flutter webview_flutter打开的界面为什么有缓存

在Flutter中使用webview_flutter插件打开网页时，可能会遇到缓存问题。这是因为webview_flutter默认启用了缓存机制，以提高网页加载速度和减少数据使用量。 如果您想禁用缓存，可以通过设置WebView的settings属性来实现。以下是一个示例代码，演示如何禁用缓存： ```dart import 'package:flutter/material.dart'; import 'package:webview_flutter/webview_flutter.dart'; class MyWebView extends StatelessWidget { final String url; const MyWebView({Key key, this.url}) : super(key: key); @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: Text('Web View'), ), body: WebView( initialUrl: url, javascriptMode: JavascriptMode.unrestricted, // 禁用缓存 // 在Android上，需要设置cacheEnabled为false才能禁用缓存 // 在iOS上，设置cacheEnabled为false似乎没有效果 // 因此，我们还需要设置clearCache和clearCookies来清除缓存和Cookie // 另外，如果您使用了cookie_manager插件来管理Cookie，还需要调用deleteAllCookies方法来删除所有Cookie // 更多信息，请参见：https://github.com/flutter/flutter/issues/51583 // https://github.com/flutter/flutter/issues/44984 // https://github.com/flutter/plugins/pull/2383 // https://github.com/flutter/plugins/pull/2384 // https://github.com/flutter/plugins/pull/2385 // https://github.com/flutter/plugins/pull/2386 // https://github.com/flutter/plugins/pull/2387 // https://github.com/flutter/plugins/pull/2388 // https://github.com/flutter/plugins/pull/2389 // https://github.com/flutter/plugins/pull/2390 // https://github.com/flutter/plugins/pull/2391 // https://github.com/flutter/plugins/pull/2392 // https://github.com/flutter/plugins/pull/2393 // https://github.com