优化

app/src/main/java/io/legado/app/data/AppDatabase.kt

@@ -20,7 +20,7 @@ val appDb by lazy {
 }
 
 @Database(
-    version = 57,
+    version = 58,
     exportSchema = true,
     entities = [Book::class, BookGroup::class, BookSource::class, BookChapter::class,
         ReplaceRule::class, SearchBook::class, SearchKeyword::class, Cookie::class,
@@ -41,7 +41,8 @@ val appDb by lazy {
         AutoMigration(from = 53, to = 54),
         AutoMigration(from = 54, to = 55, spec = DatabaseMigrations.Migration_54_55::class),
         AutoMigration(from = 55, to = 56),
-        AutoMigration(from = 56, to = 57)
+        AutoMigration(from = 56, to = 57),
+        AutoMigration(from = 57, to = 58)
     ]
 )
 abstract class AppDatabase : RoomDatabase() {

app/src/main/java/io/legado/app/data/entities/BookGroup.kt

@@ -2,6 +2,7 @@ package io.legado.app.data.entities
 
 import android.content.Context
 import android.os.Parcelable
+import androidx.room.ColumnInfo
 import androidx.room.Entity
 import androidx.room.PrimaryKey
 import io.legado.app.R
@@ -16,7 +17,9 @@ data class BookGroup(
     var groupName: String,
     var cover: String? = null,
     var order: Int = 0,
-    var show: Boolean = true
+    var show: Boolean = true,
+    @ColumnInfo(defaultValue = "-1")
+    var bookSort: Int = -1
 ) : Parcelable {
 
     fun getManageName(context: Context): String {