org.ndeftools.util.activity.NfcReaderActivity Maven / Gradle / Ivy
The newest version!
/***************************************************************************
*
* This file is part of the 'NDEF Tools for Android' project at
* http://code.google.com/p/ndef-tools-for-android/
*
* 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 org.ndeftools.util.activity;
import org.ndeftools.Message;
import org.ndeftools.Record;
import org.ndeftools.UnsupportedRecord;
import android.app.Activity;
import android.content.Intent;
import android.nfc.FormatException;
import android.nfc.NdefMessage;
import android.nfc.NdefRecord;
import android.nfc.NfcAdapter;
import android.os.Parcelable;
import android.util.Log;
/**
*
* Abstract {@link Activity} for reading NFC messages - both via a tag and via Beam (push)
*
* @author Thomas Rorvik Skjolberg
*
*/
public abstract class NfcReaderActivity extends NfcDetectorActivity {
private static final String TAG = NfcReaderActivity.class.getName();
@Override
public void nfcIntentDetected(Intent intent, String action) {
Log.d(TAG, "nfcIntentDetected: " + action);
Parcelable[] messages = intent.getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES);
if (messages != null) {
NdefMessage[] ndefMessages = new NdefMessage[messages.length];
for (int i = 0; i < messages.length; i++) {
ndefMessages[i] = (NdefMessage) messages[i];
}
if(ndefMessages.length > 0) {
// read as much as possible
Message message = new Message();
for (int i = 0; i < messages.length; i++) {
NdefMessage ndefMessage = (NdefMessage) messages[i];
for(NdefRecord ndefRecord : ndefMessage.getRecords()) {
try {
message.add(Record.parse(ndefRecord));
} catch (FormatException e) {
// if the record is unsupported or corrupted, keep as unsupported record
message.add(UnsupportedRecord.parse(ndefRecord));
}
}
}
readNdefMessage(message);
} else {
readEmptyNdefMessage();
}
} else {
readNonNdefMessage();
}
}
/**
* An NDEF message was read and parsed
*
* @param message the message
*/
protected abstract void readNdefMessage(Message message);
/**
* An empty NDEF message was read.
*
*/
protected abstract void readEmptyNdefMessage();
/**
*
* Something was read via NFC, but it was not an NDEF message.
*
* Handling this situation is out of scope of this project.
*
*/
protected abstract void readNonNdefMessage();
}