点击分组提示分组书籍数量

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

@@ -193,7 +193,11 @@ class BookshelfFragment : VMBaseFragment<BookshelfViewModel>(R.layout.fragment_b
             }.show().applyTint()
     }
 
-    override fun onTabReselected(tab: TabLayout.Tab) = Unit
+    override fun onTabReselected(tab: TabLayout.Tab) {
+        fragmentMap[selectedGroup?.groupId]?.let {
+            toast("${selectedGroup?.groupName}(${it.getBooksCount()})")
+        }
+    }
 
     override fun onTabUnselected(tab: TabLayout.Tab) = Unit
 

app/src/main/java/io/legado/app/ui/main/bookshelf/books/BooksFragment.kt

@@ -135,6 +135,10 @@ class BooksFragment : BaseFragment(R.layout.fragment_books),
         }
     }
 
+    fun getBooksCount(): Int {
+        return booksAdapter.getActualItemCount()
+    }
+
     override fun open(book: Book) {
         when (book.type) {
             BookType.audio ->