battery_ffi 0.0.1

battery_ffi: ^0.0.1 copied to clipboard

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:shadcn_ui/shadcn_ui.dart';
import 'package:battery_ffi/battery_ffi.dart';
import 'widgets/streamable_battery_section.dart';
import 'widgets/non_streamable_battery_section.dart';
import 'widgets/wake_lock_control_section.dart';

void main() async {
  // Initialize the battery monitoring singleton
  await BatteryFFI.instance.initialize();

  runApp(const BatteryMonitorApp());
}

class BatteryMonitorApp extends StatelessWidget {
  const BatteryMonitorApp({super.key});

  @override
  Widget build(BuildContext context) {
    return ShadApp(
      title: 'Battery Monitor',
      home: const BatteryMonitorHomePage(),
    );
  }
}

class BatteryMonitorHomePage extends StatefulWidget {
  const BatteryMonitorHomePage({super.key});

  @override
  State<BatteryMonitorHomePage> createState() => _BatteryMonitorHomePageState();
}

class _BatteryMonitorHomePageState extends State<BatteryMonitorHomePage>
    with WidgetsBindingObserver {
  final BatteryFFI _battery = BatteryFFI.instance;

  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addObserver(this);
  }

  @override
  void dispose() {
    WidgetsBinding.instance.removeObserver(this);
    // Dispose of battery monitoring resources
    _battery.dispose();
    super.dispose();
  }

  @override
  void didChangeAppLifecycleState(AppLifecycleState state) {
    super.didChangeAppLifecycleState(state);

    // Dispose resources when app is detached/permanently closed
    if (state == AppLifecycleState.detached) {
      _battery.dispose();
    }
  }

  @override
  Widget build(BuildContext context) {
    return SafeArea(
      child: Scaffold(
        appBar: AppBar(title: const Text('Battery Monitor')),
        body: SingleChildScrollView(
          padding: const EdgeInsets.all(16),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              // Header Card
              ShadCard(
                child: Padding(
                  padding: const EdgeInsets.all(20),
                  child: Column(
                    children: [
                      Row(
                        mainAxisAlignment: MainAxisAlignment.center,
                        children: [
                          Icon(
                            Icons.battery_full,
                            size: 48,
                            color: Colors.green,
                          ),
                          const SizedBox(width: 16),
                          Text(
                            '${_battery.batteryLevel}%',
                            style: Theme.of(context).textTheme.displayLarge
                                ?.copyWith(
                                  color: Colors.green,
                                  fontWeight: FontWeight.bold,
                                ),
                          ),
                        ],
                      ),
                      const SizedBox(height: 16),
                      ShadProgress(
                        value: _battery.batteryLevel / 100,
                        minHeight: 8,
                      ),
                    ],
                  ),
                ),
              ),

              const SizedBox(height: 24),

              // Real-time Streamable Section
              Text(
                '🔄 Real-time Monitoring (Streamable)',
                style: Theme.of(context).textTheme.titleLarge?.copyWith(
                  fontWeight: FontWeight.bold,
                  color: Colors.blue,
                ),
              ),
              const SizedBox(height: 8),
              Text(
                'These values update automatically when battery conditions change',
                style: Theme.of(
                  context,
                ).textTheme.bodyMedium?.copyWith(color: Colors.blue.shade700),
              ),
              const SizedBox(height: 16),

              StreamableBatterySection(battery: _battery),

              const SizedBox(height: 32),

              // Current Status Section
              Text(
                '📊 Current Status (Non-streamable)',
                style: Theme.of(context).textTheme.titleLarge?.copyWith(
                  fontWeight: FontWeight.bold,
                  color: Colors.orange,
                ),
              ),
              const SizedBox(height: 8),
              Text(
                'These are the current values at the time of access',
                style: Theme.of(
                  context,
                ).textTheme.bodyMedium?.copyWith(color: Colors.orange.shade700),
              ),
              const SizedBox(height: 16),

              NonStreamableBatterySection(battery: _battery),

              const SizedBox(height: 32),

              // Wake Lock Control Section (Android only) - MOVED UP FOR PROMINENCE
              Container(
                padding: const EdgeInsets.all(16),
                decoration: BoxDecoration(
                  color: Colors.purple.shade50,
                  borderRadius: BorderRadius.circular(12),
                  border: Border.all(color: Colors.purple.shade200),
                ),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Row(
                      children: [
                        Icon(Icons.lock, color: Colors.purple.shade700),
                        const SizedBox(width: 8),
                        Expanded(
                          child: Text(
                            '🔋 Background Monitoring (Android Only)',
                            style: Theme.of(context).textTheme.titleLarge
                                ?.copyWith(
                                  fontWeight: FontWeight.bold,
                                  color: Colors.purple.shade800,
                                ),
                            overflow: TextOverflow.ellipsis,
                          ),
                        ),
                      ],
                    ),
                    const SizedBox(height: 8),
                    Text(
                      'Enable wake locks to receive battery updates even when the app is in background or screen is off.',
                      style: Theme.of(context).textTheme.bodyMedium?.copyWith(
                        color: Colors.purple.shade700,
                      ),
                    ),
                    const SizedBox(height: 16),
                    WakeLockControlSection(battery: _battery),
                  ],
                ),
              ),

              const SizedBox(height: 24),

              // Technical Details
              ShadCard(
                backgroundColor: ShadTheme.of(context).colorScheme.muted,
                child: Padding(
                  padding: const EdgeInsets.all(16),
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Text(
                        'Technical Details',
                        style: Theme.of(context).textTheme.titleLarge?.copyWith(
                          fontWeight: FontWeight.bold,
                        ),
                      ),
                      const SizedBox(height: 8),
                      Text(
                        'This app demonstrates JNI (Java Native Interface) integration with Flutter. '
                        'The battery information is retrieved directly from Android\'s system APIs using '
                        'compiled Java code that communicates with Dart through FFI bindings generated by JniGen.\n\n'
                        '🔄 Streamable properties provide real-time updates via BroadcastReceiver callbacks.\n'
                        '📊 Non-streamable properties return current values synchronously.\n'
                        '🔋 Wake locks enable continuous background monitoring (Android only).',
                        style: Theme.of(context).textTheme.bodyMedium?.copyWith(
                          color: ShadTheme.of(
                            context,
                          ).colorScheme.mutedForeground,
                        ),
                      ),
                    ],
                  ),
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}