home: Show articles from api

lib/data/util/Constant.dart

@@ -1,2 +1,2 @@
-const String API_URL = "https://newsapi.org/v2";
+const String API_URL = "newsapi.org";
 const String API_KEY = "605cf95fc97247b89e76fff31e4f75b6";

lib/injection_container.dart

@@ -27,5 +27,5 @@ Future<void> initDependency() async {
   sl.registerSingleton(FetchNewsArticleUseCase(sl()));
 
   // Bloc as Singleton
-  sl.registerSingleton(HomeBloc(sl()));
+  sl.registerFactory(() => HomeBloc(sl()));
 }

lib/main.dart

@@ -1,124 +1,29 @@
 import 'package:flutter/material.dart';
-
-void main() {
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:sample_news/injection_container.dart';
+import 'package:sample_news/presentation/screen/HomeScreen.dart';
+import 'package:sample_news/presentation/screen/bloc/HomeBloc.dart';
+import 'package:sample_news/presentation/screen/bloc/HomeEvent.dart';
+
+Future<void> main() async {
+  await initDependency();
   runApp(const MyApp());
 }
 
 class MyApp extends StatelessWidget {
   const MyApp({super.key});
 
-  // This widget is the root of your application.
-  @override
-  Widget build(BuildContext context) {
-    return MaterialApp(
-      title: 'Flutter Demo',
-      theme: ThemeData(
-        // This is the theme of your application.
-        //
-        // TRY THIS: Try running your application with "flutter run". You'll see
-        // the application has a purple toolbar. Then, without quitting the app,
-        // try changing the seedColor in the colorScheme below to Colors.green
-        // and then invoke "hot reload" (save your changes or press the "hot
-        // reload" button in a Flutter-supported IDE, or press "r" if you used
-        // the command line to start the app).
-        //
-        // Notice that the counter didn't reset back to zero; the application
-        // state is not lost during the reload. To reset the state, use hot
-        // restart instead.
-        //
-        // This works for code too, not just values: Most code changes can be
-        // tested with just a hot reload.
-        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
-        useMaterial3: true,
-      ),
-      home: const MyHomePage(title: 'Flutter Demo Home Page'),
-    );
-  }
-}
-
-class MyHomePage extends StatefulWidget {
-  const MyHomePage({super.key, required this.title});
-
-  // This widget is the home page of your application. It is stateful, meaning
-  // that it has a State object (defined below) that contains fields that affect
-  // how it looks.
-
-  // This class is the configuration for the state. It holds the values (in this
-  // case the title) provided by the parent (in this case the App widget) and
-  // used by the build method of the State. Fields in a Widget subclass are
-  // always marked "final".
-
-  final String title;
-
-  @override
-  State<MyHomePage> createState() => _MyHomePageState();
-}
-
-class _MyHomePageState extends State<MyHomePage> {
-  int _counter = 0;
-
-  void _incrementCounter() {
-    setState(() {
-      // This call to setState tells the Flutter framework that something has
-      // changed in this State, which causes it to rerun the build method below
-      // so that the display can reflect the updated values. If we changed
-      // _counter without calling setState(), then the build method would not be
-      // called again, and so nothing would appear to happen.
-      _counter++;
-    });
-  }
-
   @override
   Widget build(BuildContext context) {
-    // This method is rerun every time setState is called, for instance as done
-    // by the _incrementCounter method above.
-    //
-    // The Flutter framework has been optimized to make rerunning build methods
-    // fast, so that you can just rebuild anything that needs updating rather
-    // than having to individually change instances of widgets.
-    return Scaffold(
-      appBar: AppBar(
-        // TRY THIS: Try changing the color here to a specific color (to
-        // Colors.amber, perhaps?) and trigger a hot reload to see the AppBar
-        // change color while the other colors stay the same.
-        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
-        // Here we take the value from the MyHomePage object that was created by
-        // the App.build method, and use it to set our appbar title.
-        title: Text(widget.title),
-      ),
-      body: Center(
-        // Center is a layout widget. It takes a single child and positions it
-        // in the middle of the parent.
-        child: Column(
-          // Column is also a layout widget. It takes a list of children and
-          // arranges them vertically. By default, it sizes itself to fit its
-          // children horizontally, and tries to be as tall as its parent.
-          //
-          // Column has various properties to control how it sizes itself and
-          // how it positions its children. Here we use mainAxisAlignment to
-          // center the children vertically; the main axis here is the vertical
-          // axis because Columns are vertical (the cross axis would be
-          // horizontal).
-          //
-          // TRY THIS: Invoke "debug painting" (choose the "Toggle Debug Paint"
-          // action in the IDE, or press "p" in the console), to see the
-          // wireframe for each widget.
-          mainAxisAlignment: MainAxisAlignment.center,
-          children: <Widget>[
-            const Text(
-              'You have pushed the button this many times:',
-            ),
-            Text(
-              '$_counter',
-              style: Theme.of(context).textTheme.headlineMedium,
-            ),
-          ],
+    return BlocProvider<HomeBloc>(
+      create: (context) => sl()..add(const GetArticles()),
+      child: MaterialApp(
+        title: 'Flutter Demo',
+        theme: ThemeData(
+          colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
+          useMaterial3: true,
         ),
-      ),
-      floatingActionButton: FloatingActionButton(
-        onPressed: _incrementCounter,
-        tooltip: 'Increment',
-        child: const Icon(Icons.add),
+        home: const HomeScreen(),
       ),
     );
   }

lib/presentation/screen/HomeScreen.dart

@@ -0,0 +1,60 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:sample_news/presentation/screen/bloc/HomeBloc.dart';
+import 'package:sample_news/presentation/screen/bloc/HomeState.dart';
+
+class HomeScreen extends StatelessWidget {
+  const HomeScreen({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: buildAppBar(),
+      body: buildBody(),
+    );
+  }
+
+  buildAppBar() {
+    return AppBar(
+      title: const Text(
+        'Sample News',
+        style: TextStyle(
+          color: Colors.black,
+        ),
+      ),
+    );
+  }
+
+  buildBody() {
+    return BlocBuilder<HomeBloc, HomeState>(
+      builder: (_, state) {
+        if (state is ArticleLoading) {
+          return const Center(
+            child: CircularProgressIndicator(),
+          );
+        }
+
+        if (state is ArticleError) {
+          return const Center(
+              child: Icon(Icons.refresh)
+          );
+        }
+
+        if (state is ArticleDone) {
+          return ListView.builder(
+            itemCount: state.articles?.length,
+            itemBuilder: (_, index) {
+              final article = state.articles?[index];
+              return ListTile(
+                title: Text(article?.title ?? ""),
+                subtitle: Text(article?.description ?? ""),
+              );
+            },
+          );
+        }
+
+        return const SizedBox();
+      },
+    );
+  }
+}