优化

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

@@ -274,6 +274,7 @@ class ReadBookActivity : BaseReadBookActivity(),
             }
             R.id.menu_enable_replace -> ReadBook.book?.let {
                 it.setUseReplaceRule(!it.getUseReplaceRule())
+                ReadBook.saveRead()
                 menu?.findItem(R.id.menu_enable_replace)?.isChecked = it.getUseReplaceRule()
                 viewModel.replaceRuleChanged()
             }