Question

I am trying to override the init method for a UIAlertView and customize it and I am getting the following warning? “Missing sentinel in method dispatch”.

What does this warning mean, and how can I resolve it?

- (id)initWithTitle:(NSString *)title 
            message:(NSString *)message 
           delegate:(id)delegate 
  cancelButtonTitle:(NSString *)cancelButtonTitle 
  otherButtonTitles:(NSString *)otherButtonTitles, ...
{
    if (self = [super initWithTitle:title 
                            message:message 
                           delegate:delegate 
                  cancelButtonTitle:cancelButtonTitle 
                  otherButtonTitles:otherButtonTitles]) 
    {
        // Customize alertView
    }

    return  self;
}

Answer 1

Take a look at the UIAlertView documentation, in particular:

Subclassing Notes

The UIAlertView class is intended to be used as-is and does not support subclassing. The view hierarchy for this class is private and must not be modified.

This means overriding the initWithTitle method isn’t going to be useful. You’ll need to try another approach – perhaps if you share what you’re trying to achieve people might be able to suggest an alternative (for example, using a category).