加载HTML字符串内容时,字体自适应屏幕问题处理,在创建 WKWebView 时,注入相关的js:
WKWebViewConfiguration *wkWebConfig = [[WKWebViewConfiguration alloc] init]; NSString *jSString = @"var meta = document.createElement('meta'); meta.setAttribute('name', 'viewport'); meta.setAttribute('content', 'width=device-width'); document.getElementsByTagName('head')[0].appendChild(meta);"; WKUserScript *script = [[WKUserScript alloc] initWithSource:jSString injectionTime:WKUserScriptInjectionTimeAtDocumentEnd forMainFrameOnly:YES];
对于图片处理,只需要给图片一个最大的宽度,也就是屏幕宽度或相对最大宽度,让图片自适应,超过最大宽度,让图片宽度等于最大宽度,其余的情况不做处理,图片高度自适应
NSString *htmlString = [NSString stringWithFormat:@"<html> n" "<head> n" "<style type="text/css"> n" "body {font-size:15px;}n" "</style> n" "</head> n" "<body>" "<script type='text/javascript'>" "window.onload = function(){n" "var $img = document.getElementsByTagName('img');n" "var maxWidth = %f;n" "for(var k in $img){n" "if($img[k].width> maxWidth){n" " $img[k].style.width = maxWidth;n" "}n" "$img[k].style.height ='auto'n" "}n" "}" "</script>%@" "</body>" "</html>", _maxWidth,string]; [self.webView loadHTMLString:htmlString baseURL:nil];
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