优化

app/src/main/java/io/legado/app/ui/book/read/page/ReadView.kt

@@ -506,6 +506,9 @@ class ReadView(context: Context, attrs: AttributeSet) :
         callBack.screenOffTimerStart()
     }
 
+    /**
+     * 更新滑动距离
+     */
     fun upPageSlopSquare() {
         val pageTouchSlop = AppConfig.pageTouchSlop
         this.pageSlopSquare = if (pageTouchSlop == 0) slopSquare else pageTouchSlop

app/src/main/res/xml/pref_config_read.xml

@@ -96,7 +96,8 @@
         android:key="pageTouchSlop"
         android:summary="@string/page_touch_slop_summary"
         android:title="@string/page_touch_slop_title"
-        app:iconSpaceReserved="false" />
+        app:iconSpaceReserved="false"
+        app:isBottomBackground="true" />
 
     <io.legado.app.lib.prefs.SwitchPreference
         android:defaultValue="true"