Flutter Stack

Row and column are the two essential widgets in Flutter that allows developers to align children horizontally and vertically according to our needs . These widgets are very necessary when we design the application user interface in Flutter.

To create a row or column in Flutter, you add a list of children widgets to a Row or Column widget . In turn, each child can itself be a row or column, and so on. The following example shows how it is possible to nest rows or columns inside of rows or columns. The left column’s widget tree nests rows and columns.

In Flutter, to vertically center a child widget inside a Container, you can wrap the child widget with Column and add mainAxisAlignment: MainAxisAlignment. center to it .