34 Flutter: AlertDialog

main.dart
import 'package:flutter/material.dart';
import 'dart:async';
void main(){
runApp(new MaterialApp(
home: new MyApp(),
));
}
class MyApp extends StatefulWidget {
_State createState() => new _State();
}
//State is information of the application that can change over time or when some actions are taken.
class _State extends State<MyApp>{
Future _showAlert(BuildContext context, String message) async {
return showDialog(
context: context,
child: new AlertDialog(
title: new Text(message),
actions: <Widget>[
new FlatButton(onPressed: () => Navigator.pop(context), child: new Text('Ok'))
],
)
);
}
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text('Name here'),
backgroundColor: Colors.red,
),
//hit Ctrl+space in intellij to know what are the options you can use in flutter widgets
body: new Container(
padding: new EdgeInsets.all(32.0),
child: new Center(
child: new Column(
children: <Widget>[
new Text('Add widgets here'),
new RaisedButton(onPressed: () => _showAlert(context, 'Do you like flutter, I do!'), child: new Text('Click me'),)
],
),
),
),
);
}
}