#15: Refactor MapPage and added lint analyzer

analysis_options.yaml

@@ -0,0 +1,18 @@
+include: package:pedantic/analysis_options.yaml
+
+analyzer:
+  exclude:
+    - lib/src/locations.g.dart
+
+linter:
+  rules:
+    - always_declare_return_types
+    - camel_case_types
+    - empty_constructor_bodies
+    - annotate_overrides
+    - avoid_init_to_null
+    - constant_identifier_names
+    - one_member_abstracts
+    - slash_for_doc_comments
+    - sort_constructors_first
+    - unnecessary_brace_in_string_interps

lib/pages/map/map_bloc.dart

@@ -1,6 +1,20 @@
+import 'dart:async';
+
 import 'package:flutter_app/bloc/bloc_provider.dart';
+import 'package:google_maps_flutter/google_maps_flutter.dart';
 
 class MapBloc extends BlocBase {
+  StreamController<MapType> _mapTypeController =
+      StreamController<MapType>.broadcast();
+
+  Stream<MapType> get mayType => _mapTypeController.stream;
+
   @override
-  void dispose() {}
+  void dispose() {
+    _mapTypeController.close();
+  }
+
+  void setMayType(MapType mayType) {
+    _mapTypeController.sink.add(mayType);
+  }
 }

lib/pages/map/map_page.dart

@@ -1,15 +1,12 @@
 import 'dart:async';
 
 import 'package:flutter/material.dart';
+import 'package:flutter_app/bloc/bloc_provider.dart';
+import 'package:flutter_app/pages/map/map_bloc.dart';
 import 'package:google_maps_flutter/google_maps_flutter.dart';
 
-class MapPage extends StatefulWidget {
-  @override
-  _MapPageState createState() => _MapPageState();
-}
-
-class _MapPageState extends State<MapPage> {
-  Completer<GoogleMapController> _controller = Completer();
+class MapPage extends StatelessWidget {
+  final Completer<GoogleMapController> _controller = Completer();
 
   static final CameraPosition _kGooglePlex = CameraPosition(
     target: LatLng(37.42796133580664, -122.085749655962),
@@ -24,21 +21,40 @@ class _MapPageState extends State<MapPage> {
 
   @override
   Widget build(BuildContext context) {
+    final MapBloc mapBloc = BlocProvider.of(context);
     return new Scaffold(
       appBar: AppBar(
         title: Text("Maps"),
+        actions: <Widget>[
+          IconButton(
+            icon: Icon(Icons.satellite),
+            onPressed: () => mapBloc.setMayType(MapType.satellite),
+          ),
+          IconButton(
+            icon: Icon(Icons.map),
+            onPressed: () => mapBloc.setMayType(MapType.normal),
+          ),
+          IconButton(
+            icon: Icon(Icons.dashboard),
+            onPressed: () => mapBloc.setMayType(MapType.terrain),
+          ),
+        ],
       ),
-      body: GoogleMap(
-        mapType: MapType.hybrid,
-        initialCameraPosition: _kGooglePlex,
-        onMapCreated: (GoogleMapController controller) {
-          _controller.complete(controller);
-        },
-      ),
-      floatingActionButton: FloatingActionButton.extended(
+      body: StreamBuilder<MapType>(
+          stream: mapBloc.mayType,
+          initialData: MapType.hybrid,
+          builder: (context, snapshot) {
+            return GoogleMap(
+              mapType: snapshot.data,
+              initialCameraPosition: _kGooglePlex,
+              zoomGesturesEnabled: true,
+              onMapCreated: (GoogleMapController controller) {
+                _controller.complete(controller);
+              },
+            );
+          }),
+      floatingActionButton: FloatingActionButton(
         onPressed: _goToTheLake,
-        label: Text('To the lake!'),
-        icon: Icon(Icons.directions_boat),
       ),
     );
   }

pubspec.yaml

@@ -13,6 +13,8 @@ dependencies:
   path_provider: ^0.4.1
   rxdart: ^0.19.0
   google_maps_flutter: ^0.5.21+8
+  http: ^0.12.0+1
+  json_serializable: ^2.0.2
 
 dev_dependencies:
   flutter_test: