diff --git a/app/src/main/java/io/legado/app/ui/main/bookshelf/BookshelfAdapter.kt b/app/src/main/java/io/legado/app/ui/main/bookshelf/BookshelfAdapter.kt
index c4176f78d..d3ba217a0 100644
--- a/app/src/main/java/io/legado/app/ui/main/bookshelf/BookshelfAdapter.kt
+++ b/app/src/main/java/io/legado/app/ui/main/bookshelf/BookshelfAdapter.kt
@@ -3,6 +3,7 @@ package io.legado.app.ui.main.bookshelf
 import androidx.fragment.app.Fragment
 import androidx.viewpager2.adapter.FragmentStateAdapter
 import io.legado.app.data.entities.BookGroup
+import io.legado.app.ui.main.bookshelf.books.BooksFragment
 
 
 class BookshelfAdapter(fragment: Fragment, val callBack: CallBack) :
diff --git a/app/src/main/java/io/legado/app/ui/main/bookshelf/BooksAdapter.kt b/app/src/main/java/io/legado/app/ui/main/bookshelf/books/BooksAdapter.kt
similarity index 98%
rename from app/src/main/java/io/legado/app/ui/main/bookshelf/BooksAdapter.kt
rename to app/src/main/java/io/legado/app/ui/main/bookshelf/books/BooksAdapter.kt
index 75b0f7787..e6ca5bc6e 100644
--- a/app/src/main/java/io/legado/app/ui/main/bookshelf/BooksAdapter.kt
+++ b/app/src/main/java/io/legado/app/ui/main/bookshelf/books/BooksAdapter.kt
@@ -1,4 +1,4 @@
-package io.legado.app.ui.main.bookshelf
+package io.legado.app.ui.main.bookshelf.books
 
 import android.content.Context
 import io.legado.app.R
@@ -16,7 +16,6 @@ import org.jetbrains.anko.sdk27.listeners.onLongClick
 class BooksAdapter(context: Context, private val callBack: CallBack) :
     SimpleRecyclerAdapter<Book>(context, R.layout.item_bookshelf_list) {
 
-
     override fun convert(holder: ItemViewHolder, item: Book, payloads: MutableList<Any>) {
         with(holder.itemView) {
             if (payloads.isEmpty()) {
diff --git a/app/src/main/java/io/legado/app/ui/main/bookshelf/BooksDiffCallBack.kt b/app/src/main/java/io/legado/app/ui/main/bookshelf/books/BooksDiffCallBack.kt
similarity index 96%
rename from app/src/main/java/io/legado/app/ui/main/bookshelf/BooksDiffCallBack.kt
rename to app/src/main/java/io/legado/app/ui/main/bookshelf/books/BooksDiffCallBack.kt
index c5b7d7c03..45ad277f2 100644
--- a/app/src/main/java/io/legado/app/ui/main/bookshelf/BooksDiffCallBack.kt
+++ b/app/src/main/java/io/legado/app/ui/main/bookshelf/books/BooksDiffCallBack.kt
@@ -1,4 +1,4 @@
-package io.legado.app.ui.main.bookshelf
+package io.legado.app.ui.main.bookshelf.books
 
 import androidx.recyclerview.widget.DiffUtil
 import io.legado.app.data.entities.Book
diff --git a/app/src/main/java/io/legado/app/ui/main/bookshelf/BooksFragment.kt b/app/src/main/java/io/legado/app/ui/main/bookshelf/books/BooksFragment.kt
similarity index 92%
rename from app/src/main/java/io/legado/app/ui/main/bookshelf/BooksFragment.kt
rename to app/src/main/java/io/legado/app/ui/main/bookshelf/books/BooksFragment.kt
index 1cf3e17de..4e7a3df15 100644
--- a/app/src/main/java/io/legado/app/ui/main/bookshelf/BooksFragment.kt
+++ b/app/src/main/java/io/legado/app/ui/main/bookshelf/books/BooksFragment.kt
@@ -1,4 +1,4 @@
-package io.legado.app.ui.main.bookshelf
+package io.legado.app.ui.main.bookshelf.books
 
 import android.os.Bundle
 import android.view.View
@@ -75,7 +75,10 @@ class BooksFragment : VMBaseFragment<BooksViewModel>(R.layout.fragment_books),
                     this.setDrawable(it)
                 }
             })
-        booksAdapter = BooksAdapter(requireContext(), this)
+        booksAdapter = BooksAdapter(
+            requireContext(),
+            this
+        )
         rv_bookshelf.adapter = booksAdapter
     }
 
@@ -89,7 +92,12 @@ class BooksFragment : VMBaseFragment<BooksViewModel>(R.layout.fragment_books),
         }
         bookshelfLiveData?.observe(this, Observer {
             val diffResult =
-                DiffUtil.calculateDiff(BooksDiffCallBack(booksAdapter.getItems(), it))
+                DiffUtil.calculateDiff(
+                    BooksDiffCallBack(
+                        booksAdapter.getItems(),
+                        it
+                    )
+                )
             booksAdapter.setItems(it, false)
             diffResult.dispatchUpdatesTo(booksAdapter)
         })
diff --git a/app/src/main/java/io/legado/app/ui/main/bookshelf/BooksViewModel.kt b/app/src/main/java/io/legado/app/ui/main/bookshelf/books/BooksViewModel.kt
similarity index 76%
rename from app/src/main/java/io/legado/app/ui/main/bookshelf/BooksViewModel.kt
rename to app/src/main/java/io/legado/app/ui/main/bookshelf/books/BooksViewModel.kt
index ef6d08fbb..6a7a51da3 100644
--- a/app/src/main/java/io/legado/app/ui/main/bookshelf/BooksViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/main/bookshelf/books/BooksViewModel.kt
@@ -1,4 +1,4 @@
-package io.legado.app.ui.main.bookshelf
+package io.legado.app.ui.main.bookshelf.books
 
 import android.app.Application
 import io.legado.app.base.BaseViewModel