How to Stretch Columns to Full Screen Height In Flutter ?

• General

A Column Widget is a widget where the elements or children are arranged vertically like a column. So, in this article, we will go through how to Stretch columns to Full-Screen Height in a flutter.

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How to Stretch Columns to Full-Screen Height In Flutter?

Each Container Widget contains a column allowing you to add multiple widgets.

return Scaffold(
  backgroundColor: Color(0xFF222222),
    body: SafeArea(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        crossAxisAlignment: CrossAxisAlignment.stretch,
        children: <Widget>[
          Expanded(
            child: Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            crossAxisAlignment: CrossAxisAlignment.stretch,
              children: <Widget>[
                Expanded(
                  child: Container(
                    color: Colors.red,
                    child: Column(
                    mainAxisAlignment: MainAxisAlignment.start,
                    children: <Widget>[
                    Text('Left', textAlign: TextAlign.center),
                    Text('Left', textAlign: TextAlign.center),
                    Text('Left', textAlign: TextAlign.center),
                    ],
                  ),
                ),
              ),
              Expanded(
                child: Container(
                  color: Colors.green,
                  child: Column(
                  mainAxisAlignment: MainAxisAlignment.end,
                  children: <Widget>[
                  Text('Right', textAlign: TextAlign.center),
                  Text('Right', textAlign: TextAlign.center),
                  Text('Right', textAlign: TextAlign.center),
                  ],
                 ),
                ),
               ),
              ],
             ),
            ),
            Expanded(
            child: Container(
              color: Colors.blue,
              child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: <Widget>[
                Text('Bottom', textAlign: TextAlign.center),
                Text('Bottom', textAlign: TextAlign.center),
                Text('Bottom', textAlign: TextAlign.center),
               ],
             ),
           ),
         ),
       ],
     ),
   ),
 );

So, we will get output like the below:

Here’s the way to distribute your containers evenly both horizontally and vertically. Also, the code snippet will look like the below:

return Scaffold(
  backgroundColor: Color(0xFF222222),
  body: Column(
    mainAxisAlignment: MainAxisAlignment.spaceBetween,
    crossAxisAlignment: CrossAxisAlignment.stretch,
    children: <Widget>[
      Expanded(
        child: Row(
          mainAxisAlignment: MainAxisAlignment.spaceBetween,
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: <Widget>[
            Expanded(
              child: Container(
              color: Colors.red,
              child: Text('Left', textAlign: TextAlign.center),
             ),
           ),
           Expanded(
             child: Container(
             color: Colors.green,
             child: Text('Right', textAlign: TextAlign.center),
             ),
            ),
          ],
        ),
      ),
      Expanded(
        child: Container(
        color: Colors.blue,
        child: Text('Bottom', textAlign: TextAlign.center),
       ),
      ),
    ],
  ),
);

So, we will get a result like the below:

Final Edit version 4:

return Scaffold(
backgroundColor: Color(0xFF222222),
body: Column(
  mainAxisAlignment: MainAxisAlignment.spaceBetween,
  children: <Widget>[
  SizedBox(height: 20),
    Expanded(
    child: Row(
    mainAxisSize: MainAxisSize.max,
    crossAxisAlignment: CrossAxisAlignment.stretch,
      children: <Widget>[
      Expanded(
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.stretch,
            children: <Widget>[
            Expanded(
              child: Container(
              color: Colors.red,
              child: Text('Left', textAlign: TextAlign.center),
             ),
            ),
           ],
          ),
         ),
         Expanded(
         child: Column(
         crossAxisAlignment: CrossAxisAlignment.stretch,
           children: <Widget>[
           Expanded(
             child: Container(
             color: Colors.red,
             child: Text('Right', textAlign: TextAlign.center),
              ),
             ),
            ],
           ),
          ),
         ],
        ),
      ),
      Expanded(
        child: Column(
        mainAxisSize: MainAxisSize.max,
        crossAxisAlignment: CrossAxisAlignment.stretch,
      children: <Widget>[
          Expanded(
          child: Container(
          color: Colors.green,
          child: Text('Bottom', textAlign: TextAlign.center),
           ),
          ),
         ],
        ),
       ),
      ],
     ),
   );

Also, to get columns to take up the full width of the display and to share the height equally we did the following:

return MaterialApp(
  home: Scaffold(
    backgroundColor: Colors.black,
    body: SafeArea(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: <Widget>[
          Expanded(
            child: SizedBox(
              width: double.infinity,
              child: FlatButton(
                onPressed: () {
                  playSound(1);
                },
                color: Colors.blue,
              ),
            ),
          ),

Expanded Widget will share the height while the SizedBox Widget will take up the whole width with width is set to double.infinity.

Conclusion:

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Written by Abhishek Dhanani

Abhishek Dhanani, a skilled software developer with 3+ years of experience, masters Dart, JavaScript, TypeScript, and frameworks like Flutter and NodeJS. Proficient in MySQL, Firebase, and cloud platforms AWS and GCP, he delivers innovative digital solutions.