An Android app that asks the user for a departure airport, searches a pre-populated database to present a list of flights that depart from that airport, lets the user save favorite flights, and updates the database with Room.

Retrieve Data from a Room Database with 2 tables Airports and Favorites. Save Search value to user preferences.
When the user reopens the app, the search text is prepopulate from preferences

• Search Screen with an empty textField to search DB
• On Empty Search Text
  • we show a list of Saved Favorite Flights if saved flight are found
• On Search Text entering
  • we show search results, a list of airports
    • Clicking on an item (Airport), takes as to the Flight Screen
• Flight Screen
  • is a list of flights against all other Airports in DB
  • Clicking on a flight save it to Favorites

https://developer.android.com/codelabs/basic-android-kotlin-compose-flight-search?continue=https%3A%2F%2Fdeveloper.android.com%2Fcourses%2Fpathways%2Fandroid-basics-compose-unit-6-pathway-3%23codelab-https%3A%2F%2Fdeveloper.android.com%2Fcodelabs%2Fbasic-android-kotlin-compose-flight-search#3

ref: flight-search-app-android-kotlin-compose