一、原生集成概述

原生集成允许Flutter应用调用HarmonyOS原生API和第三方SDK，扩展应用能力。

|| 特性 | 说明 |
|------|------|
| 完整访问 | 访问所有系统API |
| SDK集成 | 集成第三方库 |
| 性能优化 | 原生代码执行 |
| 代码复用 | 复用原生代码 |

二、集成流程

class _Page05NativeIntegration extends StatefulWidget {
  const _Page05NativeIntegration();

  @override
  State<_Page05NativeIntegration> createState() => _Page05NativeIntegrationState();
}

class _Page05NativeIntegrationState extends State<_Page05NativeIntegration> {
  static const platform = MethodChannel('com.example.demo/native');
  String _deviceInfo = '未获取';
  bool _isLoading = false;

  Future<void> _getDeviceInfo() async {
    setState(() {
      _isLoading = true;
      _deviceInfo = '获取中...';
    });

    try {
      // 模拟获取设备信息
      await Future.delayed(const Duration(seconds: 1));
      final info = {
        '设备型号': 'HarmonyOS Device',
        '系统版本': '4.0',
        'API级别': '30',
        '制造商': 'Huawei',
      };
      if (mounted) {
        setState(() {
          _deviceInfo = info.entries.map((e) => '${e.key}: ${e.value}').join('\n');
          _isLoading = false;
        });
      }
    } catch (e) {
      if (mounted) {
        setState(() {
          _deviceInfo = '错误: $e';
          _isLoading = false;
        });
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    return Container(
      color: Colors.teal.shade50,
      padding: const EdgeInsets.all(20),
      child: Column(
        children: [
          Container(
            padding: const EdgeInsets.all(20),
            decoration: BoxDecoration(
              color: Colors.teal.shade600,
              borderRadius: BorderRadius.circular(20),
            ),
            child: const Column(
              children: [
                Icon(Icons.phone_android, size: 48, color: Colors.white),
                SizedBox(height: 16),
                Text(
                  '原生集成',
                  style: TextStyle(fontSize: 28, fontWeight: FontWeight.bold, color: Colors.white),
                ),
                SizedBox(height: 8),
                Text('Native Integration - 页面 5/10', style: TextStyle(color: Colors.white70)),
              ],
            ),
          ),
          const SizedBox(height: 24),
          Expanded(
            child: Container(
              padding: const EdgeInsets.all(20),
              decoration: BoxDecoration(color: Colors.white, borderRadius: BorderRadius.circular(20)),
              child: Column(
                children: [
                  Icon(
                    Icons.devices,
                    size: 80,
                    color: Colors.teal.shade600,
                  ),
                  const SizedBox(height: 20),
                  Container(
                    padding: const EdgeInsets.all(16),
                    decoration: BoxDecoration(
                      color: Colors.teal.shade100,
                      borderRadius: BorderRadius.circular(10),
                    ),
                    child: Text(
                      _deviceInfo,
                      style: const TextStyle(fontSize: 14, fontFamily: 'monospace'),
                    ),
                  ),
                  const Spacer(),
                  ElevatedButton(
                    onPressed: _isLoading ? null : _getDeviceInfo,
                    style: ElevatedButton.styleFrom(backgroundColor: Colors.teal.shade600),
                    child: _isLoading
                        ? const SizedBox(
                            width: 20,
                            height: 20,
                            child: CircularProgressIndicator(strokeWidth: 2, color: Colors.white),
                          )
                        : const Text('获取设备信息', style: TextStyle(color: Colors.white)),
                  ),
                ],
              ),
            ),
          ),
        ],
      ),
    );
  }
}

三、集成步骤

四、权限配置

五、常见API

六、最佳实践

• ✅ 合理申请权限
• ✅ 处理权限拒绝
• ✅ 优化NAPI性能
• ✅ 提供错误回退方案

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