Scaffold is a class in flutter which provides many widgets or we can say APIs like Drawer, SnackBar, BottomNavigationBar, FloatingActionButton, AppBar etc . Scaffold will expand or occupy the whole device screen. It will occupy the available space.
Read moreWhat is MaterialApp and scaffold in flutter?
MaterialApp is a widget that introduces a number of widgets Navigator, Theme that are required to build a material design app. Scaffold Widget is used under MaterialApp, it gives you many basic functionalities, like AppBar, BottomNavigationBar, Drawer, FloatingActionButton, etc.
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