19 - Todo App - 2

 

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Alert(),
    );
  }
}

class Alert extends StatefulWidget {
  @override
  _AlertState createState() => _AlertState();
}

class _AlertState extends State<Alert> {

  List<String> listViewdata = [
    "a",
    "b",
    "c",
    "d",
    "e",
    "f",
  ];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Column(
        children: <Widget>[
          Expanded(
            child: ListView(
              children : listViewdata.map((data){
                return ListTile(
                  title : Text(data),
                );
              }).toList()
            ),
          ),
          Center(
            child: RaisedButton(
              child: Text("AlertButton"),
              onPressed: (){
                showAlertDialog(context);
              },
            ),
          ),
        ],
      ),
    );
  }

  showAlertDialog(BuildContext context) {

    Widget okButton = FlatButton(
      child: Text("OK"),
      onPressed: (){
        Navigator.of(context).pop();
      },
    );

    AlertDialog alert = AlertDialog(
      title: Text("title"),
      content: Text("Contents"),
      actions: [
        okButton,
      ],
    );

    showDialog(
      context: context,
      builder: (BuildContext context) {
        return alert;
      }
    );

  }

}