"Android Services" are covered in their own section this section covers the Delphi actions to insert required service data into the project manifest.
Once you have your service project created you need to connect to it from your host application and this requires manifest entries
First build the service then in the host application select the Android target platform. On the Android target platform, right-click and select Add Android Service.
Note: This is fine for new projects built in the directory structure expected by Delphi but if you wish to rename a service or move the output or DCU files expect extra issues.
Some project samples require more data in the manifest than provided via the Delphi IDE process and edit the manifest template to achieve this.