Adding a landing page ui

lib/landing_pages/page_1.dart

@@ -0,0 +1,142 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_swiper/flutter_swiper.dart';
+import 'package:flutter_ui_challenges/core/presentation/res/assets.dart';
+import 'package:flutter_ui_challenges/src/widgets/swiper_pagination.dart';
+import 'package:cached_network_image/cached_network_image.dart';
+import 'package:font_awesome_flutter/font_awesome_flutter.dart';
+
+class IntroThreePage extends StatefulWidget {
+  static final String path = "lib/src/pages/onboarding/intro3.dart";
+  @override
+  _IntroThreePageState createState() => _IntroThreePageState();
+}
+
+class _IntroThreePageState extends State<IntroThreePage> {
+  final SwiperController  _swiperController = SwiperController();
+  final int _pageCount = 3;
+  int _currentIndex = 0;
+  final List<String> titles = [
+    "Lorem ipsum dolor \nsit amet, consectetur adipiscing \n elit placerat. ",
+    "Aliquam eget justo \n nec arcu ultricies elementum \n id at metus. ",
+    "Nulla facilisi. \nFusce non tempus risus.\n Sed ultrices scelerisque sem,"
+  ];
+  final List<Color> pageBgs = [
+    Colors.blue.shade300,
+    Colors.grey.shade600,
+    Colors.cyan.shade300
+  ];
+
+  @override
+  Widget build(BuildContext context){
+    return Scaffold(
+      backgroundColor: Colors.white,
+      body: Stack(
+        children: <Widget>[
+          Center(child: Container(
+            height: 300,
+            margin: const EdgeInsets.only(left: 8.0, right: 8.0),
+            decoration: BoxDecoration(
+              color: Theme.of(context).accentColor,
+              borderRadius: BorderRadius.circular(5.0)
+            ),
+          ),),
+          Column(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: <Widget>[
+              Expanded(child: Swiper(
+                index: _currentIndex,
+                controller: _swiperController,
+                itemCount: _pageCount,
+                onIndexChanged: (index) {
+                  setState(() {
+                    _currentIndex = index;
+                  });
+                },
+                loop: false,
+                itemBuilder: (context, index){
+                  return _buildPage(title: titles[index], icon: images[index+2], pageBg: pageBgs[index]);
+                },
+                pagination: SwiperPagination(
+                  builder: CustomPaginationBuilder(
+                  activeSize: Size(10.0, 20.0),
+                  size: Size(10.0, 15.0),
+                  color: Colors.grey.shade600
+                  )
+                ),
+              )),
+              SizedBox(height: 10.0),
+              _buildButtons(),
+            ],
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildButtons(){
+    return Container(
+      margin: const EdgeInsets.only(right: 16.0),
+      child: Row(
+        mainAxisAlignment: MainAxisAlignment.spaceBetween,
+        children: <Widget>[
+          FlatButton(
+            textColor: Colors.grey.shade600,
+            child: Text("Skip"),
+            onPressed: (){
+              Navigator.of(context).pushReplacementNamed('home');
+            },
+          ),
+          IconButton(
+            icon: Icon(_currentIndex < _pageCount - 1 ? Icons.arrow_forward_ios : FontAwesomeIcons.check),
+            onPressed: () async {
+              if(_currentIndex < _pageCount - 1)
+                _swiperController.next();
+              else {
+                Navigator.of(context).pushReplacementNamed('home');
+              }
+            },
+          )
+        ],
+      ),
+    );
+  }
+
+  Widget _buildPage({String title, String icon, Color pageBg}) {
+    final TextStyle titleStyle = TextStyle(
+      fontWeight: FontWeight.w500,
+      fontSize: 20.0,
+      color: Colors.white
+    );
+    return Container(
+      width: double.infinity,
+      margin: const EdgeInsets.fromLTRB(16.0, 50.0,16.0,40.0),
+      padding: const EdgeInsets.all(16.0),
+      decoration: BoxDecoration(
+        borderRadius: BorderRadius.circular(30.0),
+        color: pageBg
+      ),
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: <Widget>[
+          SizedBox(height: 20.0),
+          Text(title, textAlign: TextAlign.center, style: titleStyle,),
+          SizedBox(height: 30.0),
+          Expanded(
+            child:ClipOval(child: Container(
+              height: 300,
+              width: 300,
+              decoration: BoxDecoration(
+                image: DecorationImage(
+                  image: CachedNetworkImageProvider(icon),
+                  fit: BoxFit.cover
+                )
+              ),  
+            )) ,
+          ),
+
+          SizedBox(height: 50.0),
+        ],
+      ),
+    );
+  }
+}