CODEWITHSUNDEEP
iphoneobjective-c
Vadoff
Vadoff

Reputation: 9419

How do I send messages to my view controller instance?

I want to be able to send a message from my mkmapview delegate class to one of my view controllers. I normally send messages by allocating/initing a new instance of that class, but this time I'm trying to send a message to an instance that's already there.

What are the various ways I can do this? Is there a preferred way?

Edit:

I found my solution. Not sure if it's the best way, but it's certainly the easiest as far as I can see and perfect for what I need.

What I did was have a static myViewController variable inside my viewController, then have it be set to self in my viewDidLoad. Last, I added a static method to get the static variable.

Upvotes: 0

Views: 110

Answers (2)

Darshan Prajapati
Darshan Prajapati

Reputation: 843

I think you should use NSNotification and NSNotificationCenter to pass messages. Just see the iPhone SDK documentation and you will get how to do that.

Upvotes: 1

Rudy Velthuis
Rudy Velthuis

Reputation: 28806

Either I don't understand what you are asking, or it is quite simple. You should have a reference to the instance (say it is called myInstance), and then you can simply send a message like:

[myInstance myMessage: param1 bla: param2];

Of course you should only send messages the receiver (myInstance) can understand. Which they are, depends on the class of the receiver, and on any categories that are defined for its class and in scope.

Upvotes: 1

Related Questions