Android Open Source - fco-alerts-app Notification Store

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License

The source code is released under:

MIT License

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Java Source Code

package uk.co.eleusis.android.fcoalerts;
//from w  w w  .  ja v  a  2 s.c  o  m
import android.content.Context;
import android.content.SharedPreferences;
import android.util.Log;

/**
 * Initially this was an SQLite DB but that's a bit of overkill for this feature.
 * 
 * We just need to store a list of the undismissed notifications, so we can display
 * them in the INBOX format. When dismissed, we remove them all.
 * 
 * So, we use our own SharedPreferences object, modelled on the way GCMRegistration
 * stores the registration ID. It uses the String type to store a concatenated version
 * of the notification title/desc for each outstanding notification, latest first,
 * separated by '<nsep/>'.
 * 
 * This only works if we can dismiss them all at the same time - this method isn't so
 * good for dismissing one or two.
 *   
 */
public class NotificationStore
{
    private static final String TAG = "NotificationStore";
    
    private static final String NOTIFICATIONS_KEY = "notificiations";
    private static final String SEP = "<nsep/>";
    
    private SharedPreferences prefs;
    
  public NotificationStore(Context context) 
  {
      prefs = context.getSharedPreferences(
              NotificationStore.class.getSimpleName(), Context.MODE_PRIVATE);
  }

  public String[] getNotificationStrings()
  {
      String[] nstrings = null;
      String notifsAsString = prefs.getString(NOTIFICATIONS_KEY, null);
      if (notifsAsString != null)
      {
          nstrings = notifsAsString.split(SEP);
      }
      return nstrings;
  }
  
  public void storeNotification(NotifiedAlert alert)
  {
      // remove 'Latest update' from description, if present:
      String description = alert.getDescription().trim();
      
      if (description.startsWith("Latest update: "))
      {
          description = description.substring("Latest update: ".length());
      }
      
      if (description.startsWith("Summary - "))
      {
          description = description.substring("Summary - ".length());
      }
      
      // convert to HTML string:
      String htmlString = new StringBuilder()
          .append("<b>")
          .append(alert.getTitle())
          .append("</b> ")
          .append(description)
          .toString();
      
      Log.d(TAG, "Storing htmlString "  + htmlString);
      
        String notifsAsString = prefs.getString(NOTIFICATIONS_KEY, null);
        if (notifsAsString == null)
        {
            notifsAsString = htmlString;
        }
        else
        {
            notifsAsString = htmlString + SEP + notifsAsString;
        }
        
        prefs.edit().putString(NOTIFICATIONS_KEY, notifsAsString).commit();
  }
  
  public void removeAllNotifications()
  {
      prefs.edit().remove(NOTIFICATIONS_KEY).commit();
  }
}

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