How to implement NSArray method in IBAction?

Question

I have been reading the code that was suggested to me in this thread here: How to get pixel data from a UIImage (Cocoa Touch) or CGImage (Core Graphics)?

I am wondering how I would implement the code in the following manner:

-(IBAction)getRGB:(id)sender {
    // Call getRGBAsFromImage here when pressed. 
}

+ (NSArray*)getRGBAsFromImage:(UIImage*)image atX:(int)xx andY:(int)yy count:(int)count {
   ...
}

Thank you very much.

Edit for 0x90:

-(IBAction)getRGB:(id)sender {    
    UIImage *image = [UIImage imageNamed:@"IMG_0121.JPG"];
    [self getRGBAsFromImage:image atX:40 andY:40 count:40];
}

Answer 1

You would define a strong/retained (depends on whether you use ARC) property to store the returned NSArray and then call the method as such:

-(IBAction)getRGB:(id)sender {
    propertyYouDefined = [self getRGBAsFromImage:image atX:42 andY:42 count:42];
}