MainDrawer singleton

lib/activeFires.dart

@@ -203,7 +203,7 @@ class _ActiveFiresPageState extends State<ActiveFiresPage> {
           return Scaffold(
             key: _scaffoldKey,
             // FIXME new?
-            drawer: new MainDrawer(context),
+            drawer: MainDrawer.getDrawer(context),
             appBar: new AppBar(
               title: Text(title),
               leading: IconButton(

lib/fireNotificationList.dart

@@ -178,7 +178,7 @@ class _FireNotificationListState extends State<FireNotificationList> {
 
           return Scaffold(
               key: _scaffoldKey,
-              drawer: new MainDrawer(context),
+              drawer: MainDrawer.getDrawer(context),
               appBar: new AppBar(
                   title: Text(title),
                   leading: IconButton(

lib/homePage.dart

@@ -27,7 +27,7 @@ class HomePage extends StatelessWidget {
   Widget build(BuildContext context) {
     return new Scaffold(
         key: _scaffoldKey,
-        drawer: new MainDrawer(context),
+        drawer: MainDrawer.getDrawer(context),
         floatingActionButtonLocation: FloatingActionButtonLocation.centerFloat,
         floatingActionButton:
             Column(mainAxisAlignment: MainAxisAlignment.end, children: <Widget>[

lib/mainDrawer.dart

@@ -2,6 +2,7 @@ import 'package:badge/badge.dart';
 import 'package:comunes_flutter/comunes_flutter.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_redux/flutter_redux.dart';
+import 'package:flutter_simple_dependency_injection/injector.dart';
 
 import 'activeFires.dart';
 import 'colors.dart';
@@ -37,6 +38,18 @@ class _ViewModel {
 class MainDrawer extends Drawer {
   MainDrawer(BuildContext context, {key})
       : super(key: key, child: mainDrawer(context));
+
+  static getDrawer(BuildContext context) {
+    Injector inj = Injector.getInjector();
+    MainDrawer d;
+    try {
+      d = inj.get<MainDrawer>();
+    } catch (e) {
+      inj.map<MainDrawer>((i) => new MainDrawer(context), isSingleton: true);
+      d = inj.get<MainDrawer>();
+    }
+    return d;
+  }
 }
 
 Widget mainDrawer(BuildContext context) {