This article explains how you can add custom code to your mobile app, generated by the Telerik Platform Views service (formerly Screen Builder), so that these changes are not overwritten the next time you edit the app in the Views service.
When you generate an app with the Views service, it's common to enhance and modify the generated code in AppBuilder. If you want to do that but want to return to the Views service to edit the app again, e.g. add a new or edit an existing view without losing the custom code changes, you should follow certain rules. In every file generated by the Views service there is a block comment outlining an area dedicated for such custom code changes.