I have a fragment whose behavior depends on the re...

# android

[Ellen Spertus]

I have a fragment whose behavior depends on the result of looking up the launching `Intent`’s extras in a RoomDatabase . I can’t access the database (or even the repository) directly from the fragment’s onStart() method, since database access is not allowed on the UI thread. What’s the right way for onStart() to initiate a database query on the IO thread and then a callback on the UI thread?

[Ellen Spertus]

Is this the right pattern?

override fun onStart() {
    super.onStart()
    viewModel = buildModel()
    viewModel.viewModelScope.launch {
        checkForNickname()
    }
}

private suspend fun checkForNickname() {
    val entity = viewModel.getContact() // suspend fun
    withContext(Dispatchers.Main) {
        // do something with entity
    }
}

[rkeazor]

This channel is for Kotlin related topics, this seems outside of that scope

[Ellen Spertus]

@rkeazor My question does involve Kotlin. See my code sample. There are other threads on this channel that do not mention Kotlin. Perhaps you meant to leave your comment on one of those.