iphone – 如何在iOS中更改ePub Book的字体颜色和字体样式？

这就是我写的：

NSString *varMySheet = @"var mySheet = document.styleSheets[0];";

NSString *addCSSRule =  @"function addCSSRule(SELEctor,newRulE) {"
"if (mySheet.addRulE) {"
"mySheet.addRule(SELEctor,newRulE);"                               // For Internet Explorer
"} else {"
"ruleIndex = mySheet.cssRules.length;"
"mySheet.insertRule(SELEctor + '{' + newRule + ';}',ruleIndeX);"   // For Firefox,Chrome,etc.
"}"
"}";

NSString *insertRule1 = [NSString StringWithFormat:@"addCSSRule('html','padding: 0px; height: %fpx; -webkit-column-gap: 0px; -webkit-column-width: %fpx;')",webView.frame.size.height,webView.frame.size.width];
NSString *insertRule2 = [NSString StringWithFormat:@"addCSSRule('p','text-align: justify;')"];
NSString *setTextSizeRule = [NSString StringWithFormat:@"addCSSRule('body','-webkit-text-size-adjust: %d%%;')",currentTextSize];
NSString *setHighLightcolorRule = [NSString StringWithFormat:@"addCSSRule('highlight','BACkground-color: yellow;')"];

    // this is what change the text style 

NSString *insertRule3 = [NSString StringWithFormat:@"addCSSRule('html,body,div,p,span,a','font-family: arial;')"];
NSString *changeColor = [NSString StringWithFormat:@"addCSSRule('html,'color: #1122Cc;')"];

[webView StringByEvaluaTingJavaScriptFromString:varMySheet];

[webView StringByEvaluaTingJavaScriptFromString:addCSSRule];

[webView StringByEvaluaTingJavaScriptFromString:insertRule1];

[webView StringByEvaluaTingJavaScriptFromString:insertRule2];

[webView StringByEvaluaTingJavaScriptFromString:setTextSizeRule];

[webView StringByEvaluaTingJavaScriptFromString:setHighLightcolorRule];
    [webView StringByEvaluaTingJavaScriptFromString:insertRule3];
    [webView StringByEvaluaTingJavaScriptFromString:changeColor];