Alinear widget en Flutter

su

Constructor de la clase Align:

Syntax:
Align({Key key, 
AlignmentGeometry alignment: Alignment.center,
double widthFactor, 
double heightFactor, 
Widget child})

Propiedades del widget Alinear:

• alineación:   Establece la alineación.
• child:   El widget hijo en el árbol.
• hashCode: el código hash del objeto.
• factor de altura :
• la

import 'package:flutter/material.dart';
 
void main() => runApp(MyApp());
 
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'TextSpan',
      theme: ThemeData(
        primarySwatch: Colors.green,
      ),
      home: MyHomePage(),
      debugShowCheckedModeBanner: false,
    );
  }
}
 
class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}
 
class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
            title: Text('GeeksforGeeks Align Widget'),
            backgroundColor: Colors.green),
        body: Center(
            child: Container(
          height: 120.0,
          width: 120.0,
          color: Colors.blue[50],
          child: Align(
            alignment: Alignment.center,
            child: Text(
              "Geeky Text",
              style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
            ),
          ),
        )));
  }
}

Producción:

import 'package:flutter/material.dart';
 
void main() => runApp(MyApp());
 
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'TextSpan',
      theme: ThemeData(
        primarySwatch: Colors.green,
      ),
      home: MyHomePage(),
      debugShowCheckedModeBanner: false,
    );
  }
}
 
class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}
 
class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
            title: Text('GeeksforGeeks Align Widget'),
            backgroundColor: Colors.green),
        body: Center(
            child: Container(
          height: 240.0,
          width: 240.0,
          color: Colors.green,
          child: Align(
              alignment: Alignment.topRight,
              child: Image.network(
                "https://www.geeksforgeeks.org/wp-content/uploads/gfg_200X200-1.png",
                width: 100,
              )),
        )));
  }
}

Producción: