Why does my activity doesn't see an observed object change?

Question

I\'m new to Android development and i am trying to understand Live Data with MVVM architecture. I am trying to make the main activity recognize when there is a change in an obje

Answer 1

Solution by OP.

As Neha Rathore suggested this is the solution that works for me:

in the view Model:

public void login(String userName , String hashedPassword) {
    usersRepository.login(userName, hashedPassword, new Callback() {
        @Override
        public void onResponse(Call call, Response response) {
            loggedInUser.setValue(response.body());
        }

        @Override
        public void onFailure(Call call, Throwable t) {
            loggedInUser.setValue(null);
        }
    });
}

and in the Repository:

public void login(String username, String hashedPassword,@Nullable final Callback callback){
    final MutableLiveData loggedInUser = new MutableLiveData<>();
    User user = new User(username,hashedPassword);

    usersRepositoryApi.login(user).enqueue(new Callback() {
        @Override
        public void onResponse(Call call, Response response) {
            if (response.isSuccessful()) {
                callback.onResponse(call,response);
            }
        }

        @Override
        public void onFailure(Call call, Throwable t) {
            callback.onFailure(call,t);
        }
    });
}