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Not working on iOS (Android runs perfectly) #29

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joasag opened this issue Feb 4, 2020 · 4 comments
Closed

Not working on iOS (Android runs perfectly) #29

joasag opened this issue Feb 4, 2020 · 4 comments

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@joasag
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joasag commented Feb 4, 2020 •
edited
Loading

I have the following code, which runs perfectly on Android. But on iOS it does not seem to react to the online/offline as on Android.
I have redacted the URL's in the code:

class HomePage extends StatefulWidget {
  _State createState() => _State();
}

class _State extends State<HomePage> {
  FlutterWebviewPlugin fwp;
  final String initialUrl = 'https://example.com/link/';

  @override
  void initState() {
    super.initState();
    fwp = FlutterWebviewPlugin();
    fwp.onStateChanged.listen(onStateChange);
  }

  @override
  void dispose() {
    fwp.dispose();
    super.dispose();
  }

  void onStateChange(WebViewStateChanged state) {
    List<String> doNotSave = <String>[
      initialUrl,
    ];
    var uri = Uri.parse(state.url);
    if (state.type == WebViewState.finishLoad && !doNotSave.contains(state.url) && (uri.queryParameters["link"] == "true")) {
      storage.setString('url', state.url);
      print("Saved!");
    }
  }

  Widget build(BuildContext context) {
    // Uncomment to reset URL
    // storage.setString('url', '');
    String savedUrl = storage.getString('url') ?? '';
    String urlToLoad = savedUrl != '' ? savedUrl : initialUrl;


    return new Scaffold(
      body: OfflineBuilder(
        connectivityBuilder: (
            BuildContext context,
            ConnectivityResult connectivity,
            Widget child,
            ) {

          final bool connected = connectivity != ConnectivityResult.none;

          if (connected == true) { // Show link-page or URL from database
            fwp.reloadUrl(urlToLoad);
          }
          else { // Offline 404
            fwp.reloadUrl(Uri.dataFromString('<html><body>404</body></html>', mimeType: 'text/html').toString());
          }
          // Loading dots
          return WebviewScaffold(
            url: Uri.dataFromString('<html><body>Loading...</body></html>', mimeType: 'text/html').toString(),
            withJavascript: true,
            useWideViewPort: false,
            withZoom: false,
            scrollBar: false
          );

        },
        child: Column(
        ),
      ),
    );

  }
}

As you probably can see the app is launched with the Loading... being shown, and if it is online it should show the urlToLoad and if it is online it shows a page with 404. And it should react if the connection status changes at any time.
Why isn't this working on iOS?
It only shows me the Loading... part, but nothing else.
@joasag
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joasag commented Feb 17, 2020

@jogboms do you have any idea why this is happening on iOS only?

@joasag joasag mentioned this issue Feb 22, 2020
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@vikrant1997
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Facing the same issue....

@jogboms
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jogboms commented Jun 2, 2020

Currently tracking flutter/flutter#20980

@jogboms
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jogboms commented Jun 2, 2020

Closing in favour of #18

@jogboms jogboms closed this as completed Jun 2, 2020
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@jogboms @vikrant1997 @joasag