> 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/err_unknown_url_scheme.md).

# ERR\_UNKNOWN\_URL\_SCHEME

## WebView加载网页出错：ERR\_UNKNOWN\_URL\_SCHEME

以下的内容摘自CSDN博客，原文[链接](https://blog.csdn.net/CSDN472651883/article/details/78951642)

{% hint style="danger" %} <mark style="color:red;">**原因**</mark>

WebView 只识别标准的 URL 协议，如 http 和 https。对于自定义协议（如 weixin:// 和 qunaraphone://），WebView 无法识别，导致出现错误 `ERR_UNKNOWN_URL_SCHEME`。该错误表明 WebView 无法处理支付渠道提供的自定义协议。
{% endhint %}

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

为处理自定义 URL 协议，您需要重写 `WebViewClient` 中的 `shouldOverrideUrlLoading` 方法。该方法允许您拦截并管理 WebView 中的 URL 加载行为，确保自定义协议得到正确处理。
{% endhint %}

{% hint style="info" %} <mark style="color:green;">**实现步骤**</mark>

* 在您的 `WebViewClient` 类中实现 `shouldOverrideUrlLoading(WebView view, String url)` 方法。
* 配置该方法以拦截 URL 并处理自定义协议：
  * 返回 `true`：当 URL 使用自定义协议时，表明 WebView 不应处理该 URL，并允许您根据需要处理它。
  * 返回 `false`：对于标准协议（http, https），允许 WebView 按常规加载 URL。
    {% endhint %}

示例实现：

```kotlin
override fun shouldOverrideUrlLoading(view: WebView?, url: String?): Boolean {
    if (url != null && url.startsWith("customscheme://")) {
        // 处理自定义协议
        return true
    }
    return false // 默认行为，处理标准协议
}
```

通过实现此方法，您可以确保自定义 URL 协议根据应用需求正确重定向或处理，从而避免 `ERR_UNKNOWN_URL_SCHEME` 错误。


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