Android Open Source - Fall_Prevention_2013 Clear History

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Apache License

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Java Source Code

/*******************************************************************************
 * Licensed to UbiCollab.org under one or more contributor
 * license agreements.  See the NOTICE file distributed 
 * with this work for additional information regarding
 * copyright ownership. UbiCollab.org licenses this file
 * to you 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
 * /*from   w  ww.j av a 2  s  .  c om*/
 *     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 ntnu.stud.valens.demonstration.activity;

import ntnu.stud.valens.demonstration.R;
import ntnu.stud.valens.demonstration.connectivity.DatabaseHelper;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.preference.Preference;
import android.util.AttributeSet;
import android.widget.Toast;

/**
 * This class will Clear your personal data from the app.
 * This includes Name, Settings and Data stored by the program.
 *
 */
public class ClearHistory extends Preference {

  Context context;
  /**
   * This method creates an Object of ClearHistory 
   * @param context
   */
  public ClearHistory(Context context) {
    super(context);
    this.context = context;
  }
  /**
   * This method creates an Object of ClearHistory 
   * @param context
   * @param attr
   */
  public ClearHistory(Context context, AttributeSet attr) {
    super(context, attr);
    this.context = context;
  }
  /**
   * This method creates an object of ClearHistory
   * @param context
   * @param attr
   * @param defStyle
   */
  public ClearHistory(Context context, AttributeSet attr,
      int defStyle) {
    super(context, attr, defStyle);
    this.context = context;
  }
  /**
   * Deletes all local data from the database
   * TODO: Delete name and settings
   */
  @Override
  protected void onClick() {
    AlertDialog.Builder alert_box = new AlertDialog.Builder(context);
    String message = context.getResources().getString(R.string.preferences_clear_history_warning);
    alert_box.setMessage(message);
    alert_box.setPositiveButton(R.string.GENERAL_positive, new DialogInterface.OnClickListener() {
      @Override
      public void onClick(DialogInterface dialog, int which) {
        // Clear database data
        new DatabaseHelper(context).dbClearAllData();
        // Restart the program and show a message
        Toast.makeText(context, context.getResources().getString(R.string.preferences_data_cleared), 
            Toast.LENGTH_SHORT).show();
      }
    });
    alert_box.setNegativeButton(R.string.GENERAL_negative, new DialogInterface.OnClickListener() {
      @Override
      public void onClick(DialogInterface dialog, int which) {
        // Do nothing.
      }
    });
    alert_box.show();
  }

}

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