What we are currently working on is a problem between NFC and DB, saving and loading, or protocol.
To be more specific, use server <-> mobile phone <-> NFC (Object) to store the value between the server and the mobile phone in the server
It's to get the value from the server to the NFC. ex)Charge 10,000 won, 20,000 won, and 30,000 won to pay.
What's not working right now is saving and loading between servers <-> cell phones. The values for 10,000 won, 20,000 won, and 30,000 won are stored in DB, and what is shown in the book is seen as transmitting and receiving data using an internal server. If so, can I solve the above problem for the project I'm working on?
If it doesn't work out, I'd like to know if there's another way. And if there is any material or site that can be referenced, I will actively review it.
payment
Simply put, it seems that you are trying to save information by sending it to DB from your phone regardless of NFC.
I don't know what book you're looking at, but if you're going to implement this process, you're usually going to implement a webser, connect that server to db, and then the server stores it in db.
If the db you post in the question is a local db (such as sqlite) that runs on your phone, it is not suitable for implementing the desired functionality.
First, build a server and implement the ability to communicate with it.
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