3964cf2bcb
- 新增 AppColors 配色体系（紫蓝渐变 + 超大圆角 + 漂浮卡片） - 新增 OmronBleService（BLE 扫描/连接/SFLOAT 协议解析） - 新增 BpReading 数据模型 + 血压数据自动同步后端 - 新增 DeviceScanPage（血压计扫描绑定页）+ DeviceBindPage（已绑定管理页） - 侧边栏新增"蓝牙设备"入口，ProfilePage 移除设备管理 - Android/iOS BLE 权限配置（BLUETOOTH_SCAN/CONNECT） - AppTheme 升级：新阴影系统、新语义色、圆角放大
217 lines
8.7 KiB
Dart
217 lines
8.7 KiB
Dart
import 'dart:async';
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import 'package:flutter/material.dart';
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import 'package:flutter_blue_plus/flutter_blue_plus.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:permission_handler/permission_handler.dart';
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import '../../core/app_colors.dart';
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import '../../providers/auth_provider.dart';
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import '../../providers/omron_device_provider.dart';
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import '../../services/omron_ble_service.dart';
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class DeviceScanPage extends ConsumerStatefulWidget {
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const DeviceScanPage({super.key});
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@override ConsumerState<DeviceScanPage> createState() => _DeviceScanPageState();
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}
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class _DeviceScanPageState extends ConsumerState<DeviceScanPage> {
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final _results = <ScanResult>[];
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bool _scanning = false;
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String? _connectingId;
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StreamSubscription? _scanSub;
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@override void initState() {
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super.initState();
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// 一次性订阅，持续整个页面生命周期
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_scanSub = FlutterBluePlus.scanResults.listen((list) {
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if (!mounted) return;
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setState(() { _results.clear(); _results.addAll(list); });
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});
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_start();
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}
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@override void dispose() {
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_scanSub?.cancel();
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FlutterBluePlus.stopScan();
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super.dispose();
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}
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Future<void> _start() async {
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setState(() => _scanning = true);
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await [Permission.bluetoothScan, Permission.bluetoothConnect].request();
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try { await FlutterBluePlus.turnOn(); } catch (_) {}
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try { await FlutterBluePlus.stopScan(); } catch (_) {}
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await FlutterBluePlus.startScan(
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timeout: const Duration(seconds: 30),
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androidScanMode: AndroidScanMode.lowLatency,
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);
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Future.delayed(const Duration(seconds: 30), () {
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FlutterBluePlus.stopScan();
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if (mounted) setState(() => _scanning = false);
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});
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}
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Future<void> _connect(ScanResult r) async {
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setState(() => _connectingId = r.device.remoteId.toString());
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FlutterBluePlus.stopScan();
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try {
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final ble = ref.read(omronBleServiceProvider);
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await ble.connect(r.device);
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final name = r.advertisementData.localName.isNotEmpty
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? r.advertisementData.localName
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: (r.device.platformName.isNotEmpty ? r.device.platformName : '血压计');
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await ref.read(omronDeviceProvider.notifier).bind(r.device.remoteId.toString(), name);
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ble.readings.listen((reading) async {
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try {
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final api = ref.read(apiClientProvider);
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await api.post('/api/health-records', data: reading.toHealthRecord());
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await ref.read(omronDeviceProvider.notifier).onReading(reading);
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} catch (_) {}
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});
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if (mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text('已连接 $name'), backgroundColor: AppColors.success),
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);
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Navigator.pop(context);
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}
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} catch (_) {
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if (mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text('连接失败，请重试'), backgroundColor: AppColors.error),
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);
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_start();
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}
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} finally {
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if (mounted) setState(() => _connectingId = null);
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}
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}
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// ═══════════════════ UI ═══════════════════
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@override Widget build(BuildContext context) {
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return Scaffold(
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backgroundColor: AppColors.background,
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appBar: AppBar(backgroundColor: AppColors.cardBackground, title: const Text('添加血压计')),
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body: Column(children: [
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Container(
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width: double.infinity, padding: const EdgeInsets.all(16),
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color: AppColors.iconBackground,
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child: Row(children: [
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if (_scanning) ...[
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const SizedBox(width: 16, height: 16, child: CircularProgressIndicator(strokeWidth: 2, color: Color(0xFF5B8DEF))),
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const SizedBox(width: 12),
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],
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Text(_scanning ? '正在扫描...' : '发现 ${_results.length} 台设备',
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style: const TextStyle(fontSize: 15, color: Color(0xFF666666))),
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]),
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),
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if (!_scanning && _results.isEmpty) _buildEmpty(),
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Expanded(
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child: ListView.builder(
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padding: const EdgeInsets.symmetric(vertical: 8),
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itemCount: _results.length,
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itemBuilder: (_, i) => _buildTile(_results[i]),
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),
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),
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if (!_scanning)
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Padding(
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padding: const EdgeInsets.all(16),
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child: SizedBox(width: double.infinity, child: OutlinedButton.icon(
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onPressed: _start,
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icon: const Icon(Icons.refresh),
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label: const Text('重新扫描'),
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style: OutlinedButton.styleFrom(
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foregroundColor: AppColors.iconColor,
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side: const BorderSide(color: Color(0xFF5B8DEF)),
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shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(14)),
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padding: const EdgeInsets.symmetric(vertical: 14),
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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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Widget _buildTile(ScanResult r) {
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final isBP = OmronBleService.isBpDevice(r);
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final name = r.advertisementData.localName.isNotEmpty
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? r.advertisementData.localName
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: (r.device.platformName.isNotEmpty ? r.device.platformName : '未知设备');
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final isConnecting = _connectingId == r.device.remoteId.toString();
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return Container(
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margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
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padding: const EdgeInsets.all(14),
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decoration: BoxDecoration(
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color: AppColors.cardBackground, borderRadius: BorderRadius.circular(16),
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boxShadow: AppColors.cardShadow,
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border: isBP ? Border.all(color: AppColors.iconColor, width: 1.5) : null,
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),
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child: Row(children: [
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Container(
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width: 44, height: 44,
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decoration: BoxDecoration(color: isBP ? AppColors.iconBackground : AppColors.backgroundSecondary, borderRadius: BorderRadius.circular(12)),
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child: Icon(Icons.bluetooth, size: 24, color: isBP ? AppColors.iconColor : AppColors.textHint),
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),
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const SizedBox(width: 12),
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Expanded(
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child: Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
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Row(children: [
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Flexible(child: Text(name, style: const TextStyle(fontSize: 17, fontWeight: FontWeight.w600, color: AppColors.textPrimary))),
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if (isBP) ...[
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const SizedBox(width: 6),
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Container(padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 2), decoration: BoxDecoration(color: AppColors.iconColor, borderRadius: BorderRadius.circular(4)), child: const Text('血压计', style: TextStyle(fontSize: 11, color: Colors.white))),
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],
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]),
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const SizedBox(height: 2),
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Text('信号: ${_rssiLabel(r.rssi)} · ${r.device.remoteId}', style: const TextStyle(fontSize: 13, color: AppColors.textHint)),
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]),
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),
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if (isConnecting)
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const SizedBox(width: 24, height: 24, child: CircularProgressIndicator(strokeWidth: 2, color: Color(0xFF5B8DEF)))
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else
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GestureDetector(
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onTap: () => _connect(r),
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child: Container(padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8), decoration: BoxDecoration(gradient: AppColors.purpleBlueGradient, borderRadius: BorderRadius.circular(12)), child: const Text('连接', style: TextStyle(fontSize: 15, fontWeight: FontWeight.w600, color: Colors.white))),
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),
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]),
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);
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}
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Widget _buildEmpty() => Padding(
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padding: const EdgeInsets.all(32),
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child: Column(children: [
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Icon(Icons.bluetooth_disabled, size: 64, color: AppColors.textHint),
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const SizedBox(height: 16),
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const Text('未发现设备', style: TextStyle(fontSize: 18, fontWeight: FontWeight.w500, color: AppColors.textPrimary)),
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const SizedBox(height: 24),
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_tip('1', '确保血压计已装电池'),
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_tip('2', '长按血压计蓝牙键 3 秒直到图标闪烁'),
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_tip('3', '手机靠近血压计（1米内）'),
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_tip('4', '打开手机蓝牙'),
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]),
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);
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Widget _tip(String num, String text) => Padding(
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padding: const EdgeInsets.only(bottom: 8),
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child: Row(crossAxisAlignment: CrossAxisAlignment.start, children: [
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Container(width: 20, height: 20, alignment: Alignment.center, decoration: BoxDecoration(color: AppColors.iconColor, borderRadius: BorderRadius.circular(10)), child: Text(num, style: const TextStyle(color: Colors.white, fontSize: 12, fontWeight: FontWeight.w600))),
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const SizedBox(width: 10),
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Expanded(child: Text(text, style: TextStyle(fontSize: 14, color: AppColors.textSecondary))),
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]),
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);
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String _rssiLabel(int rssi) {
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if (rssi > -55) return '强';
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if (rssi > -70) return '中';
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return '弱';
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}
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}
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