UIWebView加载HTML标签

遵循UIWebViewDelegate协议，在代理方法里获取内容整体高度，调整 webview的frame

NSString *htmlStr = "


";
UIWebView *webView = [[UIWebView alloc]initWithFrame:CGRectMake(kScaleX * 15, 0, kScaleX * 345, 10)];
webView.delegate = self;
webView.userInteractionEnabled = NO;
[webView loadHTMLString:htmlStr baseURL:nil];
[_myScrollView addSubview:webView];

代理:

- (void)webViewDidFinishLoad:(UIWebView *)webView {
    NSString *contentH = [webView stringByEvaluatingJavaScriptFromString:@"document.body.offsetHeight"];
    webView.frame = CGRectMake(kScaleX * 15, 0, kScaleX * 345, contentH.floatValue);
    
    _myScrollView.contentSize = CGSizeMake(0, CGRectGetMaxY(webView.frame) + 20);
}