Basic database with Json export

Question

1. I need to enter lots of data to my android application before it published. I need an application offline that like an excell table and after i entered my data it should give me json list file. (Please don't say csv to json.)

2. And secondly is there somebody who entered huge data into an application. How can i do it alternativly?

Thanks

I tried rowy but it is not working offline.

Answer 1

You can use Room for data to JSON needs: Export room database to json file

You can also preload data to Room: https://developer.android.com/training/data-storage/room/prepopulate