Add API for querying extended length APDU support. (fa98cf05) · Commits · e / os / android_frameworks_base

api/current.txt

+1 −0

Original line number	Diff line number	Diff line
		@@ -12899,6 +12899,7 @@ package android.nfc.tech {
		method public byte[] getHistoricalBytes();
		method public int getMaxTransceiveLength();
		method public int getTimeout();
		method public boolean isExtendedLengthApduSupported();
		method public void setTimeout(int);
		method public byte[] transceive(byte[]) throws java.io.IOException;
		}

+1 −0

Original line number	Diff line number	Diff line
		@@ -45,4 +45,5 @@ interface INfcTag
		void resetTimeouts();
		boolean canMakeReadOnly(int ndefType);
		int getMaxTransceiveLength(int technology);
		boolean getExtendedLengthApdusSupported();
		}

+23 −0

Original line number	Diff line number	Diff line
		@@ -179,4 +179,27 @@ public final class IsoDep extends BasicTagTechnology {
		public int getMaxTransceiveLength() {
		return getMaxTransceiveLengthInternal();
		}

		/**
		* <p>Standard APDUs have a 1-byte length field, allowing a maximum of
		* 255 payload bytes, which results in a maximum APDU length of 261 bytes.
		*
		* <p>Extended length APDUs have a 3-byte length field, allowing 65535
		* payload bytes.
		*
		* <p>Some NFC adapters, like the one used in the Nexus S and the Galaxy Nexus
		* do not support extended length APDUs. They are expected to be well-supported
		* in the future though. Use this method to check for extended length APDU
		* support.
		*
		* @return whether the NFC adapter on this device supports extended length APDUs.
		*/
		public boolean isExtendedLengthApduSupported() {
		try {
		return mTag.getTagService().getExtendedLengthApdusSupported();
		} catch (RemoteException e) {
		Log.e(TAG, "NFC service dead", e);
		return false;
		}
		}
		}