feat(activity): 搜索菜品直接刷新列表，切换餐次自动清空搜索框

- jumpSearch 改为调用 FoodListFragment.getDishList(foodName)，不再跳转 FoodSearchActivity
- 切换餐次时清空输入框，用 isClearingByTabSwitch 标志避免重复请求
- 手动清空输入框时自动触发查全部数据
- FoodListFragment.getDishList 新增 foodName 参数，支持按名称过滤

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/src/main/java/com/shuwei/dish/match/ui/CookingModeActivity.kt

@@ -3,6 +3,7 @@ package com.shuwei.dish.match.ui
 import android.content.Intent
 import android.os.Bundle
 import androidx.activity.addCallback
+import androidx.core.widget.addTextChangedListener
 import androidx.lifecycle.lifecycleScope
 import kotlinx.coroutines.launch
 import com.shuwei.dish.match.R
@@ -92,6 +93,9 @@ class CookingModeActivity : BaseActivity() {
             .show()
     }
 
+    /** 切换餐次时清空输入框，用此标志跳过 afterTextChanged 的查询触发 */
+    private var isClearingByTabSwitch = false
+
     fun addViewListener() {
         binding.dishRadioGroup.setOnCheckedChangeListener { _, checkedId ->
             dinnerType = when (checkedId) {
@@ -100,6 +104,10 @@ class CookingModeActivity : BaseActivity() {
                 R.id.rbDinner -> "3"
                 else -> "1"
             }
+            // 切换餐次时清空搜索框，避免用户误以为列表是被过滤的状态
+            isClearingByTabSwitch = true
+            binding.etInputDish.text?.clear()
+            isClearingByTabSwitch = false
             loadFragment()
         }
         binding.etInputDish.addOnActionSearchListener {
@@ -108,6 +116,17 @@ class CookingModeActivity : BaseActivity() {
         binding.ivDishSearch.setOnClickListener {
             jumpSearch()
         }
+        // 输入框清空时自动查询全部数据（切换餐次触发的清空除外，由 loadFragment 负责刷新）
+        binding.etInputDish.addTextChangedListener(afterTextChanged = { text ->
+            if (!isClearingByTabSwitch && text.isNullOrBlank()) {
+                currentFragment()?.getDishList(pageNo = 1, dinnerType = dinnerType)
+            }
+        })
+    }
+
+    /** 获取当前显示的 FoodListFragment */
+    private fun currentFragment(): FoodListFragment? {
+        return runCatching { fragmentList[dinnerType.toInt() - 1] }.getOrNull()
     }
 
     private fun jumpSearch() {
@@ -116,10 +135,7 @@ class CookingModeActivity : BaseActivity() {
             toast(binding.etInputDish.hint.toString())
             return
         }
-        startActivity<FoodSearchActivity> {
-            putExtra(FoodSearchActivity.DINNER_TYPE, dinnerType)
-            putExtra(FoodSearchActivity.FOOD_NAME, searchText)
-        }
+        currentFragment()?.getDishList(pageNo = 1, dinnerType = dinnerType, foodName = searchText)
         hideKeyboard()
     }
 

app/src/main/java/com/shuwei/dish/match/ui/fragment/FoodListFragment.kt

@@ -199,10 +199,10 @@ class FoodListFragment : BaseFragment<FragmentFoodListBinding>() {
         }
     }
 
-    fun getDishList(pageNo: Int, dinnerType: String) {
+    fun getDishList(pageNo: Int, dinnerType: String, foodName: String? = null) {
         this.pageNo = pageNo
         this.dinnerType = dinnerType
-        getDishList()
+        getDishList(foodName)
     }
 
     fun getDinnerTypeText(): String {
@@ -216,13 +216,15 @@ class FoodListFragment : BaseFragment<FragmentFoodListBinding>() {
 
     @SuppressLint("NotifyDataSetChanged")
     @Suppress("unchecked_cast")
-    fun getDishList() {
+    fun getDishList(foodName: String? = null) {
         val param = mutableMapOf<String, Any>(
             "pageNum" to pageNo,
             "pageSize" to pageSize,
             "placeId" to BaseApp.canteenId,
             "dinnerType" to getDinnerTypeText()
         )
+        // foodName 不为空时按名称过滤，为 null 时查全部
+        foodName?.let { param["foodName"] = it }
         activity.getFoodList(param = param)
         if (pageNo == 1) activity.getCookFoodList()
     }