initial commit

lib/data/questions.dart

@@ -0,0 +1,55 @@
+import 'package:adv_basics/models/quiz_question.dart';
+
+const questions = [
+  QuizQuestion(
+    'What are the main building blocks of Flutter UIs?',
+    [
+      'Widgets',
+      'Components',
+      'Blocks',
+      'Functions',
+    ],
+  ),
+  QuizQuestion('How are Flutter UIs built?', [
+    'By combining widgets in code',
+    'By combining widgets in a visual editor',
+    'By defining widgets in config files',
+    'By using XCode for iOS and Android Studio for Android',
+  ]),
+  QuizQuestion(
+    'What\'s the purpose of a StatefulWidget?',
+    [
+      'Update UI as data changes',
+      'Update data as UI changes',
+      'Ignore data changes',
+      'Render UI that does not depend on data',
+    ],
+  ),
+  QuizQuestion(
+    'Which widget should you try to use more often: StatelessWidget or StatefulWidget?',
+    [
+      'StatelessWidget',
+      'StatefulWidget',
+      'Both are equally good',
+      'None of the above',
+    ],
+  ),
+  QuizQuestion(
+    'What happens if you change data in a StatelessWidget?',
+    [
+      'The UI is not updated',
+      'The UI is updated',
+      'The closest StatefulWidget is updated',
+      'Any nested StatefulWidgets are updated',
+    ],
+  ),
+  QuizQuestion(
+    'How should you update data inside of StatefulWidgets?',
+    [
+      'By calling setState()',
+      'By calling updateData()',
+      'By calling updateUI()',
+      'By calling updateState()',
+    ],
+  ),
+];

lib/main.dart

@@ -0,0 +1,7 @@
+import 'package:adv_basics/quiz.dart';
+
+import 'package:flutter/material.dart';
+
+void main() {
+  runApp(const Quiz());
+}

lib/models/quiz_question.dart

@@ -0,0 +1,6 @@
+class QuizQuestion {
+  const QuizQuestion(this.text, this.answers);
+
+  final String text;
+  final List<String> answers;
+}

lib/questions_screen.dart

@@ -0,0 +1,17 @@
+import 'package:flutter/material.dart';
+
+class QuestionsScreen extends StatefulWidget {
+  const QuestionsScreen(void Function() switchScreen, {super.key});
+
+  @override
+  State<QuestionsScreen> createState() {
+    return _QuestionsScreenState();
+  }
+}
+
+class _QuestionsScreenState extends State<QuestionsScreen> {
+  @override
+  Widget build(context) {
+    return const Text('QuestionsScreen');
+  }
+}

lib/quiz.dart

@@ -0,0 +1,51 @@
+import 'package:adv_basics/questions_screen.dart';
+import 'package:adv_basics/start_screen.dart';
+import 'package:flutter/material.dart';
+
+class Quiz extends StatefulWidget {
+  const Quiz({super.key});
+
+  @override
+  State<Quiz> createState() {
+    return _QuizState();
+  }
+}
+
+class _QuizState extends State<Quiz> {
+  var activeScreen = 'start-screen';
+
+  void switchScreen() {
+    setState(() {
+      activeScreen = 'questions-screen';
+    });
+  }
+
+  @override
+  Widget build(context) {
+    Widget screenWidget = StartScreen(switchScreen);
+
+    if (activeScreen == 'questions-screen') {
+      screenWidget = QuestionsScreen(switchScreen);
+    }
+
+    return MaterialApp(
+      home: Scaffold(
+        body: Container(
+          decoration: const BoxDecoration(
+            gradient: LinearGradient(
+              colors: [
+                Color.fromARGB(255, 78, 13, 151),
+                Color.fromARGB(255, 107, 15, 168),
+              ],
+              begin: Alignment.topLeft,
+              end: Alignment.bottomRight,
+            ),
+          ),
+          child: activeScreen == 'start-screen'
+              ? StartScreen(switchScreen)
+              : QuestionsScreen(switchScreen),
+        ),
+      ),
+    );
+  }
+}

lib/start_screen.dart

@@ -0,0 +1,42 @@
+import 'package:flutter/material.dart';
+
+class StartScreen extends StatelessWidget {
+  const StartScreen(this.startQuiz, {super.key});
+
+  final void Function() startQuiz;
+
+  @override
+  Widget build(context) {
+    return Center(
+      child: Column(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          Image.asset(
+            'assets/images/quiz-logo.png',
+            width: 300,
+            color: const Color.fromARGB(150, 255, 255, 255),
+          ),
+          const SizedBox(
+            height: 80,
+          ),
+          const Text(
+            'Learn Flutter the fun way!',
+            style: TextStyle(
+              color: Color.fromARGB(255, 237, 223, 252),
+              fontSize: 24,
+            ),
+          ),
+          const SizedBox(height: 30),
+          OutlinedButton.icon(
+            onPressed: startQuiz,
+            style: OutlinedButton.styleFrom(
+              foregroundColor: Colors.white,
+            ),
+            icon: const Icon(Icons.arrow_right_alt),
+            label: const Text('Start Quiz'),
+          )
+        ],
+      ),
+    );
+  }
+}