Pass different parameters to an IBAction

Question

My iPhone app has many buttons and I want all the buttons to call the same method, but with different parameters.

For example I want tapping one button to call the m

Answer 1

You don't. The only parameter is the sender object, which you may use to have a different behavior, but what I'd do is define 2 action methods, which simply in turn call the same method with a different parameter, i.e. you'd have:

- (IBAction)button1:(id)sender
{
    [self doStuff:kButton1];
}

- (IBAction)button2:(id)sender
{
    [self doStuff:kButton2];
}

- (void)doStuff:(ParamType)param;
{
    ...
}

In defense of that method (no pun intended), I'd add that it makes clearer when you review your UI with Interface Builder to see that different buttons actually have different effects, which is harder to tell if they all call whateverAction: