flutter_displaymode helper class

display_mode_util.dart

import 'dart:developer';

import 'package:flutter_displaymode/flutter_displaymode.dart';

class DisplayModeUtil {

  static Future<void> setOptimalDisplayMode() async {
    final DisplayMode optimalDisplayMode = await _getOptimalDisplayMode();
    if (optimalDisplayMode != null) {
      FlutterDisplayMode.setMode(optimalDisplayMode);
    }
    return;
  }

  static Future<DisplayMode> _getOptimalDisplayMode() async {
    try {
      final List<DisplayMode> supported = await FlutterDisplayMode.supported;
      final DisplayMode current = await FlutterDisplayMode.current;

      final List<DisplayMode> sameResolution = supported
          .where((DisplayMode m) =>
              m.width == current.width && m.height == current.height)
          .toList();

      sameResolution.sort((DisplayMode a, DisplayMode b) =>
          b.refreshRate.compareTo(a.refreshRate));

      final DisplayMode mostOptimalMode =
          sameResolution.isNotEmpty ? sameResolution.first : current;

      log('All display modes with same resolution: $sameResolution'
          '\nMost optimal display mode: $mostOptimalMode');

      return mostOptimalMode;
    } catch (ex, trace) {
      log('Error{ ${ex.toString()} } while selecting display mode, trace:\n$trace');
      return null;
    }
  }
}

main.dart

import 'package:flutter/material.dart';
import 'utils/display_mode_util.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await DisplayModeUtil.setOptimalDisplayMode();
  runApp(MyApp());
}