I have formatted text delivered to the app as HTML that I am converting to a
NSAttributedString and then assigning to a UILabel like this:
NSDictionary* options =
@{
NSCharacterEncodingDocumentAttribute: @(NSUTF8StringEncoding),
NSDefaultAttributesDocumentAttribute:
@{
NSFontAttributeName: label.font,
NSForegroundColorAttributeName: label.textColor,
NSStrikethroughStyleAttributeName: @1,
NSUnderlineStyleAttributeName:
@(NSUnderlineStyleSingle)
},
NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType
};
attributedString = [[NSAttributedString alloc] initWithData:data
options:options documentAttributes:NULL error:&error];
label.attributedText = attributedString;
The UILabel has its font set to Avenir Next Medium, which the code above uses
as the base font for the attributed string. The HTML is of the form:
<p>Blah blah blah <em>blah blah blah</em> blah blah blah</p>
What I'm seeing visually is that the normal paragraph text is fine but that the
text inside the <em> tag is nearly unreadable. I added code to dump out the
attribute runs and found that the starting paragraph text is what's expected:
NSFont = "<UICTFont: 0x14c51680> font-family: \"AvenirNext-Medium\";
font-weight: normal; font-style: normal; font-size: 16.00pt";
but that the text inside the <em> tag uses Avenir Next UltraLight Italic:
NSFont = "<UICTFont: 0x14c51ee0> font-family: \"AvenirNext-UltraLightItalic\";
font-weight: normal; font-style: italic; font-size: 16.00pt";
This seems odd to me since there's a perfectly fine Avenir Next Medium Italic
available. Is this an expected font choice for italic text given the setup
above and, more importantly, is there a way for me to end up with an attributed
string that's using the italic version of the base font short of manually
walking each of the attribute runs and "correcting" the font?
Thanks,
Steve
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