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| import 'package:flutter/material.dart'; | |
| //TODO: Step 2 - Import the rFlutter_Alert package here. | |
| import 'package:rflutter_alert/rflutter_alert.dart'; | |
| import 'quiz_brain.dart'; | |
| QuizBrain quizBrain = QuizBrain(); | |
| void main() => runApp(Quizzler()); | |
| class Quizzler extends StatelessWidget { | |
| @override | |
| Widget build(BuildContext context) { | |
| return MaterialApp( | |
| home: Scaffold( | |
| backgroundColor: Colors.grey.shade900, | |
| body: SafeArea( | |
| child: Padding( | |
| padding: EdgeInsets.symmetric(horizontal: 10.0), | |
| child: QuizPage(), | |
| ), | |
| ), | |
| ), | |
| ); | |
| } | |
| } | |
| class QuizPage extends StatefulWidget { | |
| @override | |
| _QuizPageState createState() => _QuizPageState(); | |
| } | |
| class _QuizPageState extends State<QuizPage> { | |
| List<Icon> scoreKeeper = []; | |
| void checkAnswer(bool userPickedAnswer) { | |
| bool correctAnswer = quizBrain.getCorrectAnswer(); | |
| setState(() { | |
| if (quizBrain.isFinished() == true) { | |
| Alert( | |
| context: context, | |
| title: 'Finished!', | |
| desc: 'You\'ve reached the end of the quiz.', | |
| ).show(); | |
| quizBrain.reset(); | |
| scoreKeeper = []; | |
| } else { | |
| if (userPickedAnswer == correctAnswer) { | |
| scoreKeeper.add(Icon( | |
| Icons.check, | |
| color: Colors.green, | |
| )); | |
| } else { | |
| scoreKeeper.add(Icon( | |
| Icons.close, | |
| color: Colors.red, | |
| )); | |
| } | |
| quizBrain.nextQuestion(); | |
| } | |
| }); | |
| } | |
| @override | |
| Widget build(BuildContext context) { | |
| return Column( | |
| mainAxisAlignment: MainAxisAlignment.spaceBetween, | |
| crossAxisAlignment: CrossAxisAlignment.stretch, | |
| children: <Widget>[ | |
| Expanded( | |
| flex: 5, | |
| child: Padding( | |
| padding: EdgeInsets.all(10.0), | |
| child: Center( | |
| child: Text( | |
| quizBrain.getQuestionText(), | |
| textAlign: TextAlign.center, | |
| style: TextStyle( | |
| fontSize: 25.0, | |
| color: Colors.white, | |
| ), | |
| ), | |
| ), | |
| ), | |
| ), | |
| Expanded( | |
| child: Padding( | |
| padding: EdgeInsets.all(15.0), | |
| child: FlatButton( | |
| textColor: Colors.white, | |
| color: Colors.green, | |
| child: Text( | |
| 'True', | |
| style: TextStyle( | |
| color: Colors.white, | |
| fontSize: 20.0, | |
| ), | |
| ), | |
| onPressed: () { | |
| //The user picked true. | |
| checkAnswer(true); | |
| }, | |
| ), | |
| ), | |
| ), | |
| Expanded( | |
| child: Padding( | |
| padding: EdgeInsets.all(15.0), | |
| child: FlatButton( | |
| color: Colors.red, | |
| child: Text( | |
| 'False', | |
| style: TextStyle( | |
| fontSize: 20.0, | |
| color: Colors.white, | |
| ), | |
| ), | |
| onPressed: () { | |
| //The user picked false. | |
| checkAnswer(false); | |
| }, | |
| ), | |
| ), | |
| ), | |
| Row( | |
| children: scoreKeeper, | |
| ) | |
| ], | |
| ); | |
| } | |
| } | |
| /* | |
| question1: 'You can lead a cow down stairs but not up stairs.', false, | |
| question2: 'Approximately one quarter of human bones are in the feet.', true, | |
| question3: 'A slug\'s blood is green.', true, | |
| */ |
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