在 onPause() 期间使用协程保存数据（避免 ViewModel 取消和全局协程范围）

Question

Upon saving some data(to room) during onPause() with

this.viewModelScope.launch(Dispatchers.IO){ repo.updateNote(id, text) }

I noticed that save does not happen most of the time, because viewModelScope is cancelled if user is navigating away from the fragment.

Since using some type of global scope seems to be frowned upon for various reasons, is there an elegant way to Fire-And-Forget this db-save without tying it to ViewModelScope?

I could create a service for this but it feels like an ugly hack, I could also use runBlocking which works, but can potentially hang the fragment, I'm looking for an elegant way to do this with coroutines.

Answer 1

Fire and forget is exactly what GlobalScope is for: things that shouldn't be cancelled, so just use that.

GlobalScope.launch(Dispatchers.IO){ repo.updateNote(id, text) }