优化

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

@@ -39,11 +39,7 @@ abstract class AppDatabase : RoomDatabase() {
                 // .addMigrations(MIGRATION_3_4)
                 // .addMigrations(MIGRATION_4_5)
                 // .addMigrations(MIGRATION_5_6)
-                .addCallback(object : Callback() {
+                .fallbackToDestructiveMigration()
-                    override fun onCreate(db: SupportSQLiteDatabase) {
-                        super.onCreate(db)
-                    }
-                })
                 .build()
         }
 

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

@@ -10,7 +10,7 @@ import kotlinx.android.parcel.Parcelize
 @Parcelize
 @Entity(
     tableName = "book_sources",
-    indices = [(Index(value = ["sourceId"])), (Index(value = ["origin"], unique = false))]
+    indices = [(Index(value = ["origin"], unique = false))]
 )
 data class BookSource (
     @PrimaryKey

app/src/main/java/io/legado/app/ui/main/booksource/BookSourceAdapter.kt

@@ -20,10 +20,10 @@ class BookSourceAdapter : PagedListAdapter<BookSource, BookSourceAdapter.MyViewH
         @JvmField
         val DIFF_CALLBACK = object : DiffUtil.ItemCallback<BookSource>() {
             override fun areItemsTheSame(oldItem: BookSource, newItem: BookSource): Boolean =
-                oldItem.id == newItem.id
+                oldItem.origin == newItem.origin
 
             override fun areContentsTheSame(oldItem: BookSource, newItem: BookSource): Boolean =
-                oldItem.id == newItem.id
+                oldItem.origin == newItem.origin
                         && oldItem.name == newItem.name
                         && oldItem.group == newItem.group
                         && oldItem.isEnabled == newItem.isEnabled