Flutter

How to use Column Widget

Widget that displays children vertically. To fill the available vertical space, wrap the child widget with Expanded widget. Column does not scroll. If you need a scrolling list, consider using ListView.

Flutter

How to use AppBar Widget

Widget to implement the material design app bar. The app bar consists of a toolbar and possibly other widgets such as TabBar and FlexibleSpaceBar. AppBar class(API reference) Toolbar Implementation example of leading, title, and actions.

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