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V2rayNG/app/src/main/res/menu/menu_scanner.xml

@@ -1,6 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/scan_code"
+        android:icon="@drawable/ic_scan_black_24dp"
+        android:title=""
+        app:showAsAction="always" />
     <item
         android:id="@+id/select_photo"
         android:icon="@drawable/ic_image_photo"