Flutter: Setting the height of the AppBar

Question

How can I simply set the height of the AppBar in Flutter?

The title of the bar should be staying centered vertically (in that AppBar).

Answer 1

If you are in Visual Code, Ctrl + Click on AppBar function.

Widget demoPage() {
  AppBar appBar = AppBar(
    title: Text('Demo'),
  );
  return Scaffold(
    appBar: appBar,
    body: /*
    page body
    */,
  );
}

And edit this piece.

app_bar.dart will open and you can find 
    preferredSize = new Size.fromHeight(kToolbarHeight + (bottom?.preferredSize?.height ?? 0.0)),

Difference of height!