BoxConstraints maxHeight is always applied when set

Question

I have a container in which I have set the below constraints value

constraints: BoxConstraints(maxHeight: 300),

In the container widget, It has a child whose height is set to 200 but when the app is run the height is set to 300 instead of 200.

How to solve this?

Can you paste complete sample code here with parent container and child container? — Ganapat, Feb 07 '19 at 06:18
This could be because the Container widget tries to big as possible. Please post the complete sample. — Frederik Schweiger, Feb 07 '19 at 11:25

score 0 · Answer 1 · answered Jul 04 '22 at 08:58

Found the answers here : https://stackoverflow.com/a/48676681/12838877

You have to set the minHeight or minWidth, to override the default value. just applied to my code and works as expected.

ConstrainedBox(
  constraints: new BoxConstraints(
    minHeight: 5.0,
    minWidth: 5.0,
    maxHeight: 30.0,
    maxWidth: 30.0,
  ),
  child: new DecoratedBox(
    decoration: new BoxDecoration(color: Colors.red),
  ),
)

BoxConstraints maxHeight is always applied when set

1 Answers1