优化

app/src/main/java/io/legado/app/ui/main/bookshelf/style1/books/BooksFragment.kt

@@ -156,6 +156,7 @@ class BooksFragment() : BaseFragment(R.layout.fragment_books),
                 AppLog.put("书架更新出错", it)
             }.conflate().collect { list ->
                 binding.tvEmptyMsg.isGone = list.isNotEmpty()
+                binding.refreshLayout.isEnabled = list.isNotEmpty()
                 booksAdapter.setItems(list)
                 recoverPositionState()
                 delay(100)

app/src/main/java/io/legado/app/ui/widget/recycler/scroller/FastScrollRecyclerView.kt

@@ -3,7 +3,11 @@ package io.legado.app.ui.widget.recycler.scroller
 import android.content.Context
 import android.util.AttributeSet
 import android.view.ViewGroup
+import android.widget.FrameLayout
+import android.widget.RelativeLayout
 import androidx.annotation.ColorInt
+import androidx.constraintlayout.widget.ConstraintLayout
+import androidx.coordinatorlayout.widget.CoordinatorLayout
 import androidx.recyclerview.widget.RecyclerView
 import io.legado.app.R
 
@@ -149,7 +153,13 @@ class FastScrollRecyclerView : RecyclerView {
     override fun onAttachedToWindow() {
         super.onAttachedToWindow()
         mFastScroller.attachRecyclerView(this)
-        val parent = parent
+        var parent = parent
+        while (parent != null) {
+            when (parent) {
+                is ConstraintLayout, is CoordinatorLayout, is FrameLayout, is RelativeLayout -> break
+                else -> parent = parent.parent
+            }
+        }
         if (parent is ViewGroup && parent.indexOfChild(mFastScroller) == -1) {
             parent.addView(mFastScroller)
             mFastScroller.setLayoutParams(parent)

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

@@ -1,25 +1,26 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:orientation="vertical"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    android:orientation="vertical">
 
     <io.legado.app.ui.widget.TitleBar
         android:id="@+id/title_bar"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        app:title="@string/bookshelf_management"
         app:contentInsetStartWithNavigation="0dp"
         app:contentLayout="@layout/view_search"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintTop_toTopOf="parent"
+        app:title="@string/bookshelf_management" />
 
-    <androidx.recyclerview.widget.RecyclerView
+    <io.legado.app.ui.widget.recycler.scroller.FastScrollRecyclerView
         android:id="@+id/recycler_view"
         android:layout_width="match_parent"
         android:layout_height="0dp"
-        app:layout_constraintTop_toBottomOf="@id/title_bar"
-        app:layout_constraintBottom_toTopOf="@id/select_action_bar" />
+        android:scrollbars="none"
+        app:layout_constraintBottom_toTopOf="@id/select_action_bar"
+        app:layout_constraintTop_toBottomOf="@id/title_bar" />
 
     <io.legado.app.ui.widget.SelectActionBar
         android:id="@+id/select_action_bar"

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

@@ -1,18 +1,19 @@
 <?xml version="1.0" encoding="utf-8"?>
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    xmlns:tools="http://schemas.android.com/tools">
+    android:layout_height="match_parent">
 
     <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
         android:id="@+id/refresh_layout"
         android:layout_width="match_parent"
         android:layout_height="match_parent">
 
-        <androidx.recyclerview.widget.RecyclerView
+        <io.legado.app.ui.widget.recycler.scroller.FastScrollRecyclerView
             android:id="@+id/rv_bookshelf"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
+            android:scrollbars="none"
             tools:listitem="@layout/item_bookshelf_list" />
 
     </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
@@ -21,11 +22,11 @@
         android:id="@+id/tv_empty_msg"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:layout_gravity="center"
         android:layout_margin="16dp"
         android:gravity="center"
-        android:layout_gravity="center"
-        android:visibility="gone"
         android:text="@string/bookshelf_empty"
+        android:visibility="gone"
         tools:text="TextView" />
 
 </FrameLayout>