详情页下拉刷新 close #2912

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

@@ -18,7 +18,7 @@
         android:id="@+id/refresh_layout"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        app:layout_constraintTop_toBottomOf="parent">
+        app:layout_constraintTop_toTopOf="parent">
 
         <LinearLayout
             android:id="@+id/vw_bg"