优化

app/src/main/java/io/legado/app/ui/book/remote/RemoteBookActivity.kt

@@ -41,7 +41,7 @@ class RemoteBookActivity : VMBaseActivity<ActivityRemoteBookBinding,RemoteBookVi
         launch {
             viewModel.dataFlow.conflate().collect { remoteBooks ->
                 binding.refreshProgressBar.isAutoLoading = false
-                binding.tvEmptyMsg.isGone = remoteBooks.isEmpty()
+                binding.tvEmptyMsg.isGone = remoteBooks.isNotEmpty()
                 adapter.setItems(remoteBooks)
             }
         }

app/src/main/res/layout/activity_remote_book.xml

@@ -46,7 +46,7 @@
         android:layout_height="wrap_content"
         android:layout_margin="16dp"
         android:gravity="center"
-        android:visibility="visible"
+        android:visibility="gone"
         android:text="webDav book文件夹为空"
         app:layout_constraintTop_toBottomOf="@+id/title_bar"
         app:layout_constraintBottom_toBottomOf="parent"