Mudança na tela bluetooth
This commit is contained in:
@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
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import 'package:flutter_blue_plus/flutter_blue_plus.dart';
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import 'package:permission_handler/permission_handler.dart';
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import 'dart:async';
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import 'constants/app_colors.dart';
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class BluetoothScreen extends StatefulWidget {
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const BluetoothScreen({super.key});
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@@ -20,14 +21,27 @@ class _BluetoothScreenState extends State<BluetoothScreen> {
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void initState() {
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super.initState();
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// Ouvir os resultados da busca e ordenar
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_scanResultsSubscription = FlutterBluePlus.scanResults.listen((results) {
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if (mounted) {
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// Criar uma cópia da lista e ordenar
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List<ScanResult> sortedResults = List.from(results);
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sortedResults.sort((a, b) {
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bool aHasName = _hasRealName(a);
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bool bHasName = _hasRealName(b);
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if (aHasName && !bHasName) return -1; // 'a' vem primeiro
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if (!aHasName && bHasName) return 1; // 'b' vem primeiro
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return 0; // Mantém a ordem original entre iguais
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});
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setState(() {
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_scanResults = results;
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_scanResults = sortedResults;
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});
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}
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});
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// Ouvir o estado da busca
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_isScanningSubscription = FlutterBluePlus.isScanning.listen((state) {
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if (mounted) {
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setState(() {
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@@ -37,6 +51,11 @@ class _BluetoothScreenState extends State<BluetoothScreen> {
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});
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}
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// Função auxiliar para verificar se tem nome real
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bool _hasRealName(ScanResult r) {
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return r.advertisementData.advName.isNotEmpty || r.device.platformName.isNotEmpty;
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}
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@override
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void dispose() {
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_scanResultsSubscription?.cancel();
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@@ -45,7 +64,6 @@ class _BluetoothScreenState extends State<BluetoothScreen> {
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}
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Future<void> startScan() async {
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// 1. Pedir permissões
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Map<Permission, PermissionStatus> statuses = await [
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Permission.bluetoothScan,
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Permission.bluetoothConnect,
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@@ -56,15 +74,16 @@ class _BluetoothScreenState extends State<BluetoothScreen> {
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statuses[Permission.bluetoothConnect]!.isGranted) {
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try {
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// 2. Iniciar Scan
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_scanResults.clear();
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await FlutterBluePlus.startScan(
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timeout: const Duration(seconds: 15),
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androidUsesFineLocation: true,
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continuousUpdates: true,
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);
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// Se não encontrar nada (ex: no emulador), avisa o usuário
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Future.delayed(const Duration(seconds: 5), () {
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Future.delayed(const Duration(seconds: 8), () {
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if (mounted && _scanResults.isEmpty && _isScanning) {
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_showSnackBar("Nenhum dispositivo encontrado (Verifique se o Bluetooth/GPS estão ligados)", Colors.orange);
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_showSnackBar("Nenhum dispositivo encontrado.", AppColors.coral);
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}
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});
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@@ -72,14 +91,22 @@ class _BluetoothScreenState extends State<BluetoothScreen> {
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_showSnackBar("Erro ao iniciar busca: $e", Colors.red);
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}
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} else {
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_showSnackBar("Permissões de Bluetooth negadas", Colors.orange);
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_showSnackBar("Permissões negadas.", AppColors.coral);
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}
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}
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Future<void> stopScan() async {
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try {
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await FlutterBluePlus.stopScan();
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} catch (e) {
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_showSnackBar("Erro ao parar busca: $e", Colors.red);
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}
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}
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Future<void> connectToDevice(BluetoothDevice device) async {
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try {
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String name = device.platformName.isEmpty ? 'Dispositivo' : device.platformName;
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_showSnackBar("Conectando a $name...", Colors.blue);
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String name = device.platformName.isNotEmpty ? device.platformName : "Dispositivo";
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_showSnackBar("Conectando a $name...", Colors.white70);
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await device.connect();
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_showSnackBar("Conectado com sucesso!", Colors.green);
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} catch (e) {
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@@ -87,6 +114,18 @@ class _BluetoothScreenState extends State<BluetoothScreen> {
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}
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}
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// Lógica para capturar o nome
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String _getDeviceName(ScanResult r) {
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if (r.advertisementData.advName.isNotEmpty) {
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return r.advertisementData.advName;
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} else if (r.device.platformName.isNotEmpty) {
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return r.device.platformName;
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} else {
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String id = r.device.remoteId.toString();
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return "Disp. [${id.length > 5 ? id.substring(id.length - 5) : id}]";
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}
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}
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void _showSnackBar(String message, Color color) {
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if (!mounted) return;
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ScaffoldMessenger.of(context).showSnackBar(
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@@ -94,6 +133,7 @@ class _BluetoothScreenState extends State<BluetoothScreen> {
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content: Text(message),
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backgroundColor: color,
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duration: const Duration(seconds: 3),
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behavior: SnackBarBehavior.floating,
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),
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);
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}
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@@ -102,81 +142,197 @@ class _BluetoothScreenState extends State<BluetoothScreen> {
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: const Text('Conexão Bluetooth'),
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backgroundColor: Colors.black87,
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foregroundColor: Colors.white,
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title: const Text('Bluetooth', style: TextStyle(fontWeight: FontWeight.bold)),
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centerTitle: true,
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backgroundColor: Colors.transparent,
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elevation: 0,
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foregroundColor: AppColors.white,
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),
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backgroundColor: Colors.grey[900],
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body: Column(
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children: [
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const SizedBox(height: 20),
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Center(
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child: Column(
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children: [
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const Icon(Icons.bluetooth, size: 80, color: Colors.blue),
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const SizedBox(height: 10),
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ElevatedButton.icon(
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onPressed: _isScanning ? null : startScan,
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icon: _isScanning
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? const SizedBox(
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width: 18,
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height: 18,
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child: CircularProgressIndicator(strokeWidth: 2, color: Colors.black),
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)
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: const Icon(Icons.search),
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label: Text(_isScanning ? 'Buscando...' : 'Procurar Dispositivos'),
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style: ElevatedButton.styleFrom(
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backgroundColor: Colors.white,
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foregroundColor: Colors.black,
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padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 12),
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),
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),
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],
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),
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extendBodyBehindAppBar: true,
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backgroundColor: AppColors.background,
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body: Container(
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decoration: BoxDecoration(
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gradient: LinearGradient(
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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colors: [
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AppColors.coral.withOpacity(0.1),
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AppColors.background,
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],
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),
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const SizedBox(height: 20),
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Expanded(
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child: _scanResults.isEmpty && !_isScanning
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? const Center(
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child: Text(
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"Clique em Procurar para encontrar dispositivos.\n(Nota: Requer telemóvel físico para Bluetooth real)",
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textAlign: TextAlign.center,
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style: TextStyle(color: Colors.white54),
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),
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child: Column(
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children: [
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const SizedBox(height: 100),
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Center(
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child: Column(
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children: [
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Container(
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padding: const EdgeInsets.all(25),
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decoration: BoxDecoration(
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shape: BoxShape.circle,
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color: _isScanning
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? AppColors.coral.withOpacity(0.1)
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: AppColors.backgroundGrey.withOpacity(0.3),
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border: Border.all(
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color: _isScanning ? AppColors.coral : AppColors.backgroundGrey,
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width: 2,
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),
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),
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)
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: ListView.builder(
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itemCount: _scanResults.length,
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itemBuilder: (context, index) {
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final r = _scanResults[index];
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final name = r.device.platformName.isEmpty
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? "Dispositivo Desconhecido"
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: r.device.platformName;
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return Card(
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margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 6),
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color: Colors.white10,
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child: ListTile(
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leading: const Icon(Icons.bluetooth, color: Colors.blue),
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title: Text(
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name,
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child: Icon(
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_isScanning ? Icons.bluetooth_searching : Icons.bluetooth,
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size: 60,
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color: _isScanning ? AppColors.coral : AppColors.white.withOpacity(0.7),
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),
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),
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const SizedBox(height: 30),
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SizedBox(
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width: 220,
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height: 50,
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child: ElevatedButton(
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onPressed: _isScanning ? stopScan : startScan,
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style: ElevatedButton.styleFrom(
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backgroundColor: _isScanning ? AppColors.backgroundGrey : AppColors.white,
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foregroundColor: _isScanning ? AppColors.white : AppColors.background,
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(25),
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),
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elevation: 0,
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),
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child: Row(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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if (_isScanning)
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const Padding(
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padding: EdgeInsets.only(right: 10),
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child: SizedBox(
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width: 18,
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height: 18,
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child: CircularProgressIndicator(
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strokeWidth: 2,
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color: AppColors.white,
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),
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),
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),
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Text(
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_isScanning ? 'PARAR BUSCA' : 'BUSCAR AGORA',
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style: const TextStyle(
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color: Colors.white,
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fontSize: 14,
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fontWeight: FontWeight.bold,
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letterSpacing: 1.2,
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),
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),
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subtitle: Text(
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r.device.remoteId.toString(),
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style: const TextStyle(color: Colors.white70),
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),
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trailing: ElevatedButton(
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onPressed: () => connectToDevice(r.device),
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child: const Text("Conectar"),
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),
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),
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);
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},
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],
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),
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),
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),
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),
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],
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],
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),
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),
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const SizedBox(height: 40),
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Padding(
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padding: const EdgeInsets.symmetric(horizontal: 24),
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child: Row(
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children: [
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Text(
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_isScanning ? "Procurando..." : "Dispositivos próximos",
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style: const TextStyle(
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color: AppColors.white,
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fontSize: 14,
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fontWeight: FontWeight.w500,
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),
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),
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const Spacer(),
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if (_isScanning)
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Container(
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padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
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decoration: BoxDecoration(
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color: AppColors.coral.withOpacity(0.2),
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borderRadius: BorderRadius.circular(10),
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),
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child: const Text(
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"ATIVO",
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style: TextStyle(color: AppColors.coral, fontSize: 10, fontWeight: FontWeight.bold),
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),
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),
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],
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),
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),
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const SizedBox(height: 15),
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Expanded(
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child: _scanResults.isEmpty && !_isScanning
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? Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Icon(Icons.bluetooth_disabled, size: 40, color: AppColors.white.withOpacity(0.1)),
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const SizedBox(height: 16),
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Text(
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"Inicie a busca para conectar",
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style: TextStyle(color: AppColors.white.withOpacity(0.3)),
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),
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],
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),
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)
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: ListView.builder(
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padding: const EdgeInsets.only(top: 0, bottom: 20),
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itemCount: _scanResults.length,
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itemBuilder: (context, index) {
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final r = _scanResults[index];
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final name = _getDeviceName(r);
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final isUnknown = name.startsWith("Disp. [");
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return Container(
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margin: const EdgeInsets.symmetric(horizontal: 20, vertical: 6),
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decoration: BoxDecoration(
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color: AppColors.backgroundGrey.withOpacity(0.2),
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borderRadius: BorderRadius.circular(15),
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),
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child: ListTile(
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contentPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
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leading: CircleAvatar(
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backgroundColor: AppColors.backgroundGrey.withOpacity(0.3),
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child: Icon(
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isUnknown ? Icons.devices_other : Icons.bluetooth,
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color: isUnknown ? AppColors.white.withOpacity(0.4) : AppColors.white,
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size: 20
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),
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),
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title: Text(
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name,
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style: TextStyle(
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color: isUnknown ? AppColors.white.withOpacity(0.5) : AppColors.white,
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fontWeight: FontWeight.w600,
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fontSize: 15,
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),
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),
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subtitle: Text(
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r.device.remoteId.toString(),
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style: TextStyle(color: AppColors.white.withOpacity(0.3), fontSize: 11),
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),
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trailing: ElevatedButton(
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onPressed: () => connectToDevice(r.device),
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style: ElevatedButton.styleFrom(
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backgroundColor: AppColors.coral,
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foregroundColor: AppColors.white,
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padding: const EdgeInsets.symmetric(horizontal: 12),
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shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(10)),
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elevation: 0,
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),
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child: const Text("CONECTAR", style: TextStyle(fontSize: 11, fontWeight: FontWeight.bold)),
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),
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),
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);
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},
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),
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),
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],
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),
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),
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);
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}
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Reference in New Issue
Block a user