up

app/src/main/java/io/legado/app/ui/book/info/BookInfoActivity.kt

@@ -204,8 +204,10 @@ class BookInfoActivity : VMBaseActivity<BookInfoViewModel>(R.layout.activity_boo
             }
         }
         iv_chapter_top.onClick {
-            adapter.reorder = !adapter.reorder
-            adapter.notifyDataSetChanged()
+            rv_chapter_list.scrollToPosition(0)
+        }
+        iv_chapter_bottom.onClick {
+            rv_chapter_list.scrollToPosition(adapter.itemCount - 1)
         }
     }
 

app/src/main/res/layout-land/activity_book_info.xml

@@ -245,11 +245,21 @@
                 android:layout_height="match_parent"
                 android:background="?android:attr/selectableItemBackgroundBorderless"
                 android:contentDescription="@string/go_to_top"
-                android:padding="10dp"
-                android:src="@drawable/ic_exchange_order"
+                android:src="@drawable/ic_arrow_drop_up"
                 android:tooltipText="@string/go_to_top"
                 app:tint="@color/tv_text_default"
                 tools:ignore="UnusedAttribute" />
+
+            <androidx.appcompat.widget.AppCompatImageView
+                android:id="@+id/iv_chapter_bottom"
+                android:layout_width="36dp"
+                android:layout_height="match_parent"
+                android:background="?android:attr/selectableItemBackgroundBorderless"
+                android:contentDescription="@string/go_to_bottom"
+                android:src="@drawable/ic_arrow_drop_down"
+                android:tooltipText="@string/go_to_bottom"
+                app:tint="@color/tv_text_default"
+                tools:ignore="UnusedAttribute" />
         </LinearLayout>
 
     </LinearLayout>

app/src/main/res/layout/activity_book_info.xml

@@ -237,11 +237,21 @@
                 android:layout_height="match_parent"
                 android:background="?android:attr/selectableItemBackgroundBorderless"
                 android:contentDescription="@string/go_to_top"
-                android:padding="10dp"
-                android:src="@drawable/ic_exchange_order"
+                android:src="@drawable/ic_arrow_drop_up"
                 android:tooltipText="@string/go_to_top"
                 app:tint="@color/tv_text_default"
                 tools:ignore="UnusedAttribute" />
+
+            <androidx.appcompat.widget.AppCompatImageView
+                android:id="@+id/iv_chapter_bottom"
+                android:layout_width="36dp"
+                android:layout_height="match_parent"
+                android:background="?android:attr/selectableItemBackgroundBorderless"
+                android:contentDescription="@string/go_to_bottom"
+                android:src="@drawable/ic_arrow_drop_down"
+                android:tooltipText="@string/go_to_bottom"
+                app:tint="@color/tv_text_default"
+                tools:ignore="UnusedAttribute" />
         </LinearLayout>
 
     </LinearLayout>