 2

You get an NSNotification object passed to your function. This includes the name, object and user info that you provided to the NSNotificationCenter.

- (void)orientationChanged:(NSNotification *)notification
{
    NSDictionary *dict = [notification userInfo];
}

Answer 3

In swift To get userinfo object

     let dict = notification.userInfo
     print(dict)

Answer 4

You are posting the notification correctly. Please modify the Notification Observer like following.

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(orientationChanged:)
 name:@"Abhinav" object:nil];

- (void)orientationChanged:(NSNotification *)notification
{
    NSDictionary *dict = [notification userInfo];
}

I hope, this solution will work for you..