use id to retain scroll state

Signed-off-by: parneet-guraya <gurayaparneet@gmail.com>

app/src/main/res/layout/activity_settings.xml

@@ -27,6 +27,7 @@
 
 
     <ScrollView
+        android:id="@+id/scroll_view"
         android:layout_width="match_parent"
         android:layout_height="wrap_content">