/Dart/How to subtract he height of appbar in flutter

How to subtract he height of appbar in flutter

Firstly declare the AppBar widget that you will use in your Scaffold.

Widget demoPage() {
  AppBar appBar = AppBar(
    title: Text('Demo'),
  );
  return Scaffold(
    appBar: appBar,
    body: /*
    page body
    */,
  );
}
Now you can get the height of your appBar using its preferredSized:

double height = appBar.preferredSize.height

Source: stackoverflow.com

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