AlertDialog 提示对话框

main.dart

import 'package:flutter/material.dart';

void main(){
  runApp(MyApp());
}
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'AlertDialog',
      home: Scaffold(
        appBar: AppBar(
          title: Text("AlertDialog"),
        ),
        body: Center(
          child: AlertDialog(
            title: Text("提示"),
            content: SingleChildScrollView(
              child: ListBody(
                children: <Widget>[
                  Text("是否要删除"),
                  Text("一旦删除数据不可恢复")
                ],
              ),
            ),
//            对话框操作
            actions: <Widget>[
              FlatButton(
                child: Text('确定'),
                onPressed: (){},
              ),
              FlatButton(
                child: Text('取消'),
                onPressed: (){},
              ),
            ],
          ),
        ),
      ),
    );
  }
}