I have a UITextView where I'm managing an NSAttributedString, initially entered as normal via the keyboard. I save the attributed string as HTML, which looks fine.
When I load it again, and convert it back to an attributed string from the HTML, the font size appears to change.
For example, the HTML on loading looks like this:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta http-equiv="Content-Style-Type" content="text/css">
<title></title>
<meta name="Generator" content="Cocoa HTML Writer">
<style type="text/css">
p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 21.0px Helvetica; color: #000000; -webkit-text- stroke: #000000}
span.s1 {font-family: 'Helvetica'; font-weight: normal; font-style: normal; font-size: 21.00pt; font-kerning: none}
</style>
</head>
<body>
<p class="p1"><span class="s1">There is some text as usual lots of text</span></p>
</body>
</html>
I convert it and check the attributes with the following code:
// convert to attributed string
NSError *err;
NSAttributedString *as = [[NSAttributedString alloc] initWithData:data3
options:@{NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType,
NSCharacterEncodingDocumentAttribute: @(NSUTF8StringEncoding)}
documentAttributes:nil
error:&err] ;
NSMutableAttributedString *res = [as mutableCopy];
[res enumerateAttribute:NSFontAttributeName inRange:NSMakeRange(0, res.length) options:0 usingBlock:^(id value, NSRange range, BOOL *stop) {
if (value) {
UIFont *oldFont = (UIFont *)value;
NSLog(@"On Loading: Font size %f, in range from %d length %d", oldFont.pointSize, range.location, range.length);
}
}];
The output shows that the font size has increased from 21 to 28:
On Loading: Font size 28.000000, in range from 0 length 40
On Loading: Font size 21.000000, in range from 40 length 1
Basically, each time I load the string, the font size increases. I need to store it as HTML rather than as NSData because it will also be used by other platforms.
Does anyone have any ideas why this is happening?
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