/*
* Copyright 2014 Google Inc. All rights reserved.
*
* 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 com.google.samples.apps.iosched.util;
import com.google.samples.apps.iosched.provider.ScheduleContract;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.nfc.NdefMessage;
import android.nfc.NdefRecord;
import android.nfc.NfcAdapter;
import android.os.Build;
import android.os.Parcelable;
/**
* Android Beam helper methods.
*/
public class BeamUtils {
/**
* Sets this activity's Android Beam message to one representing the given session.
*/
public static void setBeamSessionUri(Activity activity, Uri sessionUri) {
NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(activity);
if (nfcAdapter == null) {
// No NFC :-(
return;
}
nfcAdapter.setNdefPushMessage(new NdefMessage(
new NdefRecord[]{
new NdefRecord(NdefRecord.TNF_MIME_MEDIA,
ScheduleContract.Sessions.CONTENT_ITEM_TYPE.getBytes(),
new byte[0],
sessionUri.toString().getBytes())
}), activity);
}
/**
* Checks to see if the activity's intent ({@link android.app.Activity#getIntent()}) is
* an NFC intent that the app recognizes. If it is, then parse the NFC message and set the
* activity's intent (using {@link Activity#setIntent(android.content.Intent)}) to something
* the app can recognize (i.e. a normal {@link Intent#ACTION_VIEW} intent).
*/
public static void tryUpdateIntentFromBeam(Activity activity) {
Intent originalIntent = activity.getIntent();
if (NfcAdapter.ACTION_NDEF_DISCOVERED.equals(originalIntent.getAction())) {
Parcelable[] rawMsgs = originalIntent.getParcelableArrayExtra(
NfcAdapter.EXTRA_NDEF_MESSAGES);
NdefMessage msg = (NdefMessage) rawMsgs[0];
// Record 0 contains the MIME type, record 1 is the AAR, if present.
// In iosched, AARs are not present.
NdefRecord mimeRecord = msg.getRecords()[0];
if (ScheduleContract.Sessions.CONTENT_ITEM_TYPE.equals(
new String(mimeRecord.getType()))) {
// Re-set the activity's intent to one that represents session details.
Intent sessionDetailIntent = new Intent(Intent.ACTION_VIEW,
Uri.parse(new String(mimeRecord.getPayload())));
activity.setIntent(sessionDetailIntent);
}
}
}
}