android.nfc.cardemulation - Android SDK | Android Developers
Android APIs
Added in API level 19
package

android.nfc.cardemulation

Classes

CardEmulation This class can be used to query the state of NFC card emulation services. 
HostApduService

HostApduService is a convenience Service class that can be extended to emulate an NFC card inside an Android service component. 

OffHostApduService

OffHostApduService is a convenience Service class that can be extended to describe one or more NFC applications that are residing off-host, for example on an embedded secure element or a UICC.