Android Open Source - android-flash-cards File To Db Conversion

From Project

Back to project page android-flash-cards.
License

The source code is released under:
Apache License
If you think the Android project android-flash-cards listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.
Java Source Code

/*
 * Copyright 2011, 2012 Thomas Amsler/*ww  w  . ja v  a 2s. com*/
 *
 * 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.thomasamsler.android.flashcards.conversion;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

import org.thomasamsler.android.flashcards.AppConstants;
import org.thomasamsler.android.flashcards.MainApplication;
import org.thomasamsler.android.flashcards.R;
import org.thomasamsler.android.flashcards.db.DataSource;
import org.thomasamsler.android.flashcards.model.Card;
import org.thomasamsler.android.flashcards.model.CardSet;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.os.AsyncTask;
import android.util.Log;

public class FileToDbConversion implements AppConstants {

  private Context mContext;
  private DataSource mDataSource;
  private ProgressDialog mDialog;

  public FileToDbConversion() { }

  public void convert(Context context, DataSource dataSource) {

    this.mContext = context;
    this.mDataSource = dataSource;
    
    mDialog = ProgressDialog.show(context, "", mContext.getString(R.string.conversion), true);

    new ConversionTask().execute();
  }

  class ConversionTask extends AsyncTask<Void, Void, List<CardSet>> {


    @Override
    protected List<CardSet> doInBackground(Void... params) {

      List<CardSet> cardSets = new ArrayList<CardSet>();
      
      // Get all the file names
      String[] fileNames = mContext.fileList();

      for(String fileName : fileNames) {

        CardSet cardSet = mDataSource.createCardSet(fileName);
        int displayOrder = 1;

        FileInputStream fis;
        BufferedReader reader = null;

        try {

          fis =  mContext.openFileInput(fileName);
          reader = new BufferedReader(new InputStreamReader(fis));
          String card;

          while((card = reader.readLine()) != null) {

            if(null != card && !"".equals(card) && 3 <= card.length()) {

              String[] words = card.split(":");

              if(words.length == 2) {

                Card newCard = new Card();
                newCard.setQuestion(words[0]);
                newCard.setAnswer(words[1]);
                newCard.setCardSetId(cardSet.getId());
                newCard.setDisplayOrder(displayOrder);
                displayOrder += 1;
                mDataSource.createCard(newCard);
              }
            }
          }
        }
        catch(FileNotFoundException e) {

          Log.w(AppConstants.LOG_TAG, "FileNotFoundException: while reading words from file", e);
        }
        catch(IOException e) {

          Log.w(AppConstants.LOG_TAG, "IOException: while reading words from file", e);
        }
        finally {

          try {

            if(null != reader) {

              reader.close();
            }
          }
          catch (IOException e) {

            Log.e(AppConstants.LOG_TAG, "IOException", e);
          }
        }

        cardSet.setCardCount(displayOrder - 1);
        mDataSource.updateCardSet(cardSet);
        cardSets.add(cardSet);
        mContext.deleteFile(fileName);
      }
      
      return cardSets;
    }
    
    @Override
    protected void onPostExecute(List<CardSet> cardSets) {
      
      MainApplication mainApplication = (MainApplication)((Activity)mContext).getApplication();
      
      for(CardSet cardSet : cardSets) {
        
        mainApplication.doAction(ACTION_ADD_CARD_SET, cardSet);
      }
      
      mDialog.cancel();
    }
  }
}
Java Source Code List
