Make container widget fill parent vertically

Question

TL;DR Need the container to fill the vertical space so that it can act as a ontap listener. Have tried most solutions but nothing seems to work.

So what I am trying

Answer 1

If you want a Container to fill all available space, you can simply use:

  width: double.infinity,
  height: double.infinity

Explanation:

While this might seem like a "hack", it's actually what the Flutter team uses as well. See, the most "proper" way is probably to use:

  constraints: BoxConstraints.expand(),

But if you open up the source code of expand(), you will see:

  /// Creates box constraints that expand to fill another box constraints.
  ///
  /// If width or height is given, the constraints will require exactly the
  /// given value in the given dimension.
  const BoxConstraints.expand({
    double width,
    double height,
  }) : minWidth = width ?? double.infinity,
       maxWidth = width ?? double.infinity,
       minHeight = height ?? double.infinity,
       maxHeight = height ?? double.infinity;

So if you are absolutely certain you want to fill all spaces, you can intuitively pass in a number bigger than the screen size, like double.infinity.