优化

app/src/main/java/io/legado/app/help/AdapterDataObserverHeader.kt

@@ -2,7 +2,10 @@ package io.legado.app.help
 
 import androidx.recyclerview.widget.RecyclerView
 
-internal class AdapterDataObserverProxy(var adapterDataObserver: RecyclerView.AdapterDataObserver, var headerCount: Int) : RecyclerView.AdapterDataObserver() {
+internal class AdapterDataObserverHeader(
+    var adapterDataObserver: RecyclerView.AdapterDataObserver,
+    var headerCount: Int
+) : RecyclerView.AdapterDataObserver() {
     override fun onChanged() {
         adapterDataObserver.onChanged()
     }

app/src/main/java/io/legado/app/help/FirstTopListUpCallback.kt

@@ -4,7 +4,7 @@ import androidx.recyclerview.widget.ListUpdateCallback
 import androidx.recyclerview.widget.RecyclerView
 import io.legado.app.base.adapter.ItemViewHolder
 
-class ToTopListUpCallback : ListUpdateCallback {
+class FirstTopListUpCallback : ListUpdateCallback {
     var firstInsert = -1
     lateinit var adapter: RecyclerView.Adapter<ItemViewHolder>