FlutterLogo :

• FlutterLogo widget is as simple as it sounds, it is just the flutter logo in the form of an icon. This widget also comes built-in with flutter SDK.

• This widget can found its use as a placeholder for an image or icon.

Constructor of FlutterLogo Class :

const FlutterLogo(
{Key key,
double size,
Color textColor: const Color(0xFF757575),
FlutterLogoStyle style: FlutterLogoStyle.markOnly,
Duration duration: const Duration(milliseconds: 750),
Curve curve: Curves.fastOutSlowIn}
)

Example :

import 'package:flutter/material.dart';

void main() {
  runApp(MaterialApp(
    debugShowCheckedModeBanner: false,
    home: Scaffold(
      appBar: AppBar(
        title: const Row(
          children: [
            Row(
              children: [
                Text('Flutter Logo Widget'),
                FlutterLogo(
                  size: 30,
                )
              ],
            ),
          ],
        ),
      ),
      body: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          Container(
            margin: const EdgeInsets.only(left: 110),
            height: 200,
            width: 200,
            child: const FlutterLogo(
               size: 15,
              style: FlutterLogoStyle.stacked,
              textColor: Colors.black,
              curve: Curves.linear,
            ),
          ),
        ],
      ),
    ),
  ));
}

Output :

Example :

import 'package:flutter/material.dart';

void main() {
  runApp(MaterialApp(
    debugShowCheckedModeBanner: false,
    home: Scaffold(
      appBar: AppBar(
        title: const Row(
          children: [
            Row(
              children: [
                Text('Flutter Logo Widget'),
                FlutterLogo(
                  size: 30,
                )
              ],
            ),
          ],
        ),
      ),
      body: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          Container(
            margin: const EdgeInsets.only(left: 110),
            height: 200,
            width: 200,
            child: const FlutterLogo(
              size: 15,
              style: FlutterLogoStyle.markOnly,
              textColor: Colors.black,
              curve: Curves.linear,
            ),
          ),
        ],
      ),
    ),
  ));
}

Output :

Example :

import 'package:flutter/material.dart';

void main() {
  runApp(MaterialApp(
    debugShowCheckedModeBanner: false,
    home: Scaffold(
      appBar: AppBar(
        title: const Row(
          children: [
            Row(
              children: [
                Text('Flutter Logo Widget'),
                FlutterLogo(
                  size: 30,
                )
              ],
            ),
          ],
        ),
      ),
      body: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          Container(
            margin: const EdgeInsets.only(left: 110),
            height: 200,
            width: 200,
            child: const FlutterLogo(
              size: 15,
              style: FlutterLogoStyle.horizontal,
              textColor: Colors.black,
              curve: Curves.linear,
            ),
          ),
        ],
      ),
    ),
  ));
}

Output :