From 76840ee9fc5fc54939803ad5f8e19da41ae74719 Mon Sep 17 00:00:00 2001
From: kunfei <gekunfei@live.com>
Date: Mon, 10 Feb 2020 22:15:56 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E6=8D=A2=E6=BA=90=E7=95=8C=E9=9D=A2?=
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---
 .../app/ui/changesource/ChangeSourceDialog.kt      | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/app/src/main/java/io/legado/app/ui/changesource/ChangeSourceDialog.kt b/app/src/main/java/io/legado/app/ui/changesource/ChangeSourceDialog.kt
index 6edebd27a..4b129acea 100644
--- a/app/src/main/java/io/legado/app/ui/changesource/ChangeSourceDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/changesource/ChangeSourceDialog.kt
@@ -13,6 +13,7 @@ import androidx.fragment.app.FragmentManager
 import androidx.lifecycle.Observer
 import androidx.recyclerview.widget.DiffUtil
 import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
 import io.legado.app.R
 import io.legado.app.constant.PreferKey
 import io.legado.app.data.entities.Book
@@ -93,6 +94,19 @@ class ChangeSourceDialog : DialogFragment(),
         recycler_view.layoutManager = LinearLayoutManager(context)
         recycler_view.addItemDecoration(recycler_view.getVerticalDivider())
         recycler_view.adapter = adapter
+        adapter.registerAdapterDataObserver(object : RecyclerView.AdapterDataObserver() {
+            override fun onItemRangeInserted(positionStart: Int, itemCount: Int) {
+                if (positionStart == 0) {
+                    recycler_view.scrollToPosition(0)
+                }
+            }
+
+            override fun onItemRangeMoved(fromPosition: Int, toPosition: Int, itemCount: Int) {
+                if (toPosition == 0) {
+                    recycler_view.scrollToPosition(0)
+                }
+            }
+        })
     }
 
     private fun initSearchView() {