Initialize Hive asynchoniously in order to improve app performance

android/app/build.gradle

@@ -41,7 +41,7 @@ android {
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "com.eatvioapp.app"
-        minSdkVersion 21
+        minSdkVersion 23
         targetSdkVersion flutter.targetSdkVersion
         multiDexEnabled true
         versionCode flutterVersionCode.toInteger()

lib/main.dart

@@ -2,18 +2,17 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_localizations/flutter_localizations.dart';
 import 'core/app_export.dart';
+import 'package:hive_flutter/hive_flutter.dart';
 
 var globalMessengerKey = GlobalKey<ScaffoldMessengerState>();
-void main() {
-  WidgetsFlutterBinding.ensureInitialized();
-  Future.wait([
-    SystemChrome.setPreferredOrientations([
-      DeviceOrientation.portraitUp,
-    ]),
-    PrefUtils().init()
-  ]).then((value) {
-    runApp(MyApp());
-  });
+void main() async {
+  var path = '/';
+  await Hive.initFlutter(path);
+  SystemChrome.setPreferredOrientations([
+    DeviceOrientation.portraitUp,
+  ]);
+  await PrefUtils().init();
+  runApp(MyApp());
 }
 
 class MyApp extends StatelessWidget {

pubspec.yaml

@@ -15,7 +15,8 @@ dependencies:
   flutter_svg: ^2.0.9
   equatable: ^2.0.0
   validators: ^3.0.0
-  hive: ^4.0.0
+  hive: ^2.2.3
+  hive_flutter: ^1.1.0
   isar_flutter_libs: ^4.0.0-dev.13
   path_provider: ^2.1.0