Column(
  mainAxisAlignment: MainAxisAlignment.spaceEvenly,
  children: [
    Image.asset('images/pic1.jpg'),
    Image.asset('images/pic2.jpg'),
    Image.asset('images/pic3.jpg'),
  ],
);

App source: row_column

Sizing widgets

When a layout is too large to fit a device, a yellow
and black striped pattern appears along the affected edge.
Here is an example of a row that is too wide:

Widgets can be sized to fit within a row or column by using the
Expanded widget. To fix the previous example where the
row of images is too wide for its render box,
wrap each image with an Expanded widget.

Expanded(
      child: Image.asset('images/pic1.jpg'),
    ),

Expanded(
      child: Image.asset('images/pic2.jpg'),
    ),