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adição e conexao das telas que faltavam

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240403
2026-03-12 14:29:55 +00:00
parent 6931d6ada2
commit f180f6ff36
3 changed files with 680 additions and 7 deletions
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411
lib/screens/bluethoot_cpnnection_screen.dart
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import 'dart:async';
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter_blue_plus/flutter_blue_plus.dart';
import 'package:permission_handler/permission_handler.dart';
import '../constants/app_colors.dart';
import '../constants/app_strings.dart';
class BluetoothConnectionScreen extends StatefulWidget {
const BluetoothConnectionScreen({super.key});
@override
State<BluetoothConnectionScreen> createState() => _BluetoothConnectionScreenState();
}
class _BluetoothConnectionScreenState extends State<BluetoothConnectionScreen> {
List<ScanResult> _scanResults = [];
bool _isScanning = false;
BluetoothDevice? _connectedDevice;
late StreamSubscription<List<ScanResult>> _scanResultsSubscription;
late StreamSubscription<bool> _isScanningSubscription;
@override
void initState() {
super.initState();
_scanResultsSubscription = FlutterBluePlus.scanResults.listen((results) {
if (mounted) {
setState(() {
// Filtra os dispositivos para mostrar apenas aqueles que possuem um nome identificado
_scanResults = results.where((r) => r.device.platformName.isNotEmpty).toList();
});
}
});
_isScanningSubscription = FlutterBluePlus.isScanning.listen((state) {
if (mounted) {
setState(() {
_isScanning = state;
});
}
});
}
@override
void dispose() {
_scanResultsSubscription.cancel();
_isScanningSubscription.cancel();
super.dispose();
}
Future<void> _requestPermissionsAndStartScan() async {
if (Platform.isAndroid) {
Map<Permission, PermissionStatus> statuses = await [
Permission.bluetoothScan,
Permission.bluetoothConnect,
Permission.bluetoothAdvertise,
Permission.location,
].request();
bool allGranted = true;
if (statuses[Permission.bluetoothScan]?.isDenied ?? true) allGranted = false;
if (statuses[Permission.bluetoothConnect]?.isDenied ?? true) allGranted = false;
final bool scanPermanentlyDenied = statuses[Permission.bluetoothScan]?.isPermanentlyDenied ?? false;
final bool connectPermanentlyDenied = statuses[Permission.bluetoothConnect]?.isPermanentlyDenied ?? false;
if (scanPermanentlyDenied || connectPermanentlyDenied) {
if (mounted) {
_showSettingsDialog();
}
return;
}
if (allGranted) {
_startScan();
} else {
if (mounted) {
ScaffoldMessenger.of(context).showSnackBar(
const SnackBar(
content: Text(AppStrings.permissionsDenied),
behavior: SnackBarBehavior.floating,
),
);
}
}
} else {
_startScan();
}
}
void _showSettingsDialog() {
showDialog(
context: context,
builder: (context) => AlertDialog(
title: const Text("Permissões Necessárias"),
content: const Text("As permissões de Bluetooth foram negadas permanentemente. Por favor, habilite-as nas configurações do sistema para continuar."),
actions: [
TextButton(
onPressed: () => Navigator.pop(context),
child: const Text("CANCELAR"),
),
TextButton(
onPressed: () {
openAppSettings();
Navigator.pop(context);
},
child: const Text("CONFIGURAÇÕES"),
),
],
),
);
}
Future<void> _startScan() async {
try {
if (await FlutterBluePlus.adapterState.first != BluetoothAdapterState.on) {
if (mounted) {
ScaffoldMessenger.of(context).showSnackBar(
const SnackBar(
content: Text(AppStrings.turnOnBluetooth),
behavior: SnackBarBehavior.floating,
),
);
}
return;
}
await FlutterBluePlus.startScan(
timeout: const Duration(seconds: 15),
);
} catch (e) {
if (mounted) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text('${AppStrings.scanError}$e'),
behavior: SnackBarBehavior.floating,
),
);
}
}
}
Future<void> _stopScan() async {
try {
await FlutterBluePlus.stopScan();
} catch (e) {
if (mounted) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text('${AppStrings.stopScanError}$e'),
behavior: SnackBarBehavior.floating,
),
);
}
}
}
Future<void> _connectToDevice(BluetoothDevice device) async {
try {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text('${AppStrings.connectingTo}${device.platformName.isEmpty ? AppStrings.unknownDevice : device.platformName}...'),
duration: const Duration(seconds: 2),
behavior: SnackBarBehavior.floating,
),
);
await device.connect();
if (mounted) {
setState(() {
_connectedDevice = device;
_isScanning = false;
});
FlutterBluePlus.stopScan();
ScaffoldMessenger.of(context).showSnackBar(
const SnackBar(
content: Text(AppStrings.connectedSuccess),
backgroundColor: AppColors.success,
behavior: SnackBarBehavior.floating,
),
);
}
} catch (e) {
if (mounted) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text('${AppStrings.connectFail}$e'),
backgroundColor: AppColors.error,
behavior: SnackBarBehavior.floating,
),
);
}
}
}
Future<void> _disconnectDevice() async {
if (_connectedDevice != null) {
await _connectedDevice!.disconnect();
setState(() {
_connectedDevice = null;
});
}
}
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: AppColors.background,
appBar: AppBar(
title: const Text(
AppStrings.bluetoothTitle,
style: TextStyle(
fontWeight: FontWeight.w900,
letterSpacing: 2,
color: Colors.white,
),
),
centerTitle: true,
backgroundColor: Colors.transparent,
elevation: 0,
leading: IconButton(
icon: const Icon(Icons.arrow_back_ios_new, color: Colors.white, size: 20),
onPressed: () => Navigator.pop(context),
),
),
body: Stack(
children: [
Column(
children: [
const SizedBox(height: 20),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 25),
child: Container(
padding: const EdgeInsets.all(25),
decoration: BoxDecoration(
color: AppColors.backgroundGrey,
borderRadius: BorderRadius.circular(30),
border: Border.all(color: Colors.white.withValues(alpha: 0.05)),
boxShadow: [
BoxShadow(
color: Colors.black.withValues(alpha: 0.3),
blurRadius: 20,
offset: const Offset(0, 10),
),
],
),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
_connectedDevice != null
? AppStrings.statusConnected
: (_isScanning ? AppStrings.searching : AppStrings.statusReady),
style: TextStyle(
color: _connectedDevice != null ? Colors.greenAccent : (_isScanning ? AppColors.coral : Colors.white54),
fontSize: 10,
fontWeight: FontWeight.w900,
letterSpacing: 1,
),
),
const SizedBox(height: 8),
Text(
_connectedDevice != null
? AppStrings.oneDevice
: '${_scanResults.length} ${AppStrings.foundDevices}',
style: const TextStyle(
color: Colors.white,
fontSize: 22,
fontWeight: FontWeight.w900,
),
),
],
),
if (_connectedDevice == null)
GestureDetector(
onTap: _isScanning ? _stopScan : _requestPermissionsAndStartScan,
child: Container(
padding: const EdgeInsets.all(15),
decoration: BoxDecoration(
color: _isScanning ? Colors.red.withValues(alpha: 0.1) : AppColors.coral.withValues(alpha: 0.1),
shape: BoxShape.circle,
border: Border.all(
color: _isScanning ? Colors.red.withValues(alpha: 0.5) : AppColors.coral.withValues(alpha: 0.5),
width: 2,
),
),
child: Icon(
_isScanning ? Icons.stop_rounded : Icons.search_rounded,
color: _isScanning ? Colors.red : AppColors.coral,
size: 28,
),
),
)
else
GestureDetector(
onTap: _disconnectDevice,
child: Container(
padding: const EdgeInsets.all(15),
decoration: BoxDecoration(
color: Colors.red.withValues(alpha: 0.1),
shape: BoxShape.circle,
border: Border.all(
color: Colors.red.withValues(alpha: 0.5),
width: 2,
),
),
child: const Icon(
Icons.close_rounded,
color: Colors.red,
size: 28,
),
),
),
],
),
),
),
const SizedBox(height: 30),
Expanded(
child: ListView.builder(
itemCount: _connectedDevice != null ? 1 : _scanResults.length,
padding: const EdgeInsets.symmetric(horizontal: 25),
physics: const BouncingScrollPhysics(),
itemBuilder: (context, index) {
final BluetoothDevice device = _connectedDevice ?? _scanResults[index].device;
final name = device.platformName.isEmpty ? AppStrings.unknownDevice : device.platformName;
return Padding(
padding: const EdgeInsets.only(bottom: 18),
child: Container(
padding: const EdgeInsets.all(20),
decoration: BoxDecoration(
color: AppColors.backgroundGrey.withValues(alpha: 0.4),
borderRadius: BorderRadius.circular(25),
border: Border.all(color: Colors.white.withValues(alpha: 0.03)),
),
child: Row(
children: [
Container(
padding: const EdgeInsets.all(12),
decoration: BoxDecoration(
color: AppColors.background.withValues(alpha: 0.8),
borderRadius: BorderRadius.circular(15),
),
child: Icon(
Icons.bluetooth_audio_rounded,
color: _connectedDevice != null ? Colors.greenAccent : AppColors.coral.withValues(alpha: 0.8),
size: 24
),
),
const SizedBox(width: 20),
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
name,
style: const TextStyle(
color: Colors.white,
fontSize: 16,
fontWeight: FontWeight.w900
),
),
const SizedBox(height: 4),
Text(
device.remoteId.toString(),
style: const TextStyle(
color: Colors.white38,
fontSize: 11,
fontWeight: FontWeight.bold
),
),
],
),
),
if (_connectedDevice == null)
GestureDetector(
onTap: () => _connectToDevice(device),
child: const Icon(Icons.add_link_rounded, color: Colors.white24),
)
else
const Icon(Icons.check_circle_rounded, color: Colors.greenAccent),
],
),
),
);
},
),
),
],
),
if (_isScanning)
const Positioned(
bottom: 0,
left: 0,
right: 0,
child: LinearProgressIndicator(
backgroundColor: Colors.transparent,
valueColor: AlwaysStoppedAnimation<Color>(AppColors.coral),
minHeight: 2,
),
),
],
),
);
}
}