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如何调整wkwebview字体大小?

[英]how to resize the wkwebview font size?

How to change the font size of WKWebView irrespective of the webkit content in iOS programming? 无论iOS编程中的Webkit内容如何,​​如何更改WKWebView的字体大小?

I am using [Webview stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"resizeText(%lu)",(unsigned long)fontSize]]; 我正在使用[Webview stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"resizeText(%lu)",(unsigned long)fontSize]];

But it doesn't make any changes to the web view font size. 但它不会对Web视图的字体大小进行任何更改。

I suggest you add CSS code to the content. 我建议您将CSS代码添加到内容中。

I had to do this one time, and here's an example from my code: 我不得不做一次,这是我的代码中的一个示例:

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 . 现在,您可以在webview使用content变量。

The fontCSS method is as follows, it's in an NSString category: fontCSS方法如下所示,它位于NSString类别中:

-(NSString *)fontCSS
{
    NSRange range = [self rangeOfString:@"font-family"];

    return [self substringFromIndex:range.location];
} 

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