how can i hide my firebase Configuration to avoid hacking my database by reverse engineering my app and take my Configuration
i must put write auth to user to enter they orders in Firebase database
If the app has the credentials, a user can extract the credentials. No way around it.
What @Sujan12 said.
I’d rather think about changing the way you do your database access. Instead of taking your current approach, how about registering your users on Firebase and then set up some permissions for them to insert data into your database?
Storing any crucial authentication information in your app should be avoided.