Update main.dart

lib/main.dart

@@ -4,6 +4,7 @@ import 'package:bus_infotainment/pages/audio_cache_test.dart';
 import 'package:bus_infotainment/pages/tfl_dataset_test.dart';
 import 'package:bus_infotainment/singletons/live_information.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
@@ -11,6 +12,14 @@ void main() async {
   LiveInformation liveInformation = LiveInformation();
   await liveInformation.Initialize();
 
+  // Disalow screen to turn off on android
+  await SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersiveSticky);
+  // Disalow landscape mode
+  await SystemChrome.setPreferredOrientations([
+    DeviceOrientation.portraitUp,
+    DeviceOrientation.portraitDown,
+  ]);
+
   runApp(const MyApp());
 }