默认分组无书籍时自动隐藏

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

@@ -18,7 +18,7 @@ interface BookDao {
     @Query("SELECT * FROM books WHERE origin = '${BookType.local}'")
     fun observeLocal(): LiveData<List<Book>>
 
-    @Query("select * from books where ((SELECT sum(groupId) FROM book_groups where groupId > 0) & `group`) = 0 and type != ${BookType.audio} and origin != '${BookType.local}'")
+    @Query("select * from books where type != ${BookType.audio} and origin != '${BookType.local}' and ((SELECT sum(groupId) FROM book_groups where groupId > 0) & `group`) = 0")
     fun observeNoGroup(): LiveData<List<Book>>
 
     @Query("SELECT bookUrl FROM books WHERE origin = '${BookType.local}'")

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

@@ -20,7 +20,7 @@ interface BookGroupDao {
     @Query(
         """
         SELECT * FROM book_groups where groupId >= 0 
-        or (groupId = -4 and show > 0 and (select count(bookUrl) from books where ((SELECT sum(groupId) FROM book_groups where groupId > 0) & `group`) = 0 and type != ${BookType.audio} and origin != '${BookType.local}') > 0)
+        or (groupId = -4 and show > 0 and (select count(bookUrl) from books where type != ${BookType.audio} and origin != '${BookType.local}' and ((SELECT sum(groupId) FROM book_groups where groupId > 0) & `group`) = 0) > 0)
         or (groupId = -3 and show > 0 and (select count(bookUrl) from books where type = ${BookType.audio}) > 0)
         or (groupId = -2 and show > 0 and (select count(bookUrl) from books where origin = '${BookType.local}') > 0)
         or (groupId = -1 and show > 0)