battery_plus 3.0.5

battery_plus: ^3.0.5 copied to clipboard

example/lib/main.dart

// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// ignore_for_file: public_member_api_docs

import 'dart:async';

import 'package:flutter/material.dart';
import 'package:battery_plus/battery_plus.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, this.title}) : super(key: key);

  final String? title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  final Battery _battery = Battery();

  BatteryState? _batteryState;
  StreamSubscription<BatteryState>? _batteryStateSubscription;

  @override
  void initState() {
    super.initState();
    _battery.batteryState.then(_updateBatteryState);
    _batteryStateSubscription =
        _battery.onBatteryStateChanged.listen(_updateBatteryState);
  }

  void _updateBatteryState(BatteryState state) {
    if (_batteryState == state) return;
    setState(() {
      _batteryState = state;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Plugin example app'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Text('$_batteryState'),
            ElevatedButton(
              onPressed: () {
                _battery.batteryLevel.then(
                  (batteryLevel) {
                    showDialog<void>(
                      context: context,
                      builder: (_) => AlertDialog(
                        content: Text('Battery: $batteryLevel%'),
                        actions: <Widget>[
                          TextButton(
                            onPressed: () {
                              Navigator.pop(context);
                            },
                            child: const Text('OK'),
                          )
                        ],
                      ),
                    );
                  },
                );
              },
              child: const Text('Get battery level'),
            ),
            ElevatedButton(
                onPressed: () {
                  _battery.isInBatterySaveMode.then(
                    (isInPowerSaveMode) {
                      showDialog<void>(
                        context: context,
                        builder: (_) => AlertDialog(
                          content:
                              Text('Is on low power mode: $isInPowerSaveMode'),
                          actions: <Widget>[
                            TextButton(
                              onPressed: () {
                                Navigator.pop(context);
                              },
                              child: const Text('OK'),
                            )
                          ],
                        ),
                      );
                    },
                  );
                },
                child: const Text('Is on low power mode'))
          ],
        ),
      ),
    );
  }

  @override
  void dispose() {
    super.dispose();
    if (_batteryStateSubscription != null) {
      _batteryStateSubscription!.cancel();
    }
  }
}