How to get AppBar height in Flutter?

Issue

How can I get the height of an AppBar in Flutter?
I am using the MarialApp Widget (‘package:flutter/material.dart’).

I have the height of my Context and would like to deduct the height of the appbar.

final double height = MediaQuery.of(context).size.height;

Solution

This is not an ideal way, I think, but it will work.

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;

You can use this height to reduce from the screen height.

final double height = MediaQuery.of(context).size.height;

Answered By – ap14

This Answer collected from stackoverflow, is licensed under cc by-sa 2.5 , cc by-sa 3.0 and cc by-sa 4.0

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