Convert LiveData to MutableLiveData

Question

Apparently, Room is not able to handle MutableLiveData and we have to stick to LiveData as it returns the following error:

error: Not sure how to convert a Curso         


        

Answer 1

Call me crazy but AFAIK there is zero reason to use a MutableLiveData for the object that you received from the DAO.

The idea is that you can expose an object via LiveData>

@Dao
public interface ProfileDao {
    @Query("SELECT * FROM PROFILE")
    LiveData> getProfiles();
}

Now you can observe them:

profilesLiveData.observe(this, (profiles) -> {
    if(profiles == null) return;

    // you now have access to profiles, can even save them to the side and stuff
    this.profiles = profiles;
});

So if you want to make this live data "emit a new data and modify it", then you need to insert the profile into the database. The write will re-evaluate this query and it will be emitted once the new profile value is written to db.

dao.insert(profile); // this will make LiveData emit again

So there is no reason to use getValue/setValue, just write to your db.