mobile-app/lib/presentation/screens/control_device/sc_control_device.dart

import 'package:farm_tpf/data/repository/repository.dart';
import 'package:farm_tpf/presentation/screens/control_device/widget_device_list.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';

import 'bloc/device_bloc.dart';

class ControlDeviceScreen extends StatefulWidget {
  @override
  _ControlDeviceScreenState createState() => _ControlDeviceScreenState();
}

class _ControlDeviceScreenState extends State<ControlDeviceScreen> {
  BuildContext _blocContext;
  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    _blocContext = context;
    return Scaffold(
        appBar: AppBar(
          centerTitle: true,
          title: Text("Điều khiển thiết bị"),
        ),
        body: BlocProvider<DeviceBloc>(
            create: (context) =>
                DeviceBloc(repository: Repository())..add(OpenScreen()),
            child: _buildContent()));
  }

  Widget _buildContent() {
    return BlocBuilder<DeviceBloc, DeviceState>(
      builder: (context, state) {
        if (state is DisplayDevice) {
          if (state.loading) {
            return Container(
              child: Center(
                child: CircularProgressIndicator(),
              ),
            );
          }

          if (state.devices != null) {
            return Container(
              child: WidgetDeviceList(devices: state.devices),
            );
          }
          return Container();
        } else {
          return Container();
        }
      },
    );
  }
}