update RecyclerView from another activity onBackpressed

Question

I have a recyclerView on first Activity(reads data from DB) and insert data on it from second activity(Insert data into DB). Now I want to update that recyclerView when Back buttonPressed on second Activity(when back from second activity to first activity) now what should I do?

First try to do some search before asking question. https://stackoverflow.com/questions/5545217/back-button-and-refreshing-previous-activity — Shubham Vala, Jan 23 '20 at 08:14
Does this answer your question? [How to update RecyclerView Adapter Data?](https://stackoverflow.com/questions/31367599/how-to-update-recyclerview-adapter-data) — Mostafa Soliman, Jan 23 '20 at 08:16

score 2 · Accepted Answer · answered Jan 23 '20 at 08:39

2

Use LiveData and Room. Whenever room database updates, it'll give trigger onChanged to LiveData. Hence, If your activity is observing the room database. You can simply call adapter.notifyDataSetChanged() inside the observer.

answered Jan 23 '20 at 08:39

Sandesh Baliga

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update RecyclerView from another activity onBackpressed

1 Answers1