What is stack in Flutter?

Overlays let independent child widgets float visual elements on top of other widgets by inserting them into the overlay’s Stack . This article discusses the implementation of Overlays in Flutter.

SizedBox is a built-in widget in flutter SDK . It is a simple box with a specified size. It can be used to set size constraints to the child widget, put an empty SizedBox between the two widgets to get some space in between, or something else. It is somewhat similar to a Container widget with fewer properties.

Flexible is a built-in widget in flutter which controls how a child of base flex widgets that are Row, Column, and Flex will fill the space available to it . The Expanded widget in flutter is shorthand of Flexible with the default fit of FlexFit. tight.

Stack widget is a built-in widget in flutter SDK which allows us to make a layer of widgets by putting them on top of each other .21 Şub 2022