How to make a Flutter container conditional?

August 8, 2023

I have String variable ‘sdesc1’. Now this variable could either have a value or it could be empty. I am using a container to display the above variable.

....
,
Container(
  width: double.infinity,
  color: Colors.transparent,
  child: Padding(
    padding: const EdgeInsets.all(8.0),
    child: Text(sdesc1,
        style:
            TextStyle(fontSize: 10, fontStyle: FontStyle.italic)),
  ),
),
....

In the app screen, the above code generates a blank row occupying some height when the variable ‘sdesc1’ is empty which is not desirable.

I tried to move the piece of code in a widget method and return the container, but it showed me an error saying that return type could be null some thing like that.

How can I make a container conditional when the variables are empty. Please help with some codes. Thanks in advance.

>Solution :

This condition in the build method can prevents from creating a container (I guessed sdesc1 was a string):

if(sdesc1.isNotEmpty)
    Container(
      width: double.infinity,
      color: Colors.transparent,
      child: Padding(
        padding: const EdgeInsets.all(8.0),
        child: Text(sdesc1,
            style:
                TextStyle(fontSize: 10, fontStyle: FontStyle.italic)),
      ),
    ),