flutter_tracker/lib/pages/tabs/home_page.dart

import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';

/// Description:
/// Time       : 2021年12月03日 Friday
/// Author     : liuyuqi.gov@msncn
class HomePage extends StatefulWidget {
  String url;

  HomePage({Key? key, required this.url}) : super(key: key);

  @override
  State<HomePage> createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  bool _isLoading = true;

  @override
  Widget build(BuildContext context) {
    var controller = WebViewController()
      ..setJavaScriptMode(JavaScriptMode.unrestricted)
      ..setBackgroundColor(const Color(0x00000000))
      ..setNavigationDelegate(
        NavigationDelegate(
          onProgress: (int progress) {
            // Update loading bar.
          },
          onPageStarted: (String url) {},
          onPageFinished: (String url) {},
          onWebResourceError: (WebResourceError error) {},
          onNavigationRequest: (NavigationRequest request) {
            if (request.url.startsWith('https://www.youtube.com/')) {
              return NavigationDecision.prevent;
            }
            return NavigationDecision.navigate;
          },
        ),
      )
      ..loadRequest(Uri.parse(widget.url));
    return Stack(
      children: <Widget>[
        WebViewWidget(
          controller: controller,
        ),
        _loading()
      ],
    );
  }

  _loading() {
    return _isLoading == true
        ? Container(
            decoration: const BoxDecoration(color: Colors.white),
            child: const Center(
              child: CircularProgressIndicator(),
            ),
          )
        : const Text('');
  }
}