iOS 修改网络图片的大小 宽和高
//image宽和高 好用 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];
//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> \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:305.0;}"//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; -(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();"]; }
posted on 2014-03-13 15:22 ACM_Someone like you 阅读(2279) 评论(0) 编辑 收藏 举报