1.使用!important
NSString *strTemplateHTML = [NSString stringWithFormat:@"<html><head><style>img{max-width:320.0;height:auto !important;width:auto !important;};</style></head><body style='margin:0; padding:0;'>%@</body></html>", @"insert your html content here"];
[webView loadHTMLString:strTemplateHTML baseURL:nil];
2.使用 js
htmlText=[jsonObj objectForKey:@"content"];
jsString = [NSString stringWithFormat:@"<html> \n"
"<head> \n"
"<style type=\"text/css\"> \n"
"body {font-size:%fpx; line-height:%fpx;background-color: transparent;}\n"
// "img{max-width:305;height:auto !important;width:auto !important;};"
".img {width:你设定的值;}"//关键是这句给所有网络图片设宽度
"</style> \n"
"</head> \n"
"<body>%@</body> \n"
"</html>", fontSize ,line_height,htmlText];
NSURL *urlBai=[NSURL URLWithString:ImageWeb_Head];
[showWebView loadHTMLString:jsString baseURL: urlBai];
showWebView.delegate=self;
代理内调用
-(void)webViewDidFinishLoad:(UIWebView *)webView{
[webView stringByEvaluatingJavaScriptFromString: @"var script = document.createElement('script');" "script.type = 'text/javascript';" "script.text = \"function ResizeImages() { " "var imgs = document.getElementsByTagName('img');" "for (var i = 0; i < imgs.length; i ++) {" " var img = imgs[i];" " img.style.width = 你设定的值;"" img.style.height = null;" "}" "}\";" "document.getElementsByTagName('head')[0].appendChild(script);"];
[webView stringByEvaluatingJavaScriptFromString:@"ResizeImages();"];
}
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