CODEWITHSUNDEEP
flutterwarnings
Leonardo Contreras
Leonardo Contreras

Reputation: 9

Warning on Text Widget in my main.dart file

import 'package:flutter/material.dart';

void main() { runApp( const MaterialApp(

  home: Scaffold(
    backgroundColor: Colors.yellowAccent,
    appBar: AppBar(
        title: Text('I am Rich'),
    ),
  ),
)

); }

I'm starting to study a new course on Flutter and get a warning saying "The constructor being called is not a constructor" Can somebody tell me why is that? It only appears when I add the Text Widget... What's wrong here? thank you in advance. I'm a total beginner

Upvotes: 1

Views: 144

Answers (3)

Suraj Kumar
Suraj Kumar

Reputation: 37

import 'package:flutter/material.dart';
    
void main() { 
   runApp( 
    MaterialApp(
       home: Scaffold(
        backgroundColor: Colors.yellowAccent,
        appBar: AppBar(
            title: const Text('I am Rich'),
        ),
      ),
    )
    
    ); 
}

In your code const is creating problem here i have solve the error

If you dont use const it will work fine but it will show warning if you dont want any warning then use const before text widget

Upvotes: 1

Modi Vidhi
Modi Vidhi

Reputation: 21

home: Scaffold(
    backgroundColor: Colors.yellowAccent,
    appBar: AppBar(
      title: const Text('I am Rich'),
    ),
  ),

You should add const keyword before your Text Widget. Because you have added static text in Text Widget.

Upvotes: 1

Zhentao
Zhentao

Reputation: 801

void main() {
  runApp(
    MaterialApp(
      home: Scaffold(
        backgroundColor: Colors.yellowAccent,
        appBar: AppBar(
          title: Text('I am Rich'),
        ),
      ),
    )
  );
}

you should remove the const keyword in front of the MaterialApp, because AppBar() is not a const constructor

Upvotes: 1

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