holding 0.0.1

holding: ^0.0.1 copied to clipboard

example/lib/main.dart

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

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

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

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  final _holding = Holding();

  HoldingHandStatus _holdingStatus = HoldingHandStatus.none;
  bool _isHoldingSubscribed = false;
  final List<String> _holdingLog = [];

  void _subscribeHoldingHand() {
    _holding.subscribeHoldingHand(
      SubscribeHoldingHandOptions(
        onChange: (HoldingHandStatus status) {
          if (!mounted) return;
          setState(() {
            _holdingStatus = status;
            _holdingLog.insert(
              0,
              '${DateTime.now().toString().substring(11, 19)} ${_holdingLabel(status)}',
            );
            if (_holdingLog.length > 20) _holdingLog.removeLast();
          });
        },
        success: () {
          if (!mounted) return;
          setState(() => _isHoldingSubscribed = true);
        },
        fail: (String msg) {
          if (!mounted) return;
          setState(() => _isHoldingSubscribed = false);
          ScaffoldMessenger.of(
            context,
          ).showSnackBar(SnackBar(content: Text('握持手订阅失败: $msg')));
        },
      ),
    );
  }

  void _unsubscribeHoldingHand() {
    _holding.unsubscribeHoldingHand(
      UnsubscribeHoldingHandOptions(
        success: () {
          if (!mounted) return;
          setState(() => _isHoldingSubscribed = false);
        },
        fail: (String msg) {
          if (!mounted) return;
          ScaffoldMessenger.of(
            context,
          ).showSnackBar(SnackBar(content: Text('握持手取消订阅失败: $msg')));
        },
      ),
    );
  }

  String _holdingLabel(HoldingHandStatus s) {
    switch (s) {
      case HoldingHandStatus.none:
        return '未握持';
      case HoldingHandStatus.left:
        return '左手握持';
      case HoldingHandStatus.right:
        return '右手握持';
      case HoldingHandStatus.both:
        return '双手握持';
      case HoldingHandStatus.unknown:
        return '未识别';
    }
  }

  Widget _buildStatusCard({
    required String title,
    required String statusText,
    required bool isSubscribed,
  }) {
    return Card(
      child: Padding(
        padding: const EdgeInsets.all(16),
        child: Row(
          children: [
            Icon(
              isSubscribed ? Icons.check_circle : Icons.radio_button_unchecked,
              color: isSubscribed ? Colors.green : Colors.grey,
              size: 28,
            ),
            const SizedBox(width: 12),
            Expanded(
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text(
                    title,
                    style: const TextStyle(fontSize: 12, color: Colors.grey),
                  ),
                  const SizedBox(height: 2),
                  Text(
                    statusText,
                    style: Theme.of(context).textTheme.titleLarge,
                  ),
                  Text(
                    isSubscribed ? '已订阅' : '未订阅',
                    style: TextStyle(color: Colors.grey[600], fontSize: 12),
                  ),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }

  Widget _buildLogCard(List<String> log) {
    if (log.isEmpty) return const SizedBox.shrink();
    return Card(
      child: ConstrainedBox(
        constraints: const BoxConstraints(maxHeight: 160),
        child: ListView.builder(
          shrinkWrap: true,
          itemCount: log.length,
          itemBuilder: (_, i) => Padding(
            padding: const EdgeInsets.symmetric(vertical: 3, horizontal: 12),
            child: Text(
              log[i],
              style: const TextStyle(fontFamily: 'monospace', fontSize: 12),
            ),
          ),
        ),
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: const Text('Holding 插件示例')),
        body: SingleChildScrollView(
          padding: const EdgeInsets.all(16),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: [
              const SizedBox(height: 16),
              const Text(
                '握持手状态',
                style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold),
              ),
              const SizedBox(height: 8),
              _buildStatusCard(
                title: '握持手',
                statusText: _holdingLabel(_holdingStatus),
                isSubscribed: _isHoldingSubscribed,
              ),
              const SizedBox(height: 8),
              Row(
                children: [
                  Expanded(
                    child: FilledButton.icon(
                      onPressed: _isHoldingSubscribed
                          ? null
                          : _subscribeHoldingHand,
                      icon: const Icon(Icons.play_arrow),
                      label: const Text('订阅'),
                    ),
                  ),
                  const SizedBox(width: 12),
                  Expanded(
                    child: OutlinedButton.icon(
                      onPressed: _isHoldingSubscribed
                          ? _unsubscribeHoldingHand
                          : null,
                      icon: const Icon(Icons.stop),
                      label: const Text('取消'),
                    ),
                  ),
                ],
              ),
              if (_holdingLog.isNotEmpty) ...[
                const SizedBox(height: 8),
                _buildLogCard(_holdingLog),
              ],
            ],
          ),
        ),
      ),
    );
  }
}