diff --git a/app/src/main/java/com/sw/dualscreen/objbox/ObjectBox.kt b/app/src/main/java/com/sw/dualscreen/objbox/ObjectBox.kt
index 42454fe..2356681 100644
--- a/app/src/main/java/com/sw/dualscreen/objbox/ObjectBox.kt
+++ b/app/src/main/java/com/sw/dualscreen/objbox/ObjectBox.kt
@@ -143,6 +143,9 @@ object ObjectBox {
             } catch (e: Exception) {
                 e.printStackTrace()
                 null
+            } finally {
+                // 线程资源清理
+                boxStore?.closeThreadResources()
             }
         }
     }
@@ -177,16 +180,13 @@ object ObjectBox {
         getBox<Food>()?.all
     } ?: emptyList()
 
-    suspend fun filter(name: String?, isDistinct: Boolean = false) = safeDbOp {
-        val list = if (isDistinct) {
-            getBox<Food>()?.all?.distinctBy { it.foodName }
+    suspend fun filter(name: String?) = safeDbOp {
+        if (!name.isNullOrBlank()) {
+            getBox<Food>()?.query(Food_.foodName.contains(name))?.build()?.find()
+                ?.distinctBy { it.foodName }
         } else {
-            getBox<Food>()?.all
-        }
-        if (name.isNullOrBlank().not()) {
-            list?.filter { it.foodName?.contains(name) == true }
-        }
-        list
+            getBox<Food>()?.all?.distinctBy { it.foodName }
+        } ?: emptyList()
     } ?: emptyList()
 
     suspend fun removeAll() = safeDbOp {
@@ -194,10 +194,7 @@ object ObjectBox {
     }
 
     suspend fun remove(name: String) = safeDbOp {
-        getBox<Food>()?.run {
-            val filterIdList = all.filter { it.foodName == name }.map { it.id }
-            removeByIds(filterIdList)
-        }
+        getBox<Food>()?.query(Food_.foodName.equal(name))?.build()?.remove()
     }
 
     private val dbMutex = Mutex() // 协程并发锁，保证写入操作原子性
@@ -207,9 +204,7 @@ object ObjectBox {
     // 检查存储是否可读写（操作数据库前调用）
     fun isStorageAvailable(context: Context): Boolean {
         return try {
-            val state = Environment.getExternalStorageState()
-            val innerDir = context.filesDir
-            Environment.MEDIA_MOUNTED == state && innerDir.canRead() && innerDir.canWrite()
+            context.filesDir.canRead() && context.filesDir.canWrite()
         } catch (e: Exception) {
             false
         }