Limit max width of Container in Flutter

You can add a constraint to the Container Widget with the preferred maxWidth like this:

Widget build(context) {return Row(  mainAxisSize: MainAxisSize.min,  children: [    Container(      constraints: BoxConstraints(minWidth: 100, maxWidth: 200),      padding: EdgeInsets.all(10),      decoration: BoxDecoration(        color: color ?? Colors.blue,        borderRadius: BorderRadius.circular(10)      ),      child: msg    )  ],  );}

I hope this helps!

Use ConstrainedBox with BoxConstraints maxWidth, wrapped in a Flexible() widget. The Flexible widget allows for the box to resize for smaller screens as well.

Flexible(  child: ConstrainedBox(    constraints: BoxConstraints(maxWidth: 150),    child: Container(      color : Colors.blue,      child: Text('Your Text here'),    ),  ),),

This required to be inside Row or Column Widget

1. Row

  Row(      children: [        Container(            constraints: BoxConstraints(maxWidth: 300),            decoration: BoxDecoration(                borderRadius: BorderRadius.circular(8.0)),            child: Text("Long Text....")        ),      ],    );

2. Column

Column(      crossAxisAlignment: CrossAxisAlignment.start,      children: [        Container(            constraints: BoxConstraints(maxWidth: 300),            decoration: BoxDecoration(                borderRadius: BorderRadius.circular(8.0)),            child: Text("Long Text....")        ),      ],    );

Here in both examples, it's working because Column and Row allow it's children to expand to it's given constraint/size.

Note: If a child wants a different size from its parent and the parent doesn’t have enough information to align it, then the child’s size might be ignored.