package android.nfc;
import android.nfc.NdefMessage;
+import android.nfc.TransceiveResult;
/**
* @hide
byte[] getUid(int nativeHandle);
boolean isNdef(int nativeHandle);
boolean isPresent(int nativeHandle);
- byte[] transceive(int nativeHandle, in byte[] data, boolean raw);
+ TransceiveResult transceive(int nativeHandle, in byte[] data, boolean raw);
int getLastError(int nativeHandle);
--- /dev/null
+/*
+ * Copyright (C) 2011, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.nfc;
+
+import java.io.IOException;
+
+public class TagLostException extends IOException {
+ public TagLostException() {
+ super();
+ }
+
+ public TagLostException(String message) {
+ super(message);
+ }
+}
--- /dev/null
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.nfc;
+
+parcelable TransceiveResult;
--- /dev/null
+/*
+ * Copyright (C) 2011, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.nfc;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+/**
+ * Class used to pipe transceive result from the NFC service.
+ *
+ * @hide
+ */
+public final class TransceiveResult implements Parcelable {
+ private final boolean mTagLost;
+ private final boolean mSuccess;
+ private final byte[] mResponseData;
+
+ public TransceiveResult(final boolean success, final boolean tagIsLost,
+ final byte[] data) {
+ mSuccess = success;
+ mTagLost = tagIsLost;
+ mResponseData = data;
+ }
+
+ public boolean isSuccessful() {
+ return mSuccess;
+ }
+
+ public boolean isTagLost() {
+ return mTagLost;
+ }
+
+ public byte[] getResponseData() {
+ return mResponseData;
+ }
+
+ @Override
+ public int describeContents() {
+ return 0;
+ }
+
+ @Override
+ public void writeToParcel(Parcel dest, int flags) {
+ dest.writeInt(mSuccess ? 1 : 0);
+ dest.writeInt(mTagLost ? 1 : 0);
+ if (mSuccess) {
+ dest.writeInt(mResponseData.length);
+ dest.writeByteArray(mResponseData);
+ }
+ }
+
+ public static final Parcelable.Creator<TransceiveResult> CREATOR =
+ new Parcelable.Creator<TransceiveResult>() {
+ @Override
+ public TransceiveResult createFromParcel(Parcel in) {
+ boolean success = (in.readInt() == 1) ? true : false;
+ boolean tagLost = (in.readInt() == 1) ? true : false;
+ byte[] responseData;
+
+ if (success) {
+ int responseLength = in.readInt();
+ responseData = new byte[responseLength];
+ in.readByteArray(responseData);
+ } else {
+ responseData = null;
+ }
+ return new TransceiveResult(success, tagLost, responseData);
+ }
+
+ @Override
+ public TransceiveResult[] newArray(int size) {
+ return new TransceiveResult[size];
+ }
+ };
+
+}
import android.nfc.INfcAdapter;
import android.nfc.INfcTag;
import android.nfc.NfcAdapter;
+import android.nfc.TransceiveResult;
import android.nfc.Tag;
import android.nfc.ErrorCodes;
+import android.nfc.TagLostException;
import android.os.RemoteException;
import android.util.Log;
checkConnected();
try {
- byte[] response = mTagService.transceive(mTag.getServiceHandle(), data, raw);
- if (response == null) {
+ TransceiveResult result = mTagService.transceive(mTag.getServiceHandle(), data, raw);
+ if (result == null) {
throw new IOException("transceive failed");
+ } else {
+ if (result.isSuccessful()) {
+ return result.getResponseData();
+ } else {
+ if (result.isTagLost()) {
+ throw new TagLostException("Tag was lost.");
+ }
+ else {
+ throw new IOException("transceive failed");
+ }
+ }
}
- return response;
} catch (RemoteException e) {
Log.e(TAG, "NFC service dead", e);
throw new IOException("NFC service died");
package android.nfc.technology;
import android.nfc.NfcAdapter;
+import android.nfc.TagLostException;
import android.nfc.Tag;
import android.os.Bundle;
import android.os.RemoteException;
* Authenticate the entire sector that the given block resides in.
* <p>This requires a that the tag be connected.
*/
- public boolean authenticateBlock(int block, byte[] key, boolean keyA) {
+ public boolean authenticateBlock(int block, byte[] key, boolean keyA) throws TagLostException {
checkConnected();
byte[] cmd = new byte[12];
if ((transceive(cmd, false) != null)) {
return true;
}
+ } catch (TagLostException e) {
+ throw e;
} catch (IOException e) {
// No need to deal with, will return false anyway
}
* Authenticate for a given sector.
* <p>This requires a that the tag be connected.
*/
- public boolean authenticateSector(int sector, byte[] key, boolean keyA) {
+ public boolean authenticateSector(int sector, byte[] key, boolean keyA) throws TagLostException {
checkConnected();
byte addr = (byte) ((firstBlockInSector(sector)) & 0xff);