uifont - Detect whether a font is bold/italic on iOS?

Question

Given a UIFont or a CTFont, how can I tell whether the font is bold/italic?

Answer 1

iOS7 Font Descriptor

No reason to use Core Text, you can simply ask UIFont for the fontDescriptor.

        UIFont *font = [UIFont boldSystemFontOfSize:17.0f];
        UIFontDescriptor *fontDescriptor = font.fontDescriptor;
        UIFontDescriptorSymbolicTraits fontDescriptorSymbolicTraits = fontDescriptor.symbolicTraits;
        BOOL isBold = (fontDescriptorSymbolicTraits & UIFontDescriptorTraitBold) != 0;

Going forward this is probably the easiest way to ask about the traits of a font.