comparing the action in iphone

Question

user can only listen to three songs before he/she has to login or else they won't be able to listen anymore. for that can I compare IBAction like that (if(IBAction < 3)he stop and he have login for more song. This same question as I Ask before I am trying to solve that give me hint to do.

thanks in advance

Answer 1

You should introduce a member of type int. Initialize it with 0. Each time your play action is called, check if it has reached your threshold. If yes, display the login screen, otherwise increase it by 1.

Answer 2

IBAction is simply a marker for interface builder so that it knows what methods to provide connections for. If you look at in UINibDecleartions.h you will find

#ifndef IBAction 
#define IBAction void
#endif

So no, you can do anything in code with IBAction. What you are looking for is probably something like

//Header
@interface SomeController : UIViewController {

    NSInteger numTimesPressedButton;
} 
-(IBAction)doSomething:(id)sender;

....

//.m File

- (id)initWithNibName:(NSString *)aNibName bundle:(NSBundle *)aNibBundle{

    self = [super initWithNibName:aNibName bundle:aNibBundle];
    if(self != nil)
    {   
        numTimesPressedButton = 0;
        ...
    }
    return self;
}

-(IBAction)doSomething:(id)sender{

    numTimesPressedButton++;
    if (numTimesPressed > 3)
        [someThing doSomeThingElse];
    ...
}