...

app/src/main/java/com/base/browserwhite/ui/activity/news/NewsActivity.kt

@@ -105,6 +105,10 @@ class NewsActivity : BaseActivity<ActivityNewsBinding>() {
     }
 
     private fun requestMore(categoryId: Int, changeCategory: Boolean = false) {
+        if (changeCategory) {
+            newsAdapter.submitList(listOf())
+            binding.ivPlaceHolder.visibility = View.VISIBLE
+        }
         isLoading = true
         helper.trailingLoadState = LoadState.None
         val lastNewsId = newsAdapter.getLastPageNumber()