I have a list with a few records. Every record has a city, country, date and id (its primary key). In dao, then repository I have function which accepts id. Finally display list it’s fine, but problem is when I click the record and display modal with this data. Id records is incorrect and the city name, country name etc. is incorrect.

How can i can implement sticky headers like in Contacts?
I saw this implementation, but maybe there is a more concise solution?