fix(main): 修复菜品切换和重量计算相关问题

- 移除未使用的LinearLayoutManager和FoodOrderAdapter导入
- 添加isSwitchFood标志用于菜品切换时重置数据
- 优化resetSelectedFood方法，根据用户状态决定是否重新打开识别功能
- 将currentWeight修改为public访问权限
- 在重量变化时添加判断避免重复更新
- 注释掉不需要的重量更新调用
- 在菜品识别完成时添加重量更新
- 在清空选中项目时重置isSwitchFood标志
- 优化updateWeight方法中的逻辑判断
- 将倒计时重置任务提取为单独方法
- 添加switchFood逻辑控制，避免重复人脸识别
- 修复余量计量模式下的最后餐品处理逻辑

app/src/main/java/com/sw/dualscreen/activity/MainActivity.kt

@@ -24,11 +24,9 @@ import androidx.camera.lifecycle.ProcessCameraProvider
 import androidx.core.content.ContextCompat
 import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.GridLayoutManager
-import androidx.recyclerview.widget.LinearLayoutManager
 import com.google.common.util.concurrent.ListenableFuture
 import com.sw.dualscreen.GlobalData
 import com.sw.dualscreen.GlobalKey
-import com.sw.dualscreen.adapter.FoodOrderAdapter
 import com.sw.dualscreen.adapter.MainFoodListAdapter
 import com.sw.dualscreen.databinding.ActivityMainBinding
 import com.sw.dualscreen.dialog.EnvSwitchDialog
@@ -130,17 +128,27 @@ class MainActivity : BaseActivity<ActivityMainBinding>() {
             }
         }
     }
-
+    var isSwitchFood = false
+    /**
+     * 用于切换菜品时重置数据
+     */
     fun resetSelectedFood(foodInfo: FoodInfo) {
+        isSwitchFood = true
         recognizeViewModel.resetFaceState()
         updateCurrentFood(foodInfo)
         if (settlementMode == 0) {
             //联合支付，切换菜品重新请求接口
             presentation?.let {
-                it.pauseCamera()
-                it.step2FaceRecognizing(foodInfo, true)
+                val userId = presentation?.currentUserId
+                if(userId.isNullOrBlank()) {
+                    //切换菜品时，用户已离开重新打开识别功能
+                    it.pauseCamera()
+                    it.step2FaceRecognizing(foodInfo, true)
+                } else{
+                    //切换菜品时，用户未离开，重新请求接口
+                    it.step3ShowRecognizeResult(userId)
+                }
             }
-//                    presentation?.step3ShowRecognizeResult(presentation!!.currentUserId?:"")
         } else {
             //0-计费，1-不计费
             val mode = SPUtil.getInstance().get(GlobalKey.KEY_CHARGE_MODE, 0)
@@ -158,7 +166,7 @@ class MainActivity : BaseActivity<ActivityMainBinding>() {
     private var canIdentify: Boolean = false
     private var bottomSheetDialog: CustomBottomSheetDialog? = null
     private var lastWeight: Int = 0
-    private var currentWeight: Int = 0
+    var currentWeight: Int = 0
     private var lastPhotoUri: Uri? = null // 最后拍照的图片
     private var debouncer = Debouncer(2000)
     private var isRecognitionFood = true
@@ -360,9 +368,11 @@ class MainActivity : BaseActivity<ActivityMainBinding>() {
         //余量计量+联合支付人脸查询订单完成
         if (presentation!!.jointPaymentQueryFinish) {
             log("registerDataChange weight 联合支付-余量计量,updateWeight")
-            presentation?.updateWeight(weight)
-            log("registerDataChange weight 重置lastWeight与weigh：${weight}一致----------------1000006")
-            lastWeight = weight
+            if (lastWeight != weight) {
+                presentation?.updateWeight(weight)
+                log("registerDataChange weight 重置lastWeight与weigh：${weight}一致----------------1000006")
+                lastWeight = weight
+            }
             return
         }
         val isWeightChange = weight - lastWeight > WEIGHT_CHANGE_VALUE
@@ -443,7 +453,7 @@ class MainActivity : BaseActivity<ActivityMainBinding>() {
             val payTypeDesc = if (settlementMode == 0) "联合支付" else "独立支付"
             log("registerDataChange weight readWeight-${payTypeDesc},weight=$weight,lastWeight=$lastWeight,isWeightChange=$isWeightChange")
         }
-        presentation?.updateWeight(weight)
+//        presentation?.updateWeight(weight)
 
         if (weight <= WEIGHT_RESET_RECOGNIZE) {
             log("registerDataChange weight recognizeByWeight---00002，秤重未超过${WEIGHT_RESET_RECOGNIZE}克")
@@ -540,6 +550,8 @@ class MainActivity : BaseActivity<ActivityMainBinding>() {
         foodRecognizeState = true
         //查询到菜品信息，同步设置lastWeight=currentWeight
         lastWeight=currentWeight
+        presentation?.updateWeight(currentWeight)
+
         list.forEach { foodInfo ->
             val scoreItem = scoreList.firstOrNull { it.name == foodInfo.foodName }
             val score = scoreItem?.score ?: 0.0
@@ -749,6 +761,7 @@ class MainActivity : BaseActivity<ActivityMainBinding>() {
         checkedItem = null
         lastWeight = 0
         foodRecognizeState = true
+        isSwitchFood = false
     }
 
     private fun updateDateTime() {