feat: 优化代码

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

@@ -31,7 +31,6 @@ import io.legado.app.model.localBook.AnalyzeTxtFile
 import io.legado.app.ui.widget.recycler.VerticalDivider
 import io.legado.app.utils.applyTint
 import kotlinx.android.synthetic.main.dialog_toc_regex.*
-import kotlinx.android.synthetic.main.dialog_toc_regex_edit.*
 import kotlinx.android.synthetic.main.dialog_toc_regex_edit.view.*
 import kotlinx.android.synthetic.main.item_toc_regex.view.*
 import kotlinx.coroutines.Dispatchers.IO
@@ -150,7 +149,7 @@ class TocRegexDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
                     }
             }
             okButton {
-                rootView?.let {
+                rootView?.apply {
                     tocRule.name = tv_rule_name.text.toString()
                     tocRule.rule = tv_rule_regex.text.toString()
                     saveRule(tocRule, rule)