//image宽和高 好用 NSString *strTemplateHTML = [NSString stringWithFormat:@"<html><head><style>img{max-320.0;height:auto !important;auto !important;};</style></head><body style='margin:0; padding:0;'>%@</body></html>", @"insert your html content here"]; [webView loadHTMLString:strTemplateHTML baseURL:nil];
//代理执行时调用
网上给的下边的这个方法好像不太好用 我用了 没啥效果
- (void)webViewDidFinishLoad:(UIWebView *)webView1 { //修改服务器页面的meta的值 就是文本的宽高 定义成 系统手机宽高 NSString *meta = [NSString stringWithFormat:@"document.getElementsByName("viewport")[0].content = "width=%f, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no"", webView.frame.size.width]; [webView1 stringByEvaluatingJavaScriptFromString:meta]; }
我自己写了一个js ，有点麻烦 但是对图片管理的效果很明显
如下代码：
htmlText=[jsonObj objectForKey:@"content"]; jsString = [NSString stringWithFormat:@"<html> " "<head> " "<style type="text/css"> " "body {font-size:%fpx; line-height:%fpx;background-color: transparent;} " // "img{max-305;height:auto !important;auto !important;};" ".img {305.0;}"//关键是这句给所有网络图片设宽度 "</style> " "</head> " "<body>%@</body> " "</html>", fontSize ,line_height,htmlText]; NSURL *urlBai=[NSURL URLWithString:ImageWeb_Head]; [showWebView loadHTMLString:jsString baseURL: urlBai]; showWebView.delegate=self; -(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 = 305 ;"//图片宽度我设置为305 " img.style.height = null;" "}" "}";" "document.getElementsByTagName('head')[0].appendChild(script);"]; [webView stringByEvaluatingJavaScriptFromString:@"ResizeImages();"]; }