refactor(viewmodel): 将 searchFoodList/getCookFoodList 迁移至 StateFlow，DishListFragment 改用 combine 并行合并数据并修复分页本地数据混入问题

app/src/main/java/com/shuwei/dish/match/net/NetViewModel.kt

@@ -6,6 +6,9 @@ import com.shuwei.dish.match.entity.CookFoodEntity
 import com.shuwei.dish.match.entity.CookFoodGoodsEntity
 import com.shuwei.dish.match.entity.FoodRecord
 import com.shuwei.dish.match.entity.SeasoningEntity
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.launch
 
 /**
@@ -42,16 +45,19 @@ class NetViewModel(
         }
     }
 
+    /**
+     * 搜索菜品列表的 UI 状态流，UI 层通过 collect 监听
+     */
+    private val _searchFoodState = MutableStateFlow<UiState<MutableList<FoodRecord>?>>(UiState.Idle)
+    val searchFoodState: StateFlow<UiState<MutableList<FoodRecord>?>> = _searchFoodState.asStateFlow()
+
     /**
      * 搜索菜品列表
      */
-    fun searchFoodList(
+    fun searchFoodList(param: MutableMap<String, Any>) {
-        param: MutableMap<String, Any>,
-        onSuccess: (MutableList<FoodRecord>?) -> Unit,
-        onFailure: (String, String) -> Unit
-    ) {
         viewModelScope.launch {
-            repository.searchFoodList(param, onSuccess, onFailure)
+            _searchFoodState.value = UiState.Loading
+            _searchFoodState.value = repository.searchFoodList(param)
         }
     }
 

app/src/main/java/com/shuwei/dish/match/net/RemoteRepository.kt

@@ -46,18 +46,18 @@ class RemoteRepository {
     /**
      * 搜索菜品列表
      * @param param 查询参数
-     * @param onSuccess 成功回调
+     * @return UiState 包装的结果，Success 携带列表数据，Error 携带错误信息
-     * @param onFailure 失败回调，参数为 (errorCode, errorMsg)
      */
-    suspend fun searchFoodList(
+    suspend fun searchFoodList(param: MutableMap<String, Any>): UiState<MutableList<FoodRecord>?> {
-        param: MutableMap<String, Any>,
+        return try {
-        onSuccess: (MutableList<FoodRecord>?) -> Unit,
+            val resp = apiService.searchFoodList(param = param)
-        onFailure: (String, String) -> Unit
+            if (resp.isSuccess()) UiState.Success(resp.data)
-    ) = request(
+            else UiState.Error(resp.code, resp.msg ?: "")
-        onRequest = { apiService.searchFoodList(param = param) },
+        } catch (e: Exception) {
-        onSuccess = onSuccess,
+            val ex = getApiException(e)
-        onFailure = onFailure
+            UiState.Error("-1", ex.errorMsg)
-    )
+        }
+    }
 
     /**
      * 查询采样数据列表

app/src/main/java/com/shuwei/dish/match/net/UiState.kt

@@ -0,0 +1,15 @@
+package com.shuwei.dish.match.net
+
+/**
+ * 统一 UI 状态模型，用于 ViewModel 向 UI 层传递请求状态
+ * Idle    — 初始状态，未发起请求
+ * Loading — 请求进行中
+ * Success — 请求成功，携带数据
+ * Error   — 请求失败，携带错误码和错误信息
+ */
+sealed class UiState<out T> {
+    object Idle : UiState<Nothing>()
+    object Loading : UiState<Nothing>()
+    data class Success<T>(val data: T) : UiState<T>()
+    data class Error(val code: String, val msg: String) : UiState<Nothing>()
+}

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

@@ -107,8 +107,8 @@ class DishSamplingActivity : BaseActivity() {
             ViewModelProvider(this, factory)[AppViewModel::class.java]
     }
 
-    fun getCookFoodList(action: (MutableList<CookFoodEntity>?) -> Unit) {
+    fun getCookFoodList() {
-        appViewModel.getCookFoodList(cookMode = 1) { action(it) }
+        appViewModel.getCookFoodList(cookMode = 1)
     }
 
     /**

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

@@ -4,6 +4,9 @@ import android.annotation.SuppressLint
 import android.content.Intent
 import android.os.Bundle
 import android.view.LayoutInflater
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.lifecycleScope
+import androidx.lifecycle.repeatOnLifecycle
 import androidx.recyclerview.widget.LinearLayoutManager
 import com.shuwei.dish.match.R
 import com.shuwei.dish.match.adapter.FoodRecordAdapter
@@ -12,6 +15,7 @@ import com.shuwei.dish.match.base.BaseApp
 import com.shuwei.dish.match.databinding.ActivityFoodSearchBinding
 import com.shuwei.dish.match.databinding.LayoutEmptyViewBinding
 import com.shuwei.dish.match.entity.FoodRecord
+import com.shuwei.dish.match.net.UiState
 import com.shuwei.dish.match.utils.KeyboardUtil
 import com.shuwei.dish.match.utils.ext.addOnActionSearchListener
 import com.shuwei.dish.match.utils.ext.gone
@@ -19,6 +23,7 @@ import com.shuwei.dish.match.utils.ext.startActivity
 import com.shuwei.dish.match.utils.ext.toast
 import com.shuwei.dish.match.utils.ext.visible
 import java.io.Serializable
+import kotlinx.coroutines.launch
 
 class FoodSearchActivity : BaseActivity() {
 
@@ -83,6 +88,31 @@ class FoodSearchActivity : BaseActivity() {
             adapter = recordAdapter
         }
         addViewListener()
+        initObserver()
+    }
+
+    /**
+     * 收集 searchFoodState，统一处理 Loading / Success / Error 状态
+     */
+    private fun initObserver() {
+        lifecycleScope.launch {
+            repeatOnLifecycle(Lifecycle.State.STARTED) {
+                netViewModel.searchFoodState.collect { state ->
+                    when (state) {
+                        is UiState.Loading -> showLoading()
+                        is UiState.Success -> handleSearchResult(state.data)
+                        is UiState.Error -> {
+                            delayDismissLoading()
+                            finishRefresh()
+                            binding.refreshLayout.setEnableRefresh(true)
+                            toast(state.msg)
+                            if (pageNo == 1) loadEmptyView()
+                        }
+                        is UiState.Idle -> {}
+                    }
+                }
+            }
+        }
     }
 
     private fun addViewListener() {
@@ -140,61 +170,6 @@ class FoodSearchActivity : BaseActivity() {
 
     @SuppressLint("NotifyDataSetChanged")
     private fun queryListInfo(input: String) {
-        showLoading()
-//        val map = mutableMapOf(
-//            "foodName" to input.trim(),
-//            "pageNo" to "$pageNo",
-//            "pageSize" to "$pageSize",
-//            "canteenId" to BaseApp.canteenId
-//            "dinnerType" to getDinnerTypeText()
-//        )
-//        val sb = StringBuilder(UrlConfig.QUERY_FOOD_LIST).apply {
-//            append("?")
-//            map.forEach { (key, value) -> append("$key=$value&") }
-//        }
-//        sb.deleteCharAt(sb.length - 1)
-//        HttpUtil.get(
-//            url = sb.toString(),
-//            doSuccess = {
-//                delayDismissLoading()
-//                finishRefresh()
-//                binding.refreshLayout.run {
-//                    setEnableRefresh(true)
-//                }
-//                val json = it.toJsonString()
-//                val recordBean: FoodRecordBean? = json.toObject<FoodRecordBean>()
-//                if (recordBean == null || recordBean.records.isNullOrEmpty()) {
-////                    toast("暂未搜索到相关菜品信息")
-//                    if (pageNo == 1) {
-//                        loadEmptyView()
-//                    }
-//                    return@get
-//                }
-//                val records = recordBean.records
-//                if (pageNo == 1) {
-//                    list.clear()
-//                }
-//                list.addAll(records!!)
-//                recordAdapter.notifyDataSetChanged()
-//                val isLoadMoreEnable = records.size >= pageSize
-//                binding.refreshLayout.setEnableLoadMore(isLoadMoreEnable)
-//                if (isLoadMoreEnable) {
-//                    pageNo++
-//                }
-//            },
-//            doFailure = { code, msg ->
-//                binding.refreshLayout.run {
-//                    setEnableRefresh(true)
-//                }
-//                toast(msg)
-//                delayDismissLoading()
-//                finishRefresh()
-//                if (pageNo == 1) {
-//                    loadEmptyView()
-//                }
-//            }
-//        )
-
         val map = mutableMapOf<String, Any>(
             "foodName" to input.trim(),
             "pageNum" to pageNo,
@@ -202,40 +177,27 @@ class FoodSearchActivity : BaseActivity() {
             "placeId" to BaseApp.canteenId,
             "dinnerType" to getDinnerTypeText()
         )
-        netViewModel.searchFoodList(
+        netViewModel.searchFoodList(param = map)
-            param = map,
+    }
-            onSuccess = {
+
+    /**
+     * 处理搜索结果，填充列表或展示空视图
+     */
+    @SuppressLint("NotifyDataSetChanged")
+    private fun handleSearchResult(records: MutableList<FoodRecord>?) {
         delayDismissLoading()
         finishRefresh()
         binding.refreshLayout.setEnableRefresh(true)
-                if (it.isNullOrEmpty()) {
+        if (records.isNullOrEmpty()) {
-//                    toast("暂未搜索到相关菜品信息")
+            if (pageNo == 1) loadEmptyView()
-                    if (pageNo == 1) {
+            return
-                        loadEmptyView()
         }
-                    return@searchFoodList
+        if (pageNo == 1) list.clear()
-                }
+        list.addAll(records)
-                if (pageNo == 1) {
-                    list.clear()
-                }
-                list.addAll(it)
         recordAdapter.notifyDataSetChanged()
-                val isLoadMoreEnable = it.size >= pageSize
+        val isLoadMoreEnable = records.size >= pageSize
         binding.refreshLayout.setEnableLoadMore(isLoadMoreEnable)
-                if (isLoadMoreEnable) {
+        if (isLoadMoreEnable) pageNo++
-                    pageNo++
-                }
-            }, onFailure = { code, msg ->
-                binding.refreshLayout.run {
-                    setEnableRefresh(true)
-                }
-                toast(msg)
-                delayDismissLoading()
-                finishRefresh()
-                if (pageNo == 1) {
-                    loadEmptyView()
-                }
-            })
     }
 
     private fun finishRefresh() {

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

@@ -5,7 +5,10 @@ import android.content.Intent
 import android.os.Bundle
 import android.view.LayoutInflater
 import androidx.activity.addCallback
+import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.ViewModelProvider
+import androidx.lifecycle.lifecycleScope
+import androidx.lifecycle.repeatOnLifecycle
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
 import com.shuwei.dish.match.R
@@ -27,6 +30,7 @@ import com.shuwei.dish.match.utils.ext.visible
 import com.shuwei.dish.match.viewmodel.AppViewModel
 import com.shuwei.dish.match.viewmodel.factory.AppFactory
 import java.io.Serializable
+import kotlinx.coroutines.launch
 
 class SamplingListActivity : BaseActivity() {
 
@@ -47,10 +51,45 @@ class SamplingListActivity : BaseActivity() {
         initViewModel()
         initRecyclerView()
         addViewListener()
+        initObserver()
         requestData(true)
         onBackPressedDispatcher.addCallback(this) {  }
     }
 
+    /**
+     * 收集 cookFoodListState，将本地烹饪中数据渲染到列表
+     */
+    private fun initObserver() {
+        lifecycleScope.launch {
+            repeatOnLifecycle(Lifecycle.State.STARTED) {
+                appViewModel.cookFoodListState.collect { cookFoodEntities ->
+                    delayDismissLoading()
+                    if (cookFoodEntities.isNullOrEmpty()) {
+                        loadEmptyView()
+                        return@collect
+                    }
+                    val tempList = mutableListOf<FoodRecord>()
+                    cookFoodEntities.sortedByDescending { DateTimeUtil.convert(dateStr = it.createTime) }
+                        .forEach { entity ->
+                            tempList.add(FoodRecord().apply {
+                                foodId = entity.foodId
+                                foodName = entity.foodName
+                                cookMode = 1
+                                isCooking = true
+                            })
+                        }
+                    list.clear()
+                    list.addAll(tempList)
+                    dishAdapter.notifyDataSetChanged()
+                    binding.refreshLayout.run {
+                        setEnableRefresh(false)
+                        setEnableLoadMore(false)
+                    }
+                }
+            }
+        }
+    }
+
 
     private fun setTitleBar() {
         setTitleBar(titleBarAction = {
@@ -78,8 +117,8 @@ class SamplingListActivity : BaseActivity() {
         appViewModel = ViewModelProvider(this, factory)[AppViewModel::class.java]
     }
 
-    fun getCookFoodList(action: (MutableList<CookFoodEntity>?) -> Unit) {
+    fun getCookFoodList() {
-        appViewModel.getCookFoodList(cookMode = 1) { action(it) }
+        appViewModel.getCookFoodList(cookMode = 1)
     }
 
     fun deleteCookFoodAndGoods(foodId: String, action: () -> Unit) {
@@ -298,32 +337,7 @@ class SamplingListActivity : BaseActivity() {
     @SuppressLint("NotifyDataSetChanged")
     fun refreshLocalData() {
         showLoading()
-        //查询本地数据
+        getCookFoodList()
-        getCookFoodList { cookFoodEntities ->
-            delayDismissLoading()
-            if (cookFoodEntities.isNullOrEmpty()) {
-                loadEmptyView()
-                return@getCookFoodList
-            }
-            val tempList = mutableListOf<FoodRecord>()
-
-            cookFoodEntities.sortedByDescending { DateTimeUtil.convert(dateStr = it.createTime) }
-                .forEach { entity ->
-                    tempList.add(FoodRecord().apply {
-                        foodId = entity.foodId
-                        foodName = entity.foodName
-                        cookMode = 1
-                        isCooking = true
-                    })
-                }
-            list.clear()
-            list.addAll(tempList)
-            dishAdapter.notifyDataSetChanged()
-            binding.refreshLayout.run {
-                setEnableRefresh(false)
-                setEnableLoadMore(false)
-            }
-        }
     }
 
     private fun requestData(isCooking: Boolean) {

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

@@ -10,8 +10,6 @@ import com.shuwei.dish.match.base.BaseApp
 import com.shuwei.dish.match.databinding.ActivitySelectDishBinding
 import com.shuwei.dish.match.db.AppRepository
 import com.shuwei.dish.match.dialog.CommonDialog
-import com.shuwei.dish.match.entity.CookFoodEntity
-import com.shuwei.dish.match.entity.FoodRecord
 import com.shuwei.dish.match.ui.fragment.DishListFragment
 import com.shuwei.dish.match.utils.KeyboardUtil
 import com.shuwei.dish.match.utils.ext.addOnActionSearchListener
@@ -32,7 +30,8 @@ class SelectDishActivity : BaseActivity() {
 
     private lateinit var binding: ActivitySelectDishBinding
 
-    private lateinit var appViewModel: AppViewModel
+    lateinit var appViewModel: AppViewModel
+        private set
 
     private var dinnerType: String = "1"
 
@@ -72,8 +71,8 @@ class SelectDishActivity : BaseActivity() {
         appViewModel = ViewModelProvider(this, factory)[AppViewModel::class.java]
     }
 
-    fun getCookFoodList(action: (MutableList<CookFoodEntity>?) -> Unit) {
+    fun getCookFoodList() {
-        appViewModel.getCookFoodList(cookMode = 0, dinnerType = dinnerType) { action(it) }
+        appViewModel.getCookFoodList(cookMode = 0, dinnerType = dinnerType)
     }
 
     private var configFinished = false
@@ -189,16 +188,8 @@ class SelectDishActivity : BaseActivity() {
         isVisible = false
     }
 
-    public fun getFoodList(
+    public fun getFoodList(param: MutableMap<String, Any>) {
-        param: MutableMap<String, Any>,
+        netViewModel.searchFoodList(param = param)
-        onSuccess: (MutableList<FoodRecord>?) -> Unit,
-        onFailure: (String, String) -> Unit
-    ) {
-        netViewModel.searchFoodList(
-            param = param,
-            onSuccess = onSuccess,
-            onFailure = onFailure
-        )
     }
 
 }

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

@@ -5,6 +5,9 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.lifecycleScope
+import androidx.lifecycle.repeatOnLifecycle
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
 import com.chad.library.adapter4.util.setOnDebouncedItemClick
@@ -13,7 +16,9 @@ import com.shuwei.dish.match.base.BaseApp
 import com.shuwei.dish.match.base.BaseFragment
 import com.shuwei.dish.match.databinding.FragmentDishListBinding
 import com.shuwei.dish.match.databinding.LayoutEmptyViewBinding
+import com.shuwei.dish.match.entity.CookFoodEntity
 import com.shuwei.dish.match.entity.FoodRecord
+import com.shuwei.dish.match.net.UiState
 import com.shuwei.dish.match.ui.PrepareCookActivity
 import com.shuwei.dish.match.ui.SelectDishActivity
 import com.shuwei.dish.match.ui.SubmitFoodActivity
@@ -21,6 +26,8 @@ import com.shuwei.dish.match.utils.SwipeCallback
 import com.shuwei.dish.match.utils.ext.startActivity
 import com.shuwei.dish.match.utils.ext.toast
 import java.io.Serializable
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.launch
 
 class DishListFragment : BaseFragment<FragmentDishListBinding>() {
 
@@ -108,6 +115,7 @@ class DishListFragment : BaseFragment<FragmentDishListBinding>() {
             itemTouchHelper.attachToRecyclerView(this)
         }
         addViewListener()
+        initObserver()
 
         pageNo = 1
         activity.showLoading()
@@ -115,6 +123,39 @@ class DishListFragment : BaseFragment<FragmentDishListBinding>() {
         binding.refreshLayout.setEnableRefresh(true)
     }
 
+    /**
+     * 用 combine 同时监听网络结果与本地数据，网络成功时统一合并渲染
+     * pageNo > 1（加载更多）时 cookFoodListState 不参与合并，直接追加网络数据
+     */
+    private fun initObserver() {
+        viewLifecycleOwner.lifecycleScope.launch {
+            repeatOnLifecycle(Lifecycle.State.STARTED) {
+                combine(
+                    activity.netViewModel.searchFoodState,
+                    activity.appViewModel.cookFoodListState
+                ) { networkState, localList -> Pair(networkState, localList) }
+                    .collect { (networkState, localList) ->
+                        when (networkState) {
+                            is UiState.Loading -> activity.showLoading()
+                            is UiState.Success -> {
+                                activity.delayDismissLoading()
+                                finishRefresh()
+                                loadAndMergeDishList(networkState.data, localList)
+                            }
+                            is UiState.Error -> {
+                                if (isAdded.not()) return@collect
+                                toast(networkState.msg)
+                                finishRefresh()
+                                if (pageNo == 1) loadEmptyView()
+                                activity.delayDismissLoading()
+                            }
+                            is UiState.Idle -> {}
+                        }
+                    }
+            }
+        }
+    }
+
     private fun addViewListener() {
         binding.refreshLayout.run {
             setEnableRefresh(true)
@@ -147,72 +188,15 @@ class DishListFragment : BaseFragment<FragmentDishListBinding>() {
     @SuppressLint("NotifyDataSetChanged")
     @Suppress("unchecked_cast")
     fun getDishList() {
-        activity.showLoading()
+        val param = mutableMapOf<String, Any>(
-        activity.getFoodList(
-            param = mutableMapOf(
             "pageNum" to pageNo,
             "pageSize" to pageSize,
             "placeId" to BaseApp.canteenId,
             "dinnerType" to getDinnerTypeText()
-            ),
-            onSuccess = { records ->
-                activity.delayDismissLoading()
-                finishRefresh()
-                loadDishList(records)
-            },
-            onFailure = { code, msg ->
-                if (isAdded.not()) {
-                    return@getFoodList
-                }
-                toast(msg)
-                finishRefresh()
-                if (pageNo == 1) {
-                    loadEmptyView()
-                }
-                activity.delayDismissLoading()
-            }
         )
-//        val map = mapOf(
+        // 网络与本地并行触发，pageNo > 1 时不重复查询本地数据
-////            "foodName" to input,
+        activity.getFoodList(param = param)
-//            "dinnerType" to getDinnerTypeText(),
+        if (pageNo == 1) activity.getCookFoodList()
-//            "pageNo" to "$pageNo",
-//            "pageSize" to "$pageSize",
-//            "canteenId" to BaseApp.canteenId
-//        )
-//        val sb = StringBuilder(UrlConfig.QUERY_FOOD_LIST).apply {
-//            append("?")
-//            map.forEach { (key, value) -> append("$key=$value&") }
-//        }
-//        sb.deleteCharAt(sb.length - 1)
-//        HttpUtil.get(
-//            url = sb.toString(),
-//            doSuccess = { data ->
-//                binding.refreshLayout.run {
-//                    setEnableRefresh(true)
-//                }
-//                activity.delayDismissLoading()
-//                finishRefresh()
-//                val json = data.toJsonString()
-//                val recordBean: FoodRecordBean? = json.toObject<FoodRecordBean>()
-//                loadDishList(recordBean)
-//            }, doFailure = { code, msg ->
-//                try {
-//                    if (isAdded.not()) {
-//                        return@get
-//                    }
-//                    binding.refreshLayout.run {
-//                        setEnableRefresh(true)
-//                    }
-//                    toast(msg)
-//                    finishRefresh()
-//                    if (pageNo == 1) {
-//                        loadEmptyView()
-//                    }
-//                    activity.delayDismissLoading()
-//                } catch (e: Exception) {
-//                    e.printStackTrace()
-//                }
-//            })
     }
 
     private var emptyViewBinding: LayoutEmptyViewBinding? = null
@@ -248,24 +232,41 @@ class DishListFragment : BaseFragment<FragmentDishListBinding>() {
         }
     }
 
+    /**
+     * 将网络数据与本地烹饪中数据合并后渲染列表
+     * pageNo > 1 时忽略本地数据，直接追加网络数据，避免 combine 带入旧的本地状态
+     */
     @SuppressLint("NotifyDataSetChanged")
-    private fun refreshLocalData(list: MutableList<FoodRecord>) {
+    private fun loadAndMergeDishList(
-        activity.getCookFoodList { cookFoodEntities ->
+        records: MutableList<FoodRecord>?,
-            if (cookFoodEntities.isNullOrEmpty()) {
+        localList: MutableList<CookFoodEntity>?
-                return@getCookFoodList
+    ) {
+        try {
+            if (isAdded.not()) return
+            // pageNo > 1 时不参与本地合并，避免 combine 带入旧的本地状态
+            val effectiveLocalList = if (pageNo == 1) localList else null
+            if (records.isNullOrEmpty() && effectiveLocalList.isNullOrEmpty()) {
+                if (pageNo == 1) loadEmptyView()
+                return
             }
-            val tempList = mutableListOf<FoodRecord>()
+            if (pageNo == 1) list.clear()
 
-            cookFoodEntities.forEachIndexed { index, entity ->
+            val mergedList = records?.toMutableList() ?: mutableListOf()
-                val food = list.firstOrNull { it.foodId == entity.foodId }
+
+            // 仅 pageNo == 1 时才有本地数据参与合并
+            if (!effectiveLocalList.isNullOrEmpty()) {
+                val cookingItems = mutableListOf<FoodRecord>()
+                effectiveLocalList.forEachIndexed { index, entity ->
+                    val food = mergedList.firstOrNull { it.foodId == entity.foodId }
                     if (food != null) {
+                        mergedList.remove(food)
                         food.isCooking = true
                         food.sort = index
                         food.dinnerType = entity.dinnerType ?: "0"
-                    tempList.add(food)
+                        cookingItems.add(food)
                     } else {
-                    //当前查询到的list不包括本地数据id，可能数据在很多页以后了，暂时只能直接构造数据
+                        // 当前网络数据不包含该本地记录，直接构造
-                    tempList.add(
+                        cookingItems.add(
                             FoodRecord(
                                 foodId = entity.foodId,
                                 foodName = entity.foodName,
@@ -276,36 +277,20 @@ class DishListFragment : BaseFragment<FragmentDishListBinding>() {
                         )
                     }
                 }
-            list.removeAll(tempList)
+                mergedList.addAll(0, cookingItems)
-            list.addAll(0, tempList)
-            dishAdapter.notifyDataSetChanged()
-        }
             }
 
-    @SuppressLint("NotifyDataSetChanged")
+            if (pageNo >= 2 && !localList.isNullOrEmpty()) {
-    private fun loadDishList(records: MutableList<FoodRecord>?) {
+                //第2页起，从mergedList中移除localList中的同foodId数据
-        try {
+                val localIds = localList.map { it.foodId }.toHashSet()
-            if (isAdded.not()) {
+                mergedList.removeAll { it.foodId in localIds }
-                return
             }
-            if (records.isNullOrEmpty()) {
+
-                //toast("暂未搜索到相关菜品信息")
+            list.addAll(mergedList)
-                if (pageNo == 1) {
-                    loadEmptyView()
-                }
-                return
-            }
-            if (pageNo == 1) {
-                list.clear()
-            }
-            list.addAll(records)
             dishAdapter.notifyDataSetChanged()
-            val isLoadMoreEnable = records.size >= pageSize
+            val isLoadMoreEnable = (records?.size ?: 0) >= pageSize
             binding.refreshLayout.setEnableLoadMore(isLoadMoreEnable)
-            if (isLoadMoreEnable) {
+            if (isLoadMoreEnable) pageNo++
-                pageNo++
-            }
-            refreshLocalData(list)
         } catch (e: Exception) {
             e.printStackTrace()
         }

app/src/main/java/com/shuwei/dish/match/viewmodel/AppViewModel.kt

@@ -6,6 +6,9 @@ import com.shuwei.dish.match.db.AppRepository
 import com.shuwei.dish.match.entity.CookFoodEntity
 import com.shuwei.dish.match.entity.CookFoodGoodsEntity
 import com.shuwei.dish.match.entity.SeasoningEntity
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
@@ -26,14 +29,15 @@ class AppViewModel(private val rep: AppRepository) : ViewModel() {
         }
     }
 
+    private val _cookFoodListState = MutableStateFlow<MutableList<CookFoodEntity>?>(null)
+    val cookFoodListState: StateFlow<MutableList<CookFoodEntity>?> = _cookFoodListState.asStateFlow()
+
     fun getCookFoodList(
         cookMode: Int,
-        dinnerType: String = "0",
+        dinnerType: String = "0"
-        action: (MutableList<CookFoodEntity>?) -> Unit
     ) {
         viewModelScope.launch {
-            val data = rep.getCookFoodList(cookMode, dinnerType)
+            _cookFoodListState.value = rep.getCookFoodList(cookMode, dinnerType)
-            action(data)
         }
     }