In our TeaViewModel class, that extends ViewModel , we have such method: public LiveData getTea() { return mTea; } An observer in our Activity (type of mViewModel variable in example is ) is set in this way: mViewModel.getTea().observe(this, this::displayTea); What will be a correct displayTea method definition? A) private void displayTea() B) private void displayTea(Tea tea) C) private void displayTea(LiveData) D) private void displayTea(LiveData)

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Quizplus · Accepted Answer

The displayTea method should accept a Tea object as a parameter because the observer is observing LiveData<Tea> and will receive a Tea object when the data changes.

In Our TeaViewModel Class, That Extends ViewModel , We Have