优化

app/src/main/java/io/legado/app/ui/book/arrange/ArrangeBookActivity.kt

@@ -16,6 +16,7 @@ import io.legado.app.lib.dialogs.okButton
 import io.legado.app.lib.theme.ATH
 import io.legado.app.ui.book.group.GroupSelectDialog
 import io.legado.app.utils.applyTint
+import io.legado.app.utils.getVerticalDivider
 import io.legado.app.utils.getViewModel
 import kotlinx.android.synthetic.main.activity_arrange_book.*
 import org.jetbrains.anko.sdk27.listeners.onClick
@@ -52,6 +53,7 @@ class ArrangeBookActivity : VMBaseActivity<ArrangeBookViewModel>(R.layout.activi
     private fun initView() {
         ATH.applyEdgeEffectColor(recycler_view)
         recycler_view.layoutManager = LinearLayoutManager(this)
+        recycler_view.addItemDecoration(recycler_view.getVerticalDivider())
         adapter = ArrangeBookAdapter(this, this)
         recycler_view.adapter = adapter
         cb_selected_all.onClick {

app/src/main/java/io/legado/app/ui/replacerule/ReplaceRuleActivity.kt

@@ -8,11 +8,9 @@ import android.view.Menu
 import android.view.MenuItem
 import android.view.SubMenu
 import androidx.appcompat.widget.SearchView
-import androidx.core.content.ContextCompat
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.Observer
 import androidx.recyclerview.widget.DiffUtil
-import androidx.recyclerview.widget.DividerItemDecoration
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
 import com.google.android.material.snackbar.Snackbar
@@ -95,12 +93,7 @@ class ReplaceRuleActivity : VMBaseActivity<ReplaceRuleViewModel>(R.layout.activi
         recycler_view.layoutManager = LinearLayoutManager(this)
         adapter = ReplaceRuleAdapter(this, this)
         recycler_view.adapter = adapter
-        recycler_view.addItemDecoration(
-            DividerItemDecoration(this, DividerItemDecoration.VERTICAL).apply {
-                ContextCompat.getDrawable(baseContext, R.drawable.ic_divider)?.let {
-                    this.setDrawable(it)
-                }
-            })
+        recycler_view.addItemDecoration(recycler_view.getVerticalDivider())
         val itemTouchCallback = ItemTouchCallback()
         itemTouchCallback.onItemTouchCallbackListener = adapter
         itemTouchCallback.isCanDrag = true

app/src/main/java/io/legado/app/utils/RecyclerViewExtensions.kt

@@ -0,0 +1,15 @@
+package io.legado.app.utils
+
+import androidx.core.content.ContextCompat
+import androidx.recyclerview.widget.DividerItemDecoration
+import androidx.recyclerview.widget.RecyclerView
+import io.legado.app.R
+
+
+fun RecyclerView.getVerticalDivider(): DividerItemDecoration {
+    return DividerItemDecoration(context, DividerItemDecoration.VERTICAL).apply {
+        ContextCompat.getDrawable(context, R.drawable.ic_divider)?.let {
+            this.setDrawable(it)
+        }
+    }
+}

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

@@ -3,7 +3,8 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:orientation="vertical"
     android:layout_width="match_parent"
-    android:layout_height="wrap_content">
+    android:layout_height="wrap_content"
+    android:padding="6dp">
 
     <io.legado.app.lib.theme.view.ATECheckBox
         android:id="@+id/checkbox"