flickr_verifier.dart

flickr_verifier.dart

import 'package:flutter_webview_plugin/flutter_webview_plugin.dart';

class _MyHomePageState extends State<MyHomePage> {
    FlutterWebviewPlugin _flutterWebviewPlugin;
  
      @override
  void initState() {
    super.initState();
    ...
    _flutterWebviewPlugin = FlutterWebviewPlugin()..onUrlChanged.listen((url) {
      final uri = Uri.parse(url);
      if (uri.host == "localhost" && uri.queryParameters.containsKey("oauth_verifier")) {
        final verifier = uri.queryParameters["oauth_verifier"];
        _flutterWebviewPlugin.close();
        client.requestToken(verifier).then((authClient) {
          _refreshPhotos();
        });
      }
      print(url);
    });
  }
  
    _createLoginUI() {
    return OutlineButton(
      onPressed: () => client.getRequestTokenUrl().then((url){
        //launch(url);
        _flutterWebviewPlugin.launch(url);
      }),
      child: ...
      );
    }
}