Flutter : infinite width

Question

I'm doing a flutter course, and here is my relevent code :

Container(
                  color: kBottomContainerColour,
                  margin: EdgeInsets.only(top: 10.0),
                  width: double.infinity,
                  height: kBottomContainerHeight,
                ),

And I keep getting this :

These invalid constraints were provided to _RenderColoredBox's layout() function by the following function, which probably computed the invalid constraints in question:
  RenderConstrainedBox.performLayout (package:flutter/src/rendering/proxy_box.dart:268:14)
The offending constraints were: BoxConstraints(w=Infinity, h=80.0)
The relevant error-causing widget was: 
  Container file:///F:/Works/Projects/flutter/Flutter-Course-Resources/bmi-calculator-flutter1/lib/input_page.dart:241:24

Though it is working fine in the course Please help

Solution

Instead of width: double.infinity,

Use,

width: MediaQuery.of(context).size.width

Comments

[mrgnhnt96]

What is your container within? Is it within a Row, Column, or Stack widget?