Android Open Source - geocamTalkAndroid U I Utils

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License

The source code is released under:

NASA OPEN SOURCE AGREEMENT VERSION 1.3 THIS OPEN SOURCE AGREEMENT ("AGREEMENT") DEFINES THE RIGHTS OF USE, REPRODUCTION, DISTRIBUTION, MODIFICATION AND REDISTRIBUTION OF CERTAIN COMPUTER SOFTWARE ORI...

Java Source Code

// __BEGIN_LICENSE__
// Copyright (C) 2008-2010 United States Government as represented by
// the Administrator of the National Aeronautics and Space Administration.
// All Rights Reserved.
// __END_LICENSE__
//w  w w  .  ja  va  2  s  .  c  om
package gov.nasa.arc.geocam.talk;

import gov.nasa.arc.geocam.talk.activity.GeoCamTalkActivity;
import gov.nasa.arc.geocam.talk.activity.GeoCamTalkCreateActivity;
import gov.nasa.arc.geocam.talk.activity.GeoCamTalkLogon;
import gov.nasa.arc.geocam.talk.activity.GeoCamTalkMapActivity;
import gov.nasa.arc.geocam.talk.activity.SettingsActivity;
import gov.nasa.arc.geocam.talk.bean.GeoCamTalkMessage;
import gov.nasa.arc.geocam.talk.exception.AuthenticationFailedException;
import gov.nasa.arc.geocam.talk.service.IAudioPlayer;
import gov.nasa.arc.geocam.talk.service.ISiteAuth;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

import org.apache.http.client.ClientProtocolException;

import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.widget.Toast;

/**
 * The Class UIUtils.  Provides an interface to complete global UI functions and begin new activities.
 */
public class UIUtils {
  
    /**
     * Display an exception at the log and to the user via {@link Toast}.
     *
     * @param context the context
     * @param e the e
     * @param additionalMessage the additional message
     */
    public static void displayException(Context context, Exception e, String additionalMessage)
    {
      Log.e("Talk", additionalMessage, e);
      StringBuilder sb = new StringBuilder();
      if(additionalMessage != null)
      {
        sb.append(additionalMessage + ": ");
      }
      if(e.getLocalizedMessage() != null){
          sb.append(e.getLocalizedMessage());        
      }
      Toast.makeText(context, sb.toString(), Toast.LENGTH_LONG).show();
    }
    
    /**
     * Show the {@link GeoCamTalkMapActivity} for a given message.
     *
     * @param context The current activity context
     * @param talkMessage The {@link GeoCamTalkMessage} that the map activity will display
     */
    public static void showMapView(Context context, GeoCamTalkMessage talkMessage) {
      final Intent intent = new Intent(context, GeoCamTalkMapActivity.class);
      intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
      intent.putExtra(context.getString(R.string.latitude), talkMessage.getLatitude());
      intent.putExtra(context.getString(R.string.longitude), talkMessage.getLongitude());
      intent.putExtra(context.getString(R.string.accuracy), talkMessage.getAccuracy());
      context.startActivity(intent);      
    }
    
    /**
     * Logout the currently logged in user.
     *
     * @param siteAuth A {@link ISiteAuth} instance which is managing authorization.
     * @throws ClientProtocolException the client protocol exception
     * @throws AuthenticationFailedException the authentication failed exception
     * @throws IOException Signals that an I/O exception has occurred.
     */
    public static void logout(ISiteAuth siteAuth)throws ClientProtocolException, AuthenticationFailedException, IOException
    {
      siteAuth.logoutAndUnregister();
    }

  /**
   * Invoke "home" action, returning to {@link GeoCamTalkActivity}.
   *
   * @param context The activity context to send the intent from.
   */
  public static void goHome(Context context) {
    final Intent intent = new Intent(context, GeoCamTalkActivity.class);
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    context.startActivity(intent);
  }

  /**
   * Go to the {@link GeoCamTalkLogon} activity.
   *
   * @param context The activity context to send the intent from.
   */
  public static void goToLogin(Context context) {
    final Intent intent = new Intent(context, GeoCamTalkLogon.class);
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    context.startActivity(intent);
  }

  /**
   * Go to the {@link GeoCamTalkCreateActivity} activity to create a new GeoCam Talk Message.
   *
   * @param context The activity context to send the intent from.
   */
  public static void createTalkMessage(Context context) {
    final Intent intent = new Intent(context, GeoCamTalkCreateActivity.class);
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    context.startActivity(intent);
  }

  /**
   * Play the audio of a {@link GeoCamTalkMessage} if available.
   *
   * @param context The activity context to send the intent from.
   * @param msg The {@link GeoCamTalkMessage} to play audio of.
   * @param player An instance of an {@link IAudioPlayer}
   * @param siteAuth The {@link ISiteAuth} to use to get attain audio from if not local
   * @throws ClientProtocolException the client protocol exception
   * @throws AuthenticationFailedException the authentication failed exception
   * @throws IOException Signals that an I/O exception has occurred.
   */
  public static void playAudio(Context context, GeoCamTalkMessage msg, IAudioPlayer player,
      ISiteAuth siteAuth) throws ClientProtocolException, AuthenticationFailedException,
      IOException {

    String audioUrl = msg.getAudioUrl();

    // No audio recorded with message
    if (msg.getAudio() == null && audioUrl == null) {
      return;
    }
    // We have audio, but not locally
    else if (msg.getAudio() == null && audioUrl != null) {
      String localFileName = siteAuth.getAudioFile(audioUrl, null);
      player.startPlaying(localFileName);
      File audioFile = new File(localFileName);
      int length = (int) audioFile.length();
      byte[] audioBytes = new byte[length];

      FileInputStream fis = new FileInputStream(audioFile);
      fis.read(audioBytes, 0, length);
      msg.setAudio(audioBytes);
    }
    player.startPlaying(msg.getAudio());
  }

  /**
   * Go to the {@link SettingsActivity} activity.
   *
   * @param context the context
   */
  public static void goToSettings(Context context) {
    final Intent intent = new Intent(context, SettingsActivity.class);
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    context.startActivity(intent);
  }
}

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