Added in [API level 19](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

# android.nfc.cardemulation

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## Interfaces

|---|---|
| [CardEmulation.NfcEventCallback](https://developer.android.com/reference/android/nfc/cardemulation/CardEmulation.NfcEventCallback) | Callback interface for NFC-related events. |

## Classes

|---|---|
| [CardEmulation](https://developer.android.com/reference/android/nfc/cardemulation/CardEmulation) | This class can be used to query the state of NFC card emulation services. |
| [HostApduService](https://developer.android.com/reference/android/nfc/cardemulation/HostApduService) | HostApduService is a convenience `https://developer.android.com/reference/android/app/Service` class that can be extended to emulate an NFC card inside an Android service component. |
| [HostNfcFService](https://developer.android.com/reference/android/nfc/cardemulation/HostNfcFService) | HostNfcFService is a convenience `https://developer.android.com/reference/android/app/Service` class that can be extended to emulate an NFC-F card inside an Android service component. |
| [NfcFCardEmulation](https://developer.android.com/reference/android/nfc/cardemulation/NfcFCardEmulation) | This class can be used to query the state of NFC-F card emulation services. |
| [OffHostApduService](https://developer.android.com/reference/android/nfc/cardemulation/OffHostApduService) | OffHostApduService is a convenience `https://developer.android.com/reference/android/app/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. |
| [PollingFrame](https://developer.android.com/reference/android/nfc/cardemulation/PollingFrame) | Polling Frames represent data about individual frames of an NFC polling loop. |

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  ## Interfaces

  - [CardEmulation.NfcEventCallback](https://developer.android.com/reference/android/nfc/cardemulation/CardEmulation.NfcEventCallback)
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  ## Classes

  - [CardEmulation](https://developer.android.com/reference/android/nfc/cardemulation/CardEmulation)
  - [HostApduService](https://developer.android.com/reference/android/nfc/cardemulation/HostApduService)
  - [HostNfcFService](https://developer.android.com/reference/android/nfc/cardemulation/HostNfcFService)
  - [NfcFCardEmulation](https://developer.android.com/reference/android/nfc/cardemulation/NfcFCardEmulation)
  - [OffHostApduService](https://developer.android.com/reference/android/nfc/cardemulation/OffHostApduService)
  - [PollingFrame](https://developer.android.com/reference/android/nfc/cardemulation/PollingFrame)