how to resize the wkwebview font size?
Question
How to change the font size of WKWebView irrespective of the webkit content in iOS programming?
I am using [Webview stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"resizeText(%lu)",(unsigned long)fontSize]];
But it doesn't make any changes to the web view font size.
1 answers
solution1
0 2017-10-26 10:19:41
I suggest you add CSS code to the content.
I had to do this one time, and here's an example from my code:
NSString *systemFont = [[[UIFont systemFontOfSize:11.f] description] fontCSS];
NSString *boldFont = [[[UIFont boldSystemFontOfSize:12.f] description] fontCSS];
// The above fonts can be changed to your liking.
NSString *oldContent = ___; // This is the html content that was loaded.
NSString *content = [NSString stringWithFormat:@"<html><head>\
<style>\
img,iframe{max-width:100%%; width:auto; height:auto; display:block; margin-left:auto; margin-right:auto; margin-bottom:20px}\
body{%@; margin-left:24px; margin-right:24px; margin-bottom:24px}\
strong{%@}\
</style>\
</head><body>%@</body></html>", systemFont, boldFont, oldContent];
Now you use the content variable with your webview .
The fontCSS method is as follows, it's in an NSString category:
-(NSString *)fontCSS
{
NSRange range = [self rangeOfString:@"font-family"];
return [self substringFromIndex:range.location];
}
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