Question 127275 in Android Studio Question posted in
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Android Studio – What does too many positional argument mean in Flutter?

Dart Analysis Toolbar

When I wrote this code in Android Studio, that is what came up in my dart analysis toolbar:
The code I wrote
How do I prevent this?

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3

Answers


  1. 0

    You are missing a ) bracket add it before the semicolon .

    This link explains the about positional and named arguments . And The process you are trying is not a good practice. You need to breakdown the widgets so that it becomes easier to maintain.

    Try as follows:

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        backgroundColor: Colors.blueGrey,
        appBar: AppBar(
          title: const Text('I am rich'),
          backgroundColor: Colors.blueGrey[900],
        ),
        body: Center(
          child: Image.asset('images/diamond.png'),
        ),
      ),
    );
  }
}
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  2. 0

    Add a bracket in the end before semicolon

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  3. 0

    Replace your MaterialApp with this:

    MaterialApp(
      title: 'SaHomeDecor',
      home: Scaffold(
        backgroundColor: Colors.blueGrey,
        appBar: AppBar(
          title: Text('I am rich'),
          backgroundColor: Colors.blueGrey[900],
        ),
        body: Center(
          child: Image.asset('images/diamond.png'),
        ),
      ),
    );

    If you are using AppBar you have to give Scaffold.appBar property like Scaffold(appBar:AppBar()).

    For the image you have to use Scaffold.body property.

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