我开发一种阅读NFC标签细节的应用程序。在该应用程序我想给只有在NFC可用设备运行状态。

I developing a application which read the NFC Tag details.. In that application i want to give the condition to run only in NFC available devices..

先谢谢了...

推荐答案

如果您包括这在你的清单您的应用程序只能在有NFC设备上运行：

If you include this in your manifest your app will only be able to run on devices that have NFC:

<uses-feature android:name="android.hardware.nfc" android:required="true" />

NfcAdapter.getDefaultAdapter（本）也可以返回空具有NFC设备，但NFC功能上是由于某些原因在这种情况下，无法使用。

NfcAdapter.getDefaultAdapter(this) can also return null on a device which has NFC, but the NFC functionality is unavailable for some reason in that case.