优化

app/src/main/java/io/legado/app/ui/book/arrange/ArrangeBookActivity.kt

@@ -61,6 +61,7 @@ class ArrangeBookActivity : VMBaseActivity<ArrangeBookViewModel>(R.layout.activi
         booksLiveData = App.db.bookDao().observeAll()
         booksLiveData?.observe(this, Observer {
             adapter.setItems(it)
+            upSelectCount()
         })
     }
 

app/src/main/java/io/legado/app/ui/book/arrange/ArrangeBookAdapter.kt

@@ -27,6 +27,7 @@ class ArrangeBookAdapter(context: Context, val callBack: CallBack) :
                 } else {
                     selectedBooks.remove(item.bookUrl)
                 }
+                callBack.upSelectCount()
             }
             onClick {
                 checkbox.isChecked = !checkbox.isChecked
@@ -35,6 +36,7 @@ class ArrangeBookAdapter(context: Context, val callBack: CallBack) :
                 } else {
                     selectedBooks.remove(item.bookUrl)
                 }
+                callBack.upSelectCount()
             }
         }
     }