Returning a value after callback in Kotlin

Question

How can I return a value after a callback in kotlin, I tried using Thread.sleep but it doesn\'t work

   fun searchColorFromAPI(): Colors {
    val service: Retro         


        

Answer 1

1. You can use live data ,that gets updated once the callback receives ,the same live data is observed by the caller fragment/activity

2. You can use coroutines to return a value from function which has asyn calls in it.

3. You can use interface callbacks to activity/ fragment to trigger the updates received from retrofit calls.