优化

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

@@ -206,6 +206,9 @@ class ReadBookActivity : BaseReadBookActivity(),
                 autoPageStop()
                 return@addCallback
             }
+            if (getPrefBoolean("disableReturnKey") && !menuLayoutIsVisible) {
+                return@addCallback
+            }
             finish()
         }
     }

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

@@ -149,6 +149,13 @@
         app:iconSpaceReserved="false"
         app:isBottomBackground="true" />
 
+    <io.legado.app.lib.prefs.SwitchPreference
+        android:defaultValue="false"
+        android:key="disableReturnKey"
+        android:title="@string/disable_return_key"
+        app:iconSpaceReserved="false"
+        app:isBottomBackground="true" />
+
     <io.legado.app.lib.prefs.Preference
         android:key="customPageKey"
         android:title="@string/custom_page_key"