feat: 添加用户推送通知偏好设置功能，支持开启/关闭推送通知

services/notifications.ts

@@ -1,3 +1,4 @@
+import { getNotificationEnabled } from '@/utils/userPreferences';
 import * as Notifications from 'expo-notifications';
 import { router } from 'expo-router';
 
@@ -180,6 +181,32 @@ export class NotificationService {
     }
   }
 
+  /**
+   * 检查用户是否允许推送通知
+   */
+  private async isNotificationAllowed(): Promise<boolean> {
+    try {
+      // 检查用户偏好设置中的推送开关
+      const userPreferenceEnabled = await getNotificationEnabled();
+      if (!userPreferenceEnabled) {
+        console.log('用户已在偏好设置中关闭推送通知');
+        return false;
+      }
+
+      // 检查系统权限
+      const permissionStatus = await this.getPermissionStatus();
+      if (permissionStatus !== 'granted') {
+        console.log('系统推送权限未授予');
+        return false;
+      }
+
+      return true;
+    } catch (error) {
+      console.error('检查推送权限失败:', error);
+      return false;
+    }
+  }
+
   /**
    * 发送本地推送通知
    */
@@ -188,6 +215,13 @@ export class NotificationService {
     trigger?: Notifications.NotificationTriggerInput
   ): Promise<string> {
     try {
+      // 检查用户是否允许推送通知
+      const isAllowed = await this.isNotificationAllowed();
+      if (!isAllowed) {
+        console.log('推送通知被用户偏好设置或系统权限阻止，跳过发送');
+        return 'blocked_by_user_preference';
+      }
+
       const notificationId = await Notifications.scheduleNotificationAsync({
         content: {
           title: notification.title,