refactor(layout): 优化布局尺寸计算逻辑并提取公共工具类

- 添加 SizeTool 工具类统一管理 Flexbox 布局尺寸计算
- 在 MasterScaleActivity 中使用 SizeTool 替代硬编码计算
- 在 SeasoningConfigFragment 中使用 SizeTool 重构尺寸计算
- 在 SlaveActivity 中应用统一的尺寸计算方法
- 更新 Seasoning18GridAdapter 和 Seasoning22GridAdapter 使用现代化布局参数设置
- 调整 fragment_seasoning_config.xml 中的边距和内边距数值
- 为布局文件添加 tools:itemCount 属性支持预览功能

app/src/main/java/com/shuwei/dish/match/adapter/Seasoning18GridAdapter.kt

@@ -6,6 +6,7 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.core.content.ContextCompat
+import androidx.core.view.updateLayoutParams
 import androidx.recyclerview.widget.RecyclerView
 import com.chad.library.adapter4.BaseQuickAdapter
 import com.chad.library.adapter4.viewholder.QuickViewHolder
@@ -25,7 +26,8 @@ import com.shuwei.dish.match.utils.ext.dp
  */
 class Seasoning18GridAdapter(
     private val showNameOnly: Boolean = false,
-    private val showAddress: Boolean = false
+    private val showAddress: Boolean = false,
+    private val leftRightSpace: Int = 10.dp
 ) : BaseQuickAdapter<ScaleData, Seasoning18GridAdapter.VH>(mutableListOf()) {
 
     /** 空位哨兵，address=0 表示无效 */
@@ -47,12 +49,12 @@ class Seasoning18GridAdapter(
         val b = ListItemScale22RowBinding.inflate(LayoutInflater.from(context), parent, false)
         val margin = if (viewType == 0) 12.dp else 2.dp
         val screenWidth = parent.resources.displayMetrics.widthPixels
-        val cellSize = (screenWidth - 6 * margin * 2 - 10.dp) / 6
-        (b.root.layoutParams as? ViewGroup.MarginLayoutParams)?.also {
-            it.width = cellSize
-            it.height = cellSize
-            if (viewType == 0) it.setMargins(margin, 0, margin, 2.dp)
-            else it.setMargins(margin, margin, margin, margin)
+        val cellSize = (screenWidth - 6 * margin * 2 - leftRightSpace) / 6
+        b.root.updateLayoutParams<ViewGroup.MarginLayoutParams> {
+            width = cellSize
+            height = cellSize
+            if (viewType == 0) setMargins(margin, 0, margin, 2.dp)
+            else setMargins(margin, margin, margin, margin)
         }
         val baseSp = (cellSize / parent.resources.displayMetrics.density).toInt()
         b.tvAddress.textSize = (baseSp * 0.14f).coerceIn(8f, 12f)

app/src/main/java/com/shuwei/dish/match/adapter/Seasoning22GridAdapter.kt

@@ -6,6 +6,7 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.core.content.ContextCompat
+import androidx.core.view.updateLayoutParams
 import androidx.recyclerview.widget.RecyclerView
 import com.chad.library.adapter4.BaseQuickAdapter
 import com.chad.library.adapter4.viewholder.QuickViewHolder
@@ -51,7 +52,7 @@ class Seasoning22GridAdapter(
     override fun onCreateViewHolder(context: Context, parent: ViewGroup, viewType: Int): VH {
         val b = ListItemScale22RowBinding.inflate(LayoutInflater.from(context), parent, false)
         val cellSize = if (viewType == 1) largeSize else smallSize
-        (b.root.layoutParams as? FlexboxLayoutManager.LayoutParams)?.apply {
+        b.root.updateLayoutParams<FlexboxLayoutManager.LayoutParams> {
             width = cellSize
             height = cellSize
             setMargins(2.dp, 2.dp, 2.dp, 2.dp)

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

@@ -33,6 +33,7 @@ import com.shuwei.dish.match.scale.ScaleServiceManager
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import com.shuwei.dish.match.utils.NetworkUtil
+import com.shuwei.dish.match.utils.SizeTool
 import com.shuwei.dish.match.utils.WeightUtil
 import com.shuwei.dish.match.utils.ext.dp
 import com.shuwei.dish.match.utils.ext.toast
@@ -51,7 +52,7 @@ private const val VIEW_TYPE_SCALE1 = 3
 class MasterScaleActivity : BaseActivity() {
 
     private lateinit var binding: ActivityMasterScaleBinding
-
+    private val size by lazy { SizeTool.getFlexLayoutSize(10.dp) }
     private data class DeviceGroup(
         val deviceId: String,
         val ip: String,
@@ -357,12 +358,7 @@ class MasterScaleActivity : BaseActivity() {
             b.tvDeviceLabel.text = "设备：${group.deviceId}"
 
             if (innerAdapter == null) {
-                val screenWidth = resources.displayMetrics.widthPixels
-                val usable = screenWidth - 8 * 4.dp - 10.dp
-                val smallSize = usable / 9
-                val largeSize = (usable - smallSize * 6) / 2
-                val rvHeight = smallSize * 3 + 3 * 4.dp
-                b.rvScales.layoutParams = b.rvScales.layoutParams.also { it.height = rvHeight }
+                b.rvScales.layoutParams = b.rvScales.layoutParams.also { it.height = size.rvHeight }
                 b.rvScales.layoutManager = FlexboxLayoutManager(b.root.context).apply {
                     flexDirection = FlexDirection.COLUMN
                     flexWrap = FlexWrap.WRAP
@@ -370,8 +366,8 @@ class MasterScaleActivity : BaseActivity() {
                 }
                 b.rvScales.itemAnimator = null
                 innerAdapter = Seasoning22GridAdapter(
-                    largeSize,
-                    smallSize,
+                    size.largeSize,
+                    size.smallSize,
                     showNameOnly = false,
                     showAddress = true
                 ).apply {

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

@@ -27,6 +27,7 @@ import com.shuwei.dish.match.scale.ScaleData
 import com.shuwei.dish.match.scale.ScaleDeviceConfig
 import com.shuwei.dish.match.scale.ScaleServiceManager
 import com.shuwei.dish.match.utils.NetworkUtil
+import com.shuwei.dish.match.utils.SizeTool
 import com.shuwei.dish.match.utils.WeightUtil
 import com.shuwei.dish.match.utils.ext.dp
 import kotlinx.coroutines.Dispatchers
@@ -61,6 +62,7 @@ class SlaveActivity : BaseActivity() {
     private val mainHandler = Handler(Looper.getMainLooper())
     /** 当前高亮清除任务，新高亮触发时取消旧任务 */
     private var clearHighlightRunnable: Runnable? = null
+    private val size by lazy { SizeTool.getFlexLayoutSize(10.dp) }
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -90,13 +92,8 @@ class SlaveActivity : BaseActivity() {
         binding.rvScaleList.itemAnimator = null
         when (GlobalData.deviceId) {
             ScaleDeviceConfig.DEVICE_ID_22 -> {
-                val screenWidth = resources.displayMetrics.widthPixels
-                val usable = screenWidth - 8 * 4.dp - 10.dp
-                val smallSize = usable / 9
-                val largeSize = (usable - smallSize * 6) / 2
-                val rvHeight = smallSize * 3 + 3 * 4.dp
                 binding.rvScaleList.updateLayoutParams<LinearLayout.LayoutParams> {
-                    height = rvHeight
+                    height = size.rvHeight
                     weight = 0f
                     topMargin = 20.dp
                 }
@@ -105,7 +102,7 @@ class SlaveActivity : BaseActivity() {
                     flexWrap = FlexWrap.WRAP
                     alignItems = AlignItems.FLEX_START
                 }
-                scale22Adapter = Seasoning22GridAdapter(largeSize, smallSize, showNameOnly = false).also {
+                scale22Adapter = Seasoning22GridAdapter(size.largeSize, size.smallSize, showNameOnly = false).also {
                     it.onItemClick = { scale, _ -> showTareDialog(scale.address) }
                 }
                 binding.rvScaleList.adapter = scale22Adapter

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

@@ -25,6 +25,7 @@ import com.shuwei.dish.match.scale.ScaleEvent
 import com.shuwei.dish.match.scale.ScaleServiceManager
 import com.shuwei.dish.match.scale.ScaleEvent.SlotConfig
 import com.shuwei.dish.match.ui.SettingActivity
+import com.shuwei.dish.match.utils.SizeTool
 import com.shuwei.dish.match.utils.WeightUtil
 import com.shuwei.dish.match.utils.ext.dp
 import kotlinx.coroutines.Dispatchers
@@ -50,7 +51,7 @@ class SeasoningConfigFragment : BaseFragment<FragmentSeasoningConfigBinding>() {
 //    private lateinit var appViewModel: AppViewModel
 
     private val adapter22 by lazy { buildAdapter22() }
-    private val adapter18 by lazy { Seasoning18GridAdapter(showNameOnly = true) }
+    private val adapter18 by lazy { Seasoning18GridAdapter(showNameOnly = true, leftRightSpace = 20.dp) }
 
     /** 各秤的上一次重量快照，key 格式 "{deviceId}#{address}"，用于计算 delta */
     private val weightSnapshot = mutableMapOf<String, Double>()
@@ -150,24 +151,23 @@ class SeasoningConfigFragment : BaseFragment<FragmentSeasoningConfigBinding>() {
 //        appViewModel = ViewModelProvider(this, factory)[AppViewModel::class.java]
 //    }
 
+
+    private val size by lazy { SizeTool.getFlexLayoutSize(20.dp) }
     /** 构建上层（22格）Adapter，需要先计算格子尺寸 */
     private fun buildAdapter22(): Seasoning22GridAdapter {
-        val usable = resources.displayMetrics.widthPixels - 8 * 4.dp - 10.dp
-        val smallSize = usable / 9
-        val largeSize = (usable - smallSize * 6) / 2
-        return Seasoning22GridAdapter(largeSize, smallSize, showNameOnly = true)
+        return Seasoning22GridAdapter(
+            largeSize = size.largeSize,
+            smallSize = size.smallSize,
+            showNameOnly = true
+        )
     }
 
     /** 配置两个 RecyclerView */
     private fun setupRecyclerViews() {
         // 上层：FlexboxLayoutManager，仿 MasterScaleActivity 中 Scale22VH 的布局方式
         // rvTop 高度 = 小格子尺寸 * 3行 + 3 * 间距，与 Scale22VH 保持一致
-        val screenWidth = resources.displayMetrics.widthPixels
-        val usable = screenWidth - 8 * 4.dp - 10.dp
-        val smallSize = usable / 9
-        val rvTopHeight = smallSize * 3 + 3 * 4.dp
         binding.rvTop.apply {
-            layoutParams = layoutParams.also { it.height = rvTopHeight }
+            layoutParams = layoutParams.also { it.height = size.rvHeight }
             layoutManager = FlexboxLayoutManager(requireContext()).apply {
                 flexDirection = FlexDirection.COLUMN
                 flexWrap = FlexWrap.WRAP

app/src/main/java/com/shuwei/dish/match/utils/SizeTool.kt

@@ -0,0 +1,25 @@
+package com.shuwei.dish.match.utils
+
+import com.shuwei.dish.match.base.BaseApp
+import com.shuwei.dish.match.utils.ext.dp
+
+data class FlexLayoutSize(
+    val smallSize: Int,
+    val largeSize: Int,
+    val rvHeight: Int
+)
+
+object SizeTool {
+
+    fun getFlexLayoutSize(leftRightSpace: Int = 10.dp): FlexLayoutSize {
+        // 上层：FlexboxLayoutManager，仿 MasterScaleActivity 中 Scale22VH 的布局方式
+        // rvTop 高度 = 小格子尺寸 * 3行 + 3 * 间距，与 Scale22VH 保持一致
+        val screenWidth = BaseApp.instance!!.resources.displayMetrics.widthPixels
+        val usable = screenWidth - 8 * 4.dp - leftRightSpace
+        val smallSize = usable / 9
+        val largeSize = (usable - smallSize * 6) / 2
+        val rvHeight = smallSize * 3 + 3 * 4.dp
+        return FlexLayoutSize(smallSize, largeSize, rvHeight)
+    }
+
+}

app/src/main/res/layout/activity_master_scale.xml

@@ -59,6 +59,7 @@
         app:layout_constraintTop_toBottomOf="@id/tvConnectionStatus"
         app:layout_constraintBottom_toBottomOf="parent"
         android:overScrollMode="never"
+        tools:itemCount="4"
         tools:listitem="@layout/list_type_scale22"/>
 
 </androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/fragment_seasoning_config.xml

@@ -8,9 +8,9 @@
     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_marginStart="0dp"
-        android:layout_marginEnd="0dp"
-        android:paddingBottom="20dp"
+        android:layout_marginStart="10dp"
+        android:layout_marginEnd="10dp"
+        android:paddingBottom="10dp"
         android:layout_marginTop="10dp"
         android:background="@drawable/shape_white_30_corners"
         android:orientation="vertical">