import 'package:flutter/services.dart'; class CaffeineService { static const _methodChannel = MethodChannel("com.vodemn.lightmeter/keepScreenOn"); const CaffeineService(); Future<bool> isKeepScreenOn() async { return _methodChannel.invokeMethod<bool>("isKeepScreenOn").then((value) => value!); } Future<bool> keepScreenOn(bool keep) async { return _methodChannel.invokeMethod<bool>("setKeepScreenOn", keep).then((value) => value!); } }