How to Join HTML with CSS in NSString in iOS?

Question

I am getting HTML from Server as NSString. I need to apply CSS on that HTML. What I tried

NSString *htmlString = @"This is an example of a lorem ipsum dolor longer question that has about twenty-two words in it, est veniam dolorum?";


NSString *htmlStringQuestion = [NSString stringWithFormat:@"<style type='text/css'>* {padding:0px; margin:0px;} div.ContentWrapper {width:100%; height:100%; text-align:center; display:table;}div.ContentArea {display:table-cell; vertical-align:middle; padding:0 5%; background:#ff0000;color: #FF0; font-size:30; font-family: Baskerville;}</style><div class='ContentWrapper'><div class='ContentArea'><p>%@</p></div></div>", htmlString];

Now its giving warning.

Thanks.

You need to escape all special characters from htmlStringQuestion (special characters being: / % ; etc...) — Bassem
– Bassem, Commented Nov 27, 2015 at 5:15
So, If I remove these characters, It will loss essence of being CSS or HTML. As we are removing Tags — Sam Shaikh
– Sam Shaikh, Commented Nov 27, 2015 at 5:17
Escaping the characters is not removing them. You escape them by adding a `\` before them. Have a look at this: stackoverflow.com/questions/5588495/… and stackoverflow.com/questions/15026942/… — Bassem
– Bassem, Commented Nov 27, 2015 at 5:17
This is local String @Bassem, So I need to apply CSS, if I remove this %, it will not be functional as CSS. — Sam Shaikh
– Sam Shaikh, Commented Nov 27, 2015 at 5:26
@Bassem No, you escape each % by adding a 2nd %. You do not add a backslash. — rmaddy
– rmaddy, Commented Nov 27, 2015 at 5:52

rmaddy · Accepted Answer · 2015-11-27 05:56:19Z

2

You need to properly escape each % literal in the format string by making it %%. If you had any double-quotes in the format string, those would need to be escaped by prepending a backslash like \".

answered Nov 27, 2015 at 5:56

rmaddy

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