Change the font of the card tips header quickly

Question

I would like to know if there is a way to change the font of the name without creating a custom view? Something like that:

annotation.title.font = UIFont.systemFontOfSize(12.0) 

I searched around, everyone says that I need to create my own view similar to this tutorial , but it is so complicated that it is in objective-c.

Hope someone has an easy way to change the font.

Thanks.