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iOS

Posted by P M
P M
7,320 Points

Should I strongly type sender in IBAction?

I am wiring an IBAction from a UIBarButton. Should I keep the sender type as id? In this case, I've seen some examples of typecasting the sender to the type of the caller. But can I just explicitly type (UIBarButton *)sender? What is the established best practice? In what case would I need to leave it as id and treat it as it knows what is doing, in what case should I type cast id later or just explicitly strongly type it in the method name (like (UIButton *)sender)?

1 Answer

Colin Jackson
Colin Jackson
4,829 Points
Colin Jackson
Colin Jackson
4,829 Points

In situations like that, I'd say the best approach is to trust Xcode. If it isn't asking you to typecast sender, that's probably because Apple doesn't think it's important to do so.

Personally, I wouldn't typecast sender unless I had a very specific reason why I wouldn't want that method to be called by something else.