直接上代碼
NSString *content = [content stringByReplacingOccurrencesOfString:@"&quot" withString:@"'"];
content = [content stringByReplacingOccurrencesOfString:@"<" withString:@"<"];
content = [content stringByReplacingOccurrencesOfString:@">" withString:@">"];
content = [content stringByReplacingOccurrencesOfString:@""" withString:@"\""];
NSString *htmls = [NSString stringWithFormat:@"<html> \n"
"<head> \n"
"<meta name=\"viewport\" content=\"initial-scale=1.0, maximum-scale=1.0, user-scalable=no\" /> \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"
"for(var p in $img){\n"
" $img[p].style.width = '100%%';\n"
"$img[p].style.height ='auto'\n"
"}\n"
"}"
"</script>%@"
"</body>"
"</html>",content];
[_webView loadHTMLString:htmls baseURL:nil];
處理HTMLString的原理：
原理就是用一個for循環，拿到所有的圖片，對每個圖片都處理一次，讓圖片的寬為100%，就是按照屏幕寬度自適應；讓圖片的高atuo，自動適應。文字的字體大小，可以去改font-size:15px，這里我用的是15px。根據自己的具體需求去改吧。
- (NSString *)htmlEntityDecode:(NSString *)string
{
string = [string stringByReplacingOccurrencesOfString:@""" withString:@"\""];
string = [string stringByReplacingOccurrencesOfString:@"'" withString:@"'"];
string = [string stringByReplacingOccurrencesOfString:@"<" withString:@"<"];
string = [string stringByReplacingOccurrencesOfString:@">" withString:@">"];
string = [string stringByReplacingOccurrencesOfString:@"&" withString:@"&"]; // Do this last so that, e.g. @"&lt;" goes to @"<" not @"<"
return string;
}
