TextField inside of Row causes layout exception: Unable to calculate size

Question

I’m getting a rendering exception that I don’t understand how to fix. I’m attempting to create a column that has 3 rows.

Row [Image]

Row [TextField ]

<

Answer 1

As @Asif Shiraz mentioned I had same issue and solved this by Wrapping Column in a Flexible, here like this,,

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
        title: 'Flutter Demo',
        theme: new ThemeData(
          primarySwatch: Colors.blue,
        ),
        home: new Scaffold(
          body: Row(
            children: <Widget>[
              Flexible(
                  child: Column(
                children: <Widget>[
                  Container(
                    child: TextField(),
                  )
                  //container
                ],
              ))
            ],
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
          ),
        ));
  }
}

Answer 2

(I assume you're using a Row because you want to put other widgets beside the TextField in the future.)

The Row widget wants to determine the intrinsic size of its non-flexible children so it knows how much space that it has left for the flexible ones. However, TextField doesn't have an intrinsic width; it only knows how to size itself to the full width of its parent container. Try wrapping it in a Flexible or Expanded to tell the Row that you're expecting the TextField to take up the remaining space:

      new Row(
        children: <Widget>[
          new Flexible(
            child: new TextField(
              decoration: const InputDecoration(helperText: "Enter App ID"),
              style: Theme.of(context).textTheme.body1,
            ),
          ),
        ],
      ),