Question

How do you perform selectors with an argument? This is my code:

SEL methods=NSSelectorFromString([arrayWithMethods objectAtIndex:i]);
[self performSelector:methods withObject:self afterDelay:MAN_SPEED*i];

If my selector method has an argument, how do I specify it?

Answer 1

The string for a selector with zero arguments looks like this:

arrayWithMethods = [NSArray arrayWithObjects:@"myMethod", ... nil]

If it has one parameter, specify that by adding a colon after the method name:

arrayWithMethods = [NSArray arrayWithObjects:@"myMethod:", ... nil]

Now your myMethod will get passed ‘self’ (since that’s what you’re passing as the ‘with object”.