up

app/src/main/java/io/legado/app/base/adapter/CommonRecyclerAdapter.kt

@@ -122,6 +122,17 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context) : Rec
         }
     }
 
+    fun setItemsNoNotify(items: List<ITEM>?) {
+        synchronized(lock) {
+            if (this.items.isNotEmpty()) {
+                this.items.clear()
+            }
+            if (items != null) {
+                this.items.addAll(items)
+            }
+        }
+    }
+
     fun setItems(items: List<ITEM>?) {
         synchronized(lock) {
             if (this.items.isNotEmpty()) {

app/src/main/java/io/legado/app/ui/changesource/ChangeSourceViewModel.kt

@@ -9,6 +9,7 @@ import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.SearchBook
 import io.legado.app.model.WebBook
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 import org.jetbrains.anko.debug
 
 class ChangeSourceViewModel(application: Application) : BaseViewModel(application) {
@@ -30,8 +31,12 @@ class ChangeSourceViewModel(application: Application) : BaseViewModel(applicatio
 
     private fun upAdapter() {
         callBack?.adapter()?.let {
+            val books = searchBooks.toList()
             val diffResult = DiffUtil.calculateDiff(DiffCallBack(it.getItems(), searchBooks.toList()))
-            diffResult.dispatchUpdatesTo(it)
+            launch {
+                it.setItemsNoNotify(books)
+                diffResult.dispatchUpdatesTo(it)
+            }
         }
     }