What is Stack widget in Flutter?

The stack is a widget in Flutter that contains a list of widgets and positions them on top of the other . In other words, the stack allows developers to overlap multiple widgets into a single screen and renders them from bottom to top.

To get mediaQueryData just use following command: MediaQueryData mediaQueryData = MediaQuery. of(context); On the basis of MediaQueryData you can get now device size, orientation, screen height, screen width, blockSize in horizontal, blockSize in vertical as well as safe area in vertical and horizontal both.

Flutter allows you to create apps that self-adapt to the device’s screen size and orientation. There are two basic approaches to creating Flutter apps with responsive design: Use the LayoutBuilder class . From its builder property, you get a BoxConstraints object .