what are the correct methods to Observe MutableLiveData > ? Android

Question

I am working on a RecyclerView that retrieves some of the data from an Object, every time a new object is created that object will be added into SQLiteDatabase and then to my ViewModel MutableLiveData<ArrayList>. so my question is how can i set a method in my fragment that observes the changed array list of objects so that my recyclerview will automatically updated.

for MutableLiveData i have used the below method to Observe but its not working for ArrayList of objects in my case.

//this is an example

ViewModel.getChangedData().observe(requireActivity(),item->{
            textview.setText(item);

please help, i am a beginner in this. i am using Java.

thanks in advance

Can you post your code of your viewmodel and also the fragment that you are observing it in — Rahul Agrawal, Oct 19 '21 at 12:06
Please provide enough code so others can better understand or reproduce the problem. — Community, Oct 19 '21 at 12:18
Guys i have figured it out.. i needed to do this candidates = myViewModel.getCandidates().getValue(); — two, Oct 19 '21 at 12:39

score 0 · Answer 1 · edited Oct 19 '21 at 18:26

0

Guys i have figured it out.. i needed to do this

candidates = myViewModel.getCandidates().getValue();
instead i was doing,  candidates = myViewModel.getCandidates();

candidates is ArrayList in this case

edited Oct 19 '21 at 18:26

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answered Oct 19 '21 at 12:43

two

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what are the correct methods to Observe MutableLiveData > ? Android

1 Answers1