ios 如何在不加载空页面的情况下清理 UIWebView 的内容？
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How to clean the content of UIWebView without loading an empty page?
提问by hzxu
I need to clean the content of UIWebView(in order to reuse it), but I have some authentication handling code in its delegate methods, so I do not want to load an empty page like about:blank to clean it, as it will trigger my authentication handling code. So is there a way for doing this? (also, by reusing it, I need to put a spinner on top of the web view, and when it loads another page, I don't want the user see the previous loaded page content, so that's why I need to clean it)
我需要清理 UIWebView 的内容（为了重用它），但我在它的委托方法中有一些身份验证处理代码，所以我不想加载像 about:blank 这样的空页面来清理它，因为它会触发我的身份验证处理代码。那么有没有办法做到这一点？（另外，通过重用它，我需要在 web 视图顶部放置一个微调器，当它加载另一个页面时，我不希望用户看到以前加载的页面内容，所以这就是我需要清理它的原因）
Thanks!
谢谢！
回答by Nilesh Kikani
回答by myeyesareblind
this did the trick for me:
这对我有用：
[webView stringByEvaluatingJavaScriptFromString:@"document.open();document.close()"];
回答by Prasad
Try this out. This worked for me
试试这个。这对我有用
[self.webView stringByEvaluatingJavaScriptFromString:@"document.body.innerHTML = \"\";"];
回答by turingtested
If your only problem is that the spinner disappears when you load a blank page, you can use this code in webViewDidFinishLoad:
如果您唯一的问题是加载空白页面时微调器消失，您可以在 webViewDidFinishLoad 中使用以下代码：
– (void)webViewDidFinishLoad:(UIWebView *)currentWebView {
if (![currentWebView.request.URL.description isEqualToString: @"about:blank"]) {
self.mySpinner.hidden = YES;
}
}
...then the spinner will go on until your webview is actually done loading.
...然后微调器将继续运行，直到您的 webview 实际加载完毕。
