Android Open Source - RateBeer-Mobile Better R B Task

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License

The source code is released under:

GNU General Public License

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Java Source Code

/*
 * Copyright 2010, Jesper Fussing Mrk/*from www. j  ava  2s  .  c  o m*/
 *
 * This file is part of Ratebeer Mobile for Android.
 *
 * Ratebeer Mobile is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Ratebeer Mobile is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Ratebeer Mobile.  If not, see <http://www.gnu.org/licenses/>.
 */
package dk.moerks.ratebeermobile.task;

import android.content.Context;

import com.github.droidfu.concurrent.BetterAsyncTask;

import dk.moerks.ratebeermobile.R;
import dk.moerks.ratebeermobile.activity.BetterRBActivity;
import dk.moerks.ratebeermobile.exceptions.RBException;

public abstract class BetterRBTask<ParameterT, ReturnT> extends BetterAsyncTask<ParameterT, Void, ReturnT> {
  
  private int progressMessage;
  
  public BetterRBTask(BetterRBActivity activity, int progressMessage) {
    super(activity.getContext());
    this.progressMessage = progressMessage;
  }

  private BetterRBActivity getActivity(Context context) {
    return (BetterRBActivity) context;
  }
  
  @Override
  protected final void before(Context context) {
    // Show a progress indicator text in the application title bar
    getActivity(context).setTitle(context.getText(progressMessage).toString());
    getActivity(context).hasRunningTask(true);
  }
  
  /**
   * Will publish the error to the activity, which will show at least a Toast. May 
   * be overridden to extend this behavior, like disabling functions based on the 
   * failure.
   * @param context The original activity that started the task
   * @param error The error that was thrown by the task
   */
  @Override
  protected void handleError(Context context, Exception error) {
    // Always let the activity report any errors
    getActivity(context).setTitle(context.getText(R.string.app_name).toString());
    getActivity(context).hasRunningTask(false);
    getActivity(context).reportError((RBException) error);
  }

  @Override
  protected final void after(Context context, ReturnT result) {
    // Show a progress indicator text in the application title bar
    getActivity(context).setTitle(context.getText(R.string.app_name).toString());
    getActivity(context).hasRunningTask(false);
    afterTask(getActivity(context), result);
  }
  
  /**
   * Should implement the actual showing of the task results, such as showing the 
   * returned/parsed list of search results. 
   * @param activity The original RB activity that started the task
   * @param result The task results
   */
  protected abstract void afterTask(BetterRBActivity activity, ReturnT result);
  
}

Java Source Code List