Flutter CupertinoActionSheet

ios 风格的底部弹出的提示框。

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        // This is the theme of your application.
        //
        // Try running your application with "flutter run". You'll see the
        // application has a blue toolbar. Then, without quitting the app, try
        // changing the primarySwatch below to Colors.green and then invoke
        // "hot reload" (press "r" in the console where you ran "flutter run",
        // or simply save your changes to "hot reload" in a Flutter IDE).
        // Notice that the counter didn't reset back to zero; the application
        // is not restarted.
        primarySwatch: Colors.blue,
      ),
      home: MyStatefulWidget(),
    );
  }
}

class MyStatefulWidget extends StatefulWidget {
  @override
  _MyStatefulWidgetState createState() => _MyStatefulWidgetState();
}

class _MyStatefulWidgetState extends State<MyStatefulWidget> {
  @override
  Widget build(BuildContext context) {
    return CupertinoPageScaffold(
      child: Center(
        child: CupertinoButton(
          onPressed: () {
            showCupertinoModalPopup<void>(
              context: context,
              builder: (BuildContext context) => CupertinoActionSheet(
                title: const Text('Title'),
                message: const Text('Message'),
                actions: <CupertinoActionSheetAction>[
                  CupertinoActionSheetAction(
                    child: const Text('Action One'),
                    onPressed: () {
                      Navigator.pop(context);
                    },
                  ),
                  CupertinoActionSheetAction(
                    child: const Text('Action Two'),
                    onPressed: () {
                      Navigator.pop(context);
                    },
                  )
                ],
              ),
            );
          },
          child: const Text('CupertinoActionSheet'),
        ),
      ),
    );
  }
}