Text in iPhone App get aliased in 2x Mode in ipad

I have an App for iPhone using high resolution images to make it work for both iPhone and iPad. But all the text get 开发者_如何学Pythonaliased in 2x mode in iPad.

Is that possible to let the App change the font size automatically in 2x Mode?

OR I have to detect device type and handle font size manually?

Thanks in advance,

You cannot do anything about the font aliasing in the iPad 2x mode, nor can you know when the user enters the 2x mode. It's nice that it uses the larger sized images, but consider that a bonus.