I am using OTG RFID Reader for Android. It's working fine in Edittext or Input text while swapping card.
Basically Micro USB RFID Reader which is Keyboard Interface.
So I wanted to know can i use this without Edittext.
I am currently doing Edittext using 1dp width and 1 dp for height, and transparent background as well as text color.
I am looking for some kind of service solution which give me data when io system recive data. That means before show to edit text.
You can capture any key event without having an EditText. You need to implement dispatchKeyEvent in your activity to capture each KeyEvent. You can then send them to a service in the background to be processed (for example send out an event when a full RFID is scanned or when the number of scanned events reach a certain number or however else you want to use them).