Android Open Source - CSCI567---Workspace Default Nfc Beam Writer Activity

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License

The source code is released under:

MIT License

Java Source Code

/***************************************************************************
 * /*from w w w.  ja v a2s.  c  om*/
 * 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.boilerplate;

import java.nio.charset.Charset;

import org.ndeftools.Message;
import org.ndeftools.externaltype.GenericExternalTypeRecord;
import org.ndeftools.util.activity.NfcBeamWriterActivity;
import org.ndeftools.wellknown.TextRecord;

import android.annotation.TargetApi;
import android.content.Context;
import android.nfc.NdefMessage;
import android.nfc.NfcEvent;
import android.os.Build;
import android.os.Bundle;
import android.os.Vibrator;
import android.util.Log;
import android.view.Gravity;
import android.widget.Toast;

/**
 * 
 * Activity demonstrating the default implementation of the abstract beam activity. 
 * 
 * The activity uses a simple layout and displays some toast messages for various events.
 * 
 * @author Thomas Rorvik Skjolberg
 *
 */

@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
public class DefaultNfcBeamWriterActivity extends NfcBeamWriterActivity {

  private static final String TAG = DefaultNfcBeamWriterActivity.class.getName();

  protected Message message;
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    
    setContentView(R.layout.beamer);
    
    setDetecting(true);
    
    startPushing();
  }

  /**
   * 
   * Implementation of {@link CreateNdefMessageCallback} interface.
   * 
   * This method is called when another device is within reach (communication is to take place).
   */

  @Override
  public NdefMessage createNdefMessage(NfcEvent event) {
    Log.d(TAG, "Create message to be beamed");
    
    // create message to be pushed, for example
    Message message = new Message();
    // add text record
    message.add(new TextRecord("This is my beam text record"));
    // add 'my' external type record
    message.add(new GenericExternalTypeRecord("my.domain", "atype", "My data".getBytes(Charset.forName("UTF-8"))));
          
    // encode to NdefMessage, will be pushed via beam (now!) (unless there is a collision)
    return message.getNdefMessage();
  }
  
  /**
   * 
   * Implementation of {@link OnNdefPushCompleteCallback} interface.
   * 
   * This method is called after a successful transfer (push) of a message from this device to another.
   */

  @Override
  protected void onNdefPushCompleteMessage() {
    // make toast
    toast(R.string.nfcBeamed);
    
    // vibrate
    Vibrator vibe = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE) ;
    vibe.vibrate(500);    
  }


  public void toast(int id) {
    toast(getString(id));
  }
  
  public void toast(String message) {
    Toast toast = Toast.makeText(this, message, Toast.LENGTH_LONG);
    toast.setGravity(Gravity.CENTER_HORIZONTAL|Gravity.CENTER_VERTICAL, 0, 0);
    toast.show();
  }
  
    /**
     * 
     * NFC was found and enabled in settings, and push is enabled too.
     * 
     */

  @Override
  protected void onNfcPushStateEnabled() {
    toast(getString(R.string.nfcBeamAvailableEnabled));
  }

    /**
     * 
     * NFC was found and enabled in settings, but push is disabled
     * 
     */


  @Override
  protected void onNfcPushStateDisabled() {
    toast(getString(R.string.nfcBeamAvailableDisabled));
  }

  /**
     * 
     * NFC beam setting changed since last check. For example, the user enabled beam in the wireless settings.
     * 
     */
  
  @Override
  protected void onNfcPushStateChange(boolean enabled) {
    if(enabled) {
      toast(getString(R.string.nfcBeamAvailableEnabled));
    } else {
      toast(getString(R.string.nfcBeamAvailableDisabled));
    }
  }

   /**
     * 
     * NFC feature was found and is currently enabled
     * 
     */
    
  @Override
  protected void onNfcStateEnabled() {
    toast(getString(R.string.nfcAvailableEnabled));
  }

    /**
     * 
     * NFC feature was found but is currently disabled
     * 
     */

  @Override
  protected void onNfcStateDisabled() {
    toast(getString(R.string.nfcAvailableDisabled));
  }

  /**
     * 
     * NFC setting changed since last check. For example, the user enabled NFC in the wireless settings.
     * 
     */
  
  @Override
  protected void onNfcStateChange(boolean enabled) {
    if(enabled) {
      toast(getString(R.string.nfcAvailableEnabled));
    } else {
      toast(getString(R.string.nfcAvailableDisabled));
    }
  }
  
  /**
   * 
   * This device does not have NFC hardware
   * 
   */
  
  @Override
  protected void onNfcFeatureNotFound() {
    toast(getString(R.string.noNfcMessage));
  }
  
  /**
   * An NDEF message was read and parsed
   * 
   * @param message the message
   */
  
  @Override
  protected void readNdefMessage(Message message) {
    if(message.size() > 1) {
          toast(getString(R.string.readMultipleRecordNDEFMessage));
    } else {
          toast(getString(R.string.readSingleRecordNDEFMessage));
    }    
  }

  /**
   * An empty NDEF message was read.
   * 
   */
  
  @Override
  protected void readEmptyNdefMessage() {
     toast(getString(R.string.readEmptyMessage));
  }

  /**
   * 
   * Something was read via NFC, but it was not an NDEF message. 
   * 
   * Handling this situation is out of scope of this project.
   * 
   */

  @Override
  protected void readNonNdefMessage() {
    toast(getString(R.string.readNonNDEFMessage));
  }
  
}

Java Source Code List

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