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/*
* Copyright (C) 2010 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.technology;
import android.nfc.ErrorCodes;
import android.nfc.FormatException;
import android.nfc.NdefMessage;
import android.nfc.NfcAdapter;
import android.nfc.Tag;
import android.os.Bundle;
import android.os.RemoteException;
import android.util.Log;
import java.io.IOException;
/**
* An interface to a {@link Tag} allowing to format the tag as NDEF.
*
* <p>You can acquire this kind of interface with {@link NfcAdapter#getTechnology}.
*
* <p class="note"><strong>Note:</strong>
* Use of this class requires the {@link android.Manifest.permission#NFC}
* permission.
*/
public final class NdefFormatable extends BasicTagTechnology {
private static final String TAG = "NFC";
/**
* Internal constructor, to be used by NfcAdapter
* @hide
*/
public NdefFormatable(NfcAdapter adapter, Tag tag, int tech, Bundle extras) throws RemoteException {
super(adapter, tag, tech);
}
/**
* Formats a tag as NDEF, if possible. You may supply a first
* NdefMessage to be written on the tag.
*/
public void format(NdefMessage firstMessage) throws IOException, FormatException {
checkConnected();
try {
byte[] DEFAULT_KEY = {(byte)0xFF,(byte)0xFF,(byte)0xFF,
(byte)0xFF,(byte)0xFF,(byte)0xFF};
int serviceHandle = mTag.getServiceHandle();
int errorCode = mTagService.formatNdef(serviceHandle, DEFAULT_KEY);
switch (errorCode) {
case ErrorCodes.SUCCESS:
break;
case ErrorCodes.ERROR_IO:
throw new IOException();
case ErrorCodes.ERROR_INVALID_PARAM:
throw new FormatException();
default:
// Should not happen
throw new IOException();
}
// Now check and see if the format worked
if (mTagService.isNdef(serviceHandle)) {
errorCode = mTagService.ndefWrite(serviceHandle, firstMessage);
switch (errorCode) {
case ErrorCodes.SUCCESS:
break;
case ErrorCodes.ERROR_IO:
throw new IOException();
case ErrorCodes.ERROR_INVALID_PARAM:
throw new FormatException();
default:
// Should not happen
throw new IOException();
}
} else {
throw new IOException();
}
} catch (RemoteException e) {
Log.e(TAG, "NFC service dead", e);
}
}
}
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