> For the complete documentation index, see [llms.txt](https://docs.coda.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.coda.co/https-coda-payments.gitbook.io-zhong-wen-coda-private-technical-documentation/codapay/webview-zhu-yi-shi-xiang/ios-webview-aboutblank-wen-ti.md).

# iOS WebView (about:blank) 问题

在 iOS WebView 中处理 `about:blank` 页面时，您可以通过实现 `WKUIDelegate` 委托，并将其设置为 `_webview.uiDelegate` 来解决此问题。然后，您需要实现以下方法：

```objective-c
(WKWebView *)webView:(WKWebView *)webView createWebViewWithConfiguration:(WKWebViewConfiguration *)configuration forNavigationAction:(WKNavigationAction *)navigationAction windowFeatures:(WKWindowFeatures *)windowFeatures {
    if (!navigationAction.targetFrame.isMainFrame) {
        [webView loadRequest:navigationAction.request];
    }

    return nil;
}
```

{% hint style="success" %} <mark style="color:green;">**解决方案说明**</mark>

* **实现 `WKUIDelegate`**: `WKUIDelegate` 协议用于处理与 WebView UI 相关的任务。
* **处理新的窗口请求**: 如果请求的目标框架不是主框架（即 `navigationAction.targetFrame.isMainFrame` 为 `NO`），则通过 `loadRequest` 方法将该请求加载到 WebView 中。这可以防止新窗口打开，解决 `about:blank` 的问题。
  {% endhint %}


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