Int or NSInteger as object for method argument. Objective-C

Question

I\'m having some trouble passing a number as an argument for a method:

- (void)meth2:(int)next_int;

And to call that method I need this:

<

Answer 1

It's a bit of a hack, but this works under ARC:

int next_int = 1;
[self performSelectorOnMainThread:@selector(meth2:) 
                       withObject:(__bridge id)(void*)next_int 
                    waitUntilDone:NO];

The __bridge keyword will tell the compiler to ignore reference counting under ARC, but it requires a pointer, so you first have to cast the int to a C style void pointer. When your method receives the message it will treat that object pointer as if it's an integer.

Note: If you can change the method to take an NSNumber instead of an integer, then that would be the "proper" fix. Unfortunately that's not always possible.