How can I call a method in Objective-C?

Question

I am trying to build an iPhone app. I created a
method like this:

- (void)score {
    // some code
}

and I have tried to call it in an other method like this:

- (void)score2 {
    @selector(score);
}

But it does not work. So, how do I call a method correctly?

Answer 1

I think what you're trying to do is:

-(void) score2 {
    [self score];
}

The [object message] syntax is the normal way to call a method in objective-c. I think the @selector syntax is used when the method to be called needs to be determined at run-time, but I don't know objective-c well enough to give you more information on that.

Answer 2

I suggest you read The Objective-C Programming Language. The part about messaging is specifically what you want here, but the whole thing will help you get started. After that, maybe try doing a few tutorials to get a feel for it before you jump into making your own apps.

Answer 3

To send an objective-c message in this instance you would do

[self score];

I suggest you read the Objective-C programming guide Objective-C Programming Guide