How can i add a border to flutter container with child size instead of parent size?-CodePudding

How can i add a border to flutter container with child size instead of parent size?

Current layout

Desired layout

Code

return Scaffold(
  backgroundColor: Color(0XFF136154),
  body: Container(
    decoration: BoxDecoration(
      border: Border.all(color: Colors.white),
      borderRadius: BorderRadius.circular(15),
    ),
    child: Column(
      mainAxisAlignment: MainAxisAlignment.center,
      crossAxisAlignment: CrossAxisAlignment.center,
      children: [
        // Child
        // Login Text
        // Email feild
        // Password feild
        // Login Button
      ],
    ),
  ),
);

CodePudding user response：

The height of the Column is determined by the mainAxisSize property

I think it is missing

Column(
   mainAxisSize: mainAxisSize.min

default is MainAxisSize.max,

Another thing is needed to be done, using Center widget on body

return Scaffold(
    backgroundColor: Color(0XFF136154),
    body: Center(
      child: Container(
        decoration: BoxDecoration(
          border: Border.all(color: Colors.white),
          borderRadius: BorderRadius.circular(15),
        ),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          mainAxisAlignment: MainAxisAlignment.center,
          crossAxisAlignment: CrossAxisAlignment.center, // this is by default
          children: [
            // Child
            // Login Text
            // Email feild
            // Password feild
            // Login Button
          ],
        ),
      ),
    ),
  );
}

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