Debounced SearchView

Extensions.kt

@ExperimentalCoroutinesApi
fun SearchView.doOnQueryTextChanged(): Flow<CharSequence?> {
    return callbackFlow<CharSequence?> {
        val listener = object : SearchView.OnQueryTextListener {
            override fun onQueryTextSubmit(query: String?) = false

            override fun onQueryTextChange(newText: String?): Boolean {
                offer(newText)
                return false
            }
        }
        setOnQueryTextListener(listener)
        awaitClose { setOnQueryTextListener(null) }

    }.onStart { emit(query) }
}

Usage:

searchView.doOnQueryTextChanged()
            .distinctUntilChanged()
            .debounce(300L)
            .onEach { //Do search here }
            .launchIn(lifecycleScope)