creating a function in Objective-C

Question

I'm a newbie in Objective-C, and I'm trying to add Markers to a mapView in my Apple app.

In my class Map, I'm trying to add a function wich adds markers.

In Map.h I add:

- (void)setMarkers:(MKMapView *)mv;

And in Map.m:

- (void)setMarkers:(MKMapView *)mv
{

CLLocationCoordinate2D newCoord = { 38.989567, -1.856283};
MapPoint *mp = [[MapPoint alloc] initWithCoordinate:newCoord title:[NSString stringWithFormat:@"Azam Home"] subTitle:@"Home Sweet Home"];
[mv addAnnotation:mp];

}

But when I try to call this function:

[setMarkers mv:map];

I have this error:

Map.m:278:6: Use of undeclared identifier 'setMarkers'

What am I missing?

Thank you in advance.

Sune Trudslev · Accepted Answer · 2012-08-20 12:01:02Z

3

You are missing self:

[self setMarkers:mv];

answered Aug 20, 2012 at 12:01

Sune Trudslev

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6 Comments

user1256477 Over a year ago

It also works changing - to + and [Map setMarkers:mv] Thanks!

Sune Trudslev Over a year ago

Changing - to + makes the method static, but if that works, that's fine. :)

jlehr Over a year ago

@SuneTrudslev There are no static methods in Objective-C. Methods declared with a + are class methods, not static methods.

Sune Trudslev Over a year ago

What is the difference, in your opinion, between static and class method?

Hot Licks Over a year ago

Nitpickers will object to the term "static" for class methods in Objective-C, but at the 10,000 foot level (or even the 10 foot level) they're the same. On close examination there are distinctions in that a class method is still a dynamic method, only one "sent" to the class object rather than a class instance. "Static", on the other hand, basically represents a "hard coded" linkage where the address of the method is effectively stored in the calling instruction.

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