Flutter AppAuth:在应用程序中启动url时，有没有办法隐藏url地址和底部导航栏？

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Flutter AppAuth'),
        ),
        body: WebView(
          initialUrl: 'https://example.com',
          javascriptMode: JavascriptMode.unrestricted,
          navigationDelegate: (NavigationRequest request) {
            // 禁止加载其他URL地址
            if (request.url != 'https://example.com') {
              return NavigationDecision.prevent;
            }
            return NavigationDecision.navigate;
          },
        ),
        bottomNavigationBar: null, // 隐藏底部导航栏
      ),
    );
  }
}

void main() {
  runApp(MyApp());
}