AspectRatio 调整宽高比

main.dart

import 'package:flutter/material.dart';

void main() {
  runApp(MaterialApp(
    title: "AspectRatio调整宽高比",
    home: LayoutDemo(),
  ));
}

class LayoutDemo extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("AspectRatio调整宽高比"),
      ),
      body: Container(
        height: 200.0,
        child: AspectRatio(
          aspectRatio: 1.5,
          child: Container(
            color: Colors.green,
          ),
        ),
      ),
    );
  }
}