优化

app/src/main/java/io/legado/app/data/dao/BookGroupDao.kt

@@ -31,6 +31,9 @@ interface BookGroupDao {
     @get:Query("SELECT * FROM book_groups ORDER BY `order`")
     val all: List<BookGroup>
 
+    @Query("update book_groups set show = 1 where groupId = :groupId")
+    fun enableGroup(groupId: Long)
+
     @Insert(onConflict = OnConflictStrategy.REPLACE)
     fun insert(vararg bookGroup: BookGroup)
 

app/src/main/java/io/legado/app/ui/book/group/GroupManageDialog.kt

@@ -164,13 +164,16 @@ class GroupManageDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener
         }
 
         override fun areItemsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
-            return true
+            val oldItem = oldItems[oldItemPosition]
+            val newItem = newItems[newItemPosition]
+            return oldItem.groupId == newItem.groupId
         }
 
         override fun areContentsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
             val oldItem = oldItems[oldItemPosition]
             val newItem = newItems[newItemPosition]
             return oldItem.groupName == newItem.groupName
+                    && oldItem.show == newItem.show
         }
 
     }

app/src/main/java/io/legado/app/ui/main/bookshelf/BookshelfFragment.kt

@@ -12,6 +12,7 @@ import com.google.android.material.tabs.TabLayout
 import io.legado.app.App
 import io.legado.app.R
 import io.legado.app.base.VMBaseFragment
+import io.legado.app.constant.AppConst
 import io.legado.app.constant.EventBus
 import io.legado.app.constant.PreferKey
 import io.legado.app.data.entities.BookGroup
@@ -123,10 +124,14 @@ class BookshelfFragment : VMBaseFragment<BookshelfViewModel>(R.layout.fragment_b
 
     @Synchronized
     private fun upGroup(data: List<BookGroup>) {
-        bookGroups.clear()
-        bookGroups.addAll(data)
-        adapter.notifyDataSetChanged()
-        selectLastTab()
+        if (data.isEmpty()) {
+            App.db.bookGroupDao().enableGroup(AppConst.bookGroupAllId)
+        } else {
+            bookGroups.clear()
+            bookGroups.addAll(data)
+            adapter.notifyDataSetChanged()
+            selectLastTab()
+        }
     }
 
     @Synchronized