TextField inside of Row causes layout exception Unable to calculate size

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

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Hello Guys How are you all ? Hope You all Are fine. In todays tutorial we are going to solve TextField inside of Row causes layout exception: Unable to calculate size error in flutter.

I’m attempting to create a column that has 3 rows. First children is Row [Image] Second Children in Row [TextField] and Third Children is Row [Buttons]. When I run I get the following exception:

I/flutter ( 7674): BoxConstraints forces an infinite width.
I/flutter ( 7674): These invalid constraints were provided to RenderStack's layout() function by the following
I/flutter ( 7674): function, which probably computed the invalid constraints in question:
I/flutter ( 7674):   RenderConstrainedBox.performLayout (package:flutter/src/rendering/proxy_box.dart:256:13)
I/flutter ( 7674): The offending constraints were:
I/flutter ( 7674):   BoxConstraints(w=Infinity, 0.0<=h<=Infinity)

Solution 1

Question: How to solve TextField inside of Row causes layout exception: Unable to calculate size ?
Answer: I got this error because of TextField expands in Horizontal direction and so does the Row, so we need to contain the width of the TextField. So We have to Use Expand. Like Below.

Use Expanded

 Row(
  children: <Widget>[
    Expanded(child: TextField()),
    OtherWidget(),
  ],
)

Solution 2

Use Flexible

Row(
  children: <Widget>[
    Flexible(child: TextField()),
    OtherWidget(),
  ],
)

Solution 3

Wrap it in Container or SizedBox and provide width

Row(
  children: <Widget>[
    SizedBox(width: 100, child: TextField()),
    OtherWidget(),
  ],

Solution 4

use Flexible to use a Textfield inside a row.

         Row(
              children: <Widget>[
                new Text("hi there"),
                new Container(
                  child:new Flexible(
                        child: new TextField( ),
                            ),//flexible
                ),//container


              ],//widget
            ),//row

Solution 5

The solution is to wrap your Text() inside one of the following widgets: Either Expanded or Flexible. So, your code using Expanded will be like:

Expanded(
           child: TextField(
             decoration: InputDecoration(
               hintText: "Demo Text",
               hintStyle: TextStyle(fontWeight: FontWeight.w300, color: Colors.red)
              ),
           ),
        ),

This Above 5 Solution Is Worked For Me. Hope it work for you too.

So it’s all About this error. Hope this tutorial helped you a lot. Comment below Your thoughts and your queries. And Also Comment on your suggestion here.

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Milan Dhameliya is an Information Technology Engineer. By profession, he is a Full Stack developer with knowledge of multiple back-end platforms (e.g., PHP, Node.js, Python) and frontend Flutter frameworks.

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