Anatomy of Hello Flutter app

Our first version of the app consists of a parent screen and text in the middle of the screen. In Flutter, everything is a widget. That means the screen on which text is rendered is a widget, and the text itself is widget as well.

Our first version of the app consists of a parent screen and text in the middle of the screen.

Please note the app’s widget mapping with the widget tree visual:

• MaterialApp widget is what you see as a black screen.

• The text “Hello Flutter !” is centered using the Center widget and the Text widget holds the actual text string.