bug fix 1.0 (android logo, old device, firstname, exercise save)

lib/util/session.dart

@@ -2,7 +2,8 @@ import 'package:aitrainer_app/localization/app_language.dart';
 import 'package:aitrainer_app/service/api.dart';
 import 'package:aitrainer_app/service/customer_service.dart';
 import 'package:aitrainer_app/service/exercisetype_service.dart';
-import 'package:aitrainer_app/viewmodel/exercise_type_changing_view_model.dart';
+import 'package:devicelocale/devicelocale.dart';
+import 'package:flutter/services.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:aitrainer_app/model/auth.dart';
 
@@ -19,11 +20,33 @@ class Session  {
 
     if ( _auth.firstLoad ) {
       _fetchToken(_sharedPreferences, callback);
+      initDeviceLocale();
       appLanguage.fetchLocale();
     }
 
   }
 
+  Future<void> initDeviceLocale() async {
+    List languages;
+    String currentLocale;
+
+    // Platform messages may fail, so we use a try/catch PlatformException.
+    try {
+      languages = await Devicelocale.preferredLanguages;
+      Auth().deviceLanguages = languages;
+      print("device langs " + languages.toString());
+
+    } on PlatformException {
+      print("Error obtaining preferred languages");
+    }
+    try {
+      currentLocale = await Devicelocale.currentLocale;
+      print("Device currentlocale " + currentLocale);
+    } on PlatformException {
+      print("Error obtaining current locale");
+    }
+  }
+
   /*
     Auth flow of the user, see auth.dart
    */