How to make the children in the stack equal in height in flutter?

Issue

How to make the children in the stack equal in height in flutter? The container below is the automatic height, I need to set the height of the upper container according to the height of the lower container.

Why do I need this？

Because I want to implement a background progress bar.

return Stack(
  children: [,
    Container(
      //how to auto set this widget equal height to below.
      height:?
    ),
    Container(
      child: Column(
        children: [
          Text("a"),
          Text("b"),
          Text("c"),
          //maybe more widgets..
        ],
      ),
    ),
  ],
);

Solution

I found the solution based on @JaisonThomas' comment.

return Stack(
  children: [
    Positioned.fill(
      child: LayoutBuilder(builder: (BuildContext context, BoxConstraints constraints) {                       
        return Container(
          child: Row(
            children: [
              Container(
                width: constraints.maxWidth * _progress,
                color: statusColor,
              ),
            ],
          ),
        );
      }),
    ),
    Container(
      child: Column(
        children: [
          Text("a"),
          Text("b"),
          Text("c"),
          //maybe more widgets..
        ],
      ),
    ),
  ],
);

Answered By - noveleven