how to pass data from one fragment to previous fragment?

Question

I am going FragmentA->FragmentB. Now From FragmentB I want to pass data to FragmentA.So How can I do that??

Currently am going FragmentB->FragmentA with getCus

Answer 1

If using Kotlin, and android navigation architecture, you can use like this, from Navigation 2.3.0-alpha02 release.

Set result on Fragment B:

findNavController().previousBackStackEntry?.savedStateHandle?.set("key", result)

Observe the result on Fragment A, with same key:

    findNavController().currentBackStackEntry?.savedStateHandle?.getLiveData("key")?.observe(
    viewLifecycleOwner) {result ->
    // Do something with the result.
}