flutter-sport/lib/pages/web/web_page.dart

import 'package:flutter/material.dart';
import 'package:sport/services/app_subscription_state.dart';
import 'package:sport/widgets/appbar.dart';
import 'package:webview_flutter/webview_flutter.dart';

class WebPage extends StatefulWidget {
  final String url;

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

  @override
  State<StatefulWidget> createState() => _PageState();
}

class _PageState extends State<WebPage> with SubscriptionState {
  WebViewController? _controller;
  int _onPageProgress = 0;

  @override
  void initState() {
    super.initState();
  }

  @override
  void dispose() {
    _controller = null;
    super.dispose();
  }

  _js(String call) {
    _controller?.evaluateJavascript("javascript:if(window.SHOES_SDK != undefined && window.SHOES_SDK != null) window.SHOES_SDK.$call");
  }

  @override
  Widget build(BuildContext context) {
    String url = widget.url;
    return Scaffold(
      appBar: buildAppBar(context),
      body: Stack(
        fit: StackFit.expand,
        children: [
          WebView(
            initialUrl: url,
            javascriptMode: JavascriptMode.unrestricted,
            onWebViewCreated: (WebViewController webViewController) {
              _controller = webViewController;
            },
            onProgress: (progress) {
              setState(() {
                _onPageProgress = progress;
              });
            },
            onPageFinished: (r) {},
          ),
          if (_onPageProgress < 100.0)
          Positioned(
              top: 0,
              right: 0,
              left: 0,
              child: SizedBox(
                  height: 5,
                  child: LinearProgressIndicator(
                    value: _onPageProgress / 100.0,
                  ))),
        ],
      ),
    );
  }
}