Question

When I use loadNibNamed method to load a xib file, how to pass some parameter?

[NSBundle loadNibNamed:xibName owner:[NSApplication sharedApplication]];

Answer 1

In order to pass parameters when instantiating your class, add a wrapper to the
loadNibNamed:owner: method and pass your parameters to this wrapper.

Here is the code snippet for this:

(ClassName *) GetInstanceWithParameter1:(ParameterType *)param1 
                            andParameter2:(ParameterType *)param2 {
     ClassName *instance = [[ClassName alloc] initWithNibNamed:nibName               
                                                        bundle:nibBundle];
     instance -> P1 = param1;
     instance -> P2 = param2;
     return instance;
}

Here P1 and P2 are your class level variable corresponding to param1 and param2. Now you can use them anywhere in the code.