feat: 集成健康数据功能优化

- 在 app.json 中添加 react-native-health 的配置以启用健康 API
- 在 Explore 页面中重构健康数据加载逻辑，增加加载状态提示
- 更新健康数据获取函数，增强错误处理和日志输出
- 修改 iOS 权限设置，确保健康数据访问权限的正确配置
- 更新 Info.plist 中的健康数据使用说明

utils/health.ts

@@ -1,4 +1,5 @@
-import AppleHealthKit, { HealthKitPermissions } from 'react-native-health';
+import type { HealthKitPermissions } from 'react-native-health';
+import AppleHealthKit from 'react-native-health';
 
 const PERMISSIONS: HealthKitPermissions = {
   permissions: {
@@ -17,37 +18,66 @@ export type TodayHealthData = {
 
 export async function ensureHealthPermissions(): Promise<boolean> {
   return new Promise((resolve) => {
+    console.log('开始初始化HealthKit...');
+
     AppleHealthKit.initHealthKit(PERMISSIONS, (error) => {
       if (error) {
-        console.warn('HealthKit init failed', error);
+        console.error('HealthKit初始化失败:', error);
+        // 常见错误处理
+        if (typeof error === 'string') {
+          if (error.includes('not available')) {
+            console.warn('HealthKit不可用 - 可能在模拟器上运行或非iOS设备');
+          }
+        }
         resolve(false);
         return;
       }
-      console.log('HealthKit init success');
+      console.log('HealthKit初始化成功');
       resolve(true);
     });
   });
 }
 
 export async function fetchTodayHealthData(): Promise<TodayHealthData> {
+  console.log('开始获取今日健康数据...');
+
   const start = new Date();
   start.setHours(0, 0, 0, 0);
   const options = { startDate: start.toISOString() } as any;
 
+  console.log('查询选项:', options);
+
   const steps = await new Promise<number>((resolve) => {
     AppleHealthKit.getStepCount(options, (err, res) => {
-      if (err || !res) return resolve(0);
+      if (err) {
+        console.error('获取步数失败:', err);
+        return resolve(0);
+      }
+      if (!res) {
+        console.warn('步数数据为空');
+        return resolve(0);
+      }
+      console.log('步数数据:', res);
       resolve(res.value || 0);
     });
   });
 
   const calories = await new Promise<number>((resolve) => {
     AppleHealthKit.getActiveEnergyBurned(options, (err, res) => {
-      if (err || !res) return resolve(0);
+      if (err) {
+        console.error('获取消耗卡路里失败:', err);
+        return resolve(0);
+      }
+      if (!res || !Array.isArray(res) || res.length === 0) {
+        console.warn('卡路里数据为空或格式错误');
+        return resolve(0);
+      }
+      console.log('卡路里数据:', res);
       // library returns value as number in kilocalories
-      resolve(res[0].value || 0);
+      resolve(res[0]?.value || 0);
     });
   });
 
+  console.log('今日健康数据获取完成:', { steps, calories });
   return { steps, activeEnergyBurned: calories };
 }