优化

app/src/main/java/io/legado/app/ui/main/explore/ExploreDiffCallBack.kt

@@ -1,34 +0,0 @@
-package io.legado.app.ui.main.explore
-
-import androidx.recyclerview.widget.DiffUtil
-import io.legado.app.data.entities.BookSource
-
-
-class ExploreDiffCallBack(
-    private val oldItems: List<BookSource>,
-    private val newItems: List<BookSource>
-) :
-    DiffUtil.Callback() {
-
-    override fun getOldListSize(): Int {
-        return oldItems.size
-    }
-
-    override fun getNewListSize(): Int {
-        return newItems.size
-    }
-
-    override fun areItemsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
-        return true
-    }
-
-    override fun areContentsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
-        val oldItem = oldItems[oldItemPosition]
-        val newItem = newItems[newItemPosition]
-        if (oldItem.bookSourceName != newItem.bookSourceName) {
-            return false
-        }
-        return true
-    }
-
-}

app/src/main/java/io/legado/app/ui/main/explore/ExploreDiffItemCallBack.kt

@@ -0,0 +1,20 @@
+package io.legado.app.ui.main.explore
+
+import androidx.recyclerview.widget.DiffUtil
+import io.legado.app.data.entities.BookSource
+
+
+class ExploreDiffItemCallBack : DiffUtil.ItemCallback<BookSource>() {
+
+    override fun areItemsTheSame(oldItem: BookSource, newItem: BookSource): Boolean {
+        return true
+    }
+
+    override fun areContentsTheSame(oldItem: BookSource, newItem: BookSource): Boolean {
+        if (oldItem.bookSourceName != newItem.bookSourceName) {
+            return false
+        }
+        return true
+    }
+
+}

app/src/main/java/io/legado/app/ui/main/explore/ExploreFragment.kt

@@ -9,7 +9,6 @@ import androidx.appcompat.widget.SearchView
 import androidx.core.view.isGone
 import androidx.fragment.app.viewModels
 import androidx.lifecycle.lifecycleScope
-import androidx.recyclerview.widget.DiffUtil
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import io.legado.app.R
@@ -128,10 +127,7 @@ class ExploreFragment : VMBaseFragment<ExploreViewModel>(R.layout.fragment_explo
             }
             exploreFlow.collect {
                 binding.tvEmptyMsg.isGone = it.isNotEmpty() || searchView.query.isNotEmpty()
-                val diffResult = DiffUtil
+                adapter.setItems(it, ExploreDiffItemCallBack())
-                    .calculateDiff(ExploreDiffCallBack(ArrayList(adapter.getItems()), it))
-                adapter.setItems(it)
-                diffResult.dispatchUpdatesTo(adapter)
             }
         }
     }