Not really sure what you are asking for, but here are two samples. One if for an Android NFC reader app and one is for an Android HCE app.
https://github.com/googlesamples/android-CardReader
https://github.com/googlesamples/android-CardEmulation
Please clarify your question if I did not understand you correctly.
CardReader
This sample demonstrates how to implement a low-level NFC card reader, for reading cards that do not contain NDEF or Android Beam data. This sample is designed to read the virtual loyalty card implemented in the CardEmulation sample.
In particular, this sample demonstrates how to disable Android Beam, select which AIDs the reader is interested in, and establish communication with the card. See Host-based Card Emulation for more information on the HCE APIs.
CardEmulation
This sample demonstrates how to emulate an NFC card, using the Host Card Emulation feature added in Android 4.4. This sample makes the device appear as a loyalty card whenever the screen is on and the user taps their device on an appropriately configured NFC reader.
The CardReader sample can be used to read the loyalty card implemented in this sample.