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I got stuck with a problem in Flutter: The following assertion was thrown building TextField, it flesh me a stranger pro


I got stuck with a problem in Flutter: The following assertion was thrown building TextField, it flesh me a stranger pro

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I got stuck with a problem in Flutter: The following assertion was thrown building TextField, it flesh me a stranger pro
Tag : android , By : littlefuzz
Date : November 28 2020, 04:01 AM

like below fixes the issue I got stuck with a problem in Flutter: The following assertion was thrown building TextField, it flesh me a strange problem just for a brief moment! , The exception explains what happens:
Material(
  child: TextField(...),
)

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Flutter stuck on Building Dart code after doing flutter build ios


Tag : ios , By : paolodm
Date : March 29 2020, 07:55 AM
it helps some times That's an issue that was fixed very recently and the fix should already be available in the master channel.
flutter channel master
flutter doctor

Flutter: I got stuck with a problem in Flutter. I think the problem is the card that does not adapt dynamically


Tag : java , By : Mark
Date : March 29 2020, 07:55 AM
wish helps you The build function for Assegno should have a Flexible or an Expanded widget in it like this:
@override
Widget build(BuildContext context) {
  return Column(
    children: <Widget>[
      Flexible(child: Card(child: _buildAssegnoList(context)))
    ],
  );
}

How to Fix the error "The following assertion was thrown building FutureBuilder<List<Event>>(dirty, sta


Tag : dart , By : Marcos de Carvalho
Date : March 29 2020, 07:55 AM
I hope this helps you . The problem is that when your FutureBuilder returns with no data (when the FutureBuilder is first loaded) you do not return a widget.
Try changing your FutureBuilder like so:
FutureBuilder(
  future: fetchPosts(new http.Client()),
  builder: (BuildContext context, AsyncSnapshot<List<Event>> snapshot) {
    if (snapshot.hasData) {
      return ListViewPosts(events: snapshot.data);
    }

    return CircularProgressIndicator();
  },
)

The following assertion was thrown building Navigator


Tag : flutter , By : LucaN
Date : March 29 2020, 07:55 AM
Does that help Can I navigate to another widget when the first one is being built?
 import 'package:flutter/material.dart';
 main()=>runApp(MyApp());

 class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'MyApp',
      initialRoute: '/',
      routes: {
        '/': (context) => Screen0(),
        '/home': (context) => MyHomePage(),
      },
    );
  }
}

 class Screen0 extends StatefulWidget {
  @override
  _Screen0State createState() => _Screen0State();
}

class _Screen0State extends State<Screen0> {
  @override
  void initState() {
    changeScreen();
    super.initState();
  }

  void changeScreen() {
      // The delay fixes it
    Future.delayed(Duration(milliseconds: 5000)).then((_) {
      Navigator.pushReplacementNamed(context, '/home');
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
    body: Center(
      child: Text('First Screen'),
    ),
    );
  }
}


class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(''),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.display1,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: Icon(Icons.add),
      ),
    );
  }
}

EXCEPTION CAUGHT BY WIDGETS LIBRARY flutter: The following assertion was thrown building PhotosList(dirty, state: _Photo


Tag : flutter , By : Rit Li
Date : March 29 2020, 07:55 AM
I hope this helps you . No.of DataColumn (headings) and No.of DataCell in each row should be same.
In your code, you missing a column heading "State Latest Price" (2nd Column heading)
Widget bodyData() =>
      DataTable(
          sortColumnIndex: 1,
          sortAscending: true,
          columns: <DataColumn>[
            DataColumn(
              label: Text("Company Name"),
              onSort: (_, __) {
                setState(() {
                  widget.photos.sort((a, b) =>
                      a.data["quote"]["companyName"]
                          .compareTo(b.data["quote"]["companyName"]));
                });
              },
            ),
            DataColumn(
              label: Text("Stats Latest Price"),
              onSort: (_, __) {
                setState(() {
                  widget.photos.sort((a, b) =>
                      a.data["stats"]["latestPrice"]
                          .compareTo(b.data["stats"]["latestPrice"]));
                });
              },
            ),
            DataColumn(
              label: Text("Dividend Yield TT"),
              onSort: (_, __) {
                setState(() {
                  widget.photos.sort((a, b) =>
                      a.data["stats"]["dividendYield"]
                          .compareTo(b.data["stats"]["dividendYield"]));
                });
              },
            ),
            DataColumn(
              label: Text("IEX Bid Price"),
              onSort: (_, __) {
                setState(() {
                  widget.photos.sort((a, b) =>
                      a.data["quote"]["iexBidPrice"]
                          .compareTo(b.data["quote"]["iexBidPrice"]));
                });
              },
            ),
            DataColumn(
              label: Text("Latest Price"),
              onSort: (_, __) {
                setState(() {
                  widget.photos.sort((a, b) =>
                      a.data["quote"]["latestPrice"]
                          .compareTo(b.data["quote"]["latestPrice"]));
                });
              },
            ),
          ],
          rows: widget.photos
              .map(
                (photo) =>
                DataRow(
                  cells: [
                    DataCell(
                      Text('${photo.data["quote"]["companyName"] ?? ""}'),
                    ),
                    DataCell(
                      Text("Last Price:"
                          '${photo.data["stats"]["latestPrice"] ?? ""}'),
                    ),
                    DataCell(
                      Text("Dividend Yield22:"
                          '${photo.data["stats"]["dividendYield"] ?? ""}'),
                    ),
                    DataCell(
                      Text("Last Price:"
                          '${photo.data["quote"]["iexBidPrice"] ?? ""}'),
                    ),
                    DataCell(
                      Text("Last Price:"
                          '${photo.data["quote"]["latestPrice"] ?? ""}'),
                    ),
                  ],
                ),
          )
              .toList());
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