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    <p>You can't do this, at least not in the way you're wanting to do it. What you want to do (pass on the variable arguments) requires having an initializer on <code>UIAlertView</code> that accepts a <code>va_list</code>. There isn't one. However, you can use the <code>addButtonWithTitle:</code> method:</p> <pre><code>+ (void)showWithTitle:(NSString *)title message:(NSString *)message delegate:(id)delegate cancelButtonTitle:(NSString *)cancelButtonTitle otherButtonTitles:(NSString *)otherButtonTitles, ... { UIAlertView *alert = [[[UIAlertView alloc] initWithTitle:title message:message delegate:delegate cancelButtonTitle:cancelButtonTitle otherButtonTitles:nil] autorelease]; if (otherButtonTitles != nil) { [alert addButtonWithTitle:otherButtonTitles]; va_list args; va_start(args, otherButtonTitles); NSString * title = nil; while(title = va_arg(args,NSString*)) { [alert addButtonWithTitle:title]; } va_end(args); } [alert show]; } </code></pre> <p>This is, of course, very problem-specific. The real answer is "you can't implicitly pass on a variable argument list to a method/function that does not have a <code>va_list</code> parameter". You must therefore find a way around the problem. In the example you gave, you wanted to make an alertView with the titles you passed in. Fortunately for you, the <code>UIAlertView</code> class has a method that you can iteratively call to add buttons, and thereby achieve the same overall effect. If it did not have this method, you'd be out of luck.</p> <p>The other really messy option would be to make it a variadic macro. A variadic macro looks like this:</p> <pre><code>#define SHOW_ALERT(title,msg,del,cancel,other,...) { \ UIAlertView *_alert = [[[UIAlertView alloc] initWithTitle:title message:msg delegate:del cancelButtonTitle:cancel otherButtonTitles:other, ##__VA_ARGS__] autorelease]; \ [_alert show]; \ } </code></pre> <p>However, even with the variadic macro approach, you'd still need a custom macro for each time you wanted to do this. It's not a very solid alternative.</p>
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    1. COA cool approach, but I was hoping to use this technique in other places where a method like this may not exist to help out with the argument list. Really no way to create a nil terminated list dynamically?
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    2. CO@Squeegy you can maybe fake a `va_list` (see cocoawithlove link in @Don's comment), but unless the method you want to invoke takes a `va_list` (as opposed to `...`), you can't use it.
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    3. COFortunately, Dave's solution works for your specific situation.
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