Align Example

align_example.dart

import 'package:flutter/material.dart';

void main() => runApp(AlignExample());

class AlignExample extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        appBar: AppBar(
          title: Text('Align - Example'),
          centerTitle: true,
        ),
        body: AlignWidgetDemo(),
      ),
    );
  }
}

class AlignWidgetDemo extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container(
      alignment: Alignment.center,
      color: Colors.black,
      child: Stack(
        children: [
          Align(
            alignment: Alignment(-0.75, -0.75),
            child: MyImage(),
          ),
          Align(
            alignment: Alignment(0, 0),
            child: MyImage(),
          ),
          Align(
            alignment: Alignment(0.75, 0.75),
            child: MyImage(),
          ),
        ],
      ),
    );
  }
}

class MyImage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return FlutterLogo(
      size: MediaQuery.of(context).size.height * .25,
    );
  }
}