/*
* Copyright (c) 2013, Will Szumski
* Copyright (c) 2013, Doug Szumski
*
* This file is part of Cyclismo.
*
* Cyclismo 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.
*
* Cyclismo 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 Cyclismo. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Copyright 2012 Google Inc.
*
* 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.cowboycoders.cyclismo.io.backup;
import android.os.AsyncTask;
import android.util.Log;
import org.cowboycoders.cyclismo.R;
import org.cowboycoders.cyclismo.util.FileUtils;
import java.io.IOException;
/**
* AsyncTask to backup data to the SD card.
*
* @author Jimmy Shih
*/
public class BackupAsyncTask extends AsyncTask<Void, Integer, Boolean> {
private static final String TAG = BackupAsyncTask.class.getSimpleName();
private BackupActivity backupActivity;
private final ExternalFileBackup externalFileBackup;
// true if the AsyncTask result is success
private boolean success;
// true if the AsyncTask has completed
private boolean completed;
// message id to return to the activity
private int messageId;
/**
* Creates an AsyncTask.
*
* @param backupActivity the activity currently associated with this
* AsyncTask
*/
public BackupAsyncTask(BackupActivity backupActivity) {
this.backupActivity = backupActivity;
this.externalFileBackup = new ExternalFileBackup(backupActivity);
success = false;
completed = false;
messageId = R.string.external_storage_save_error;
}
/**
* Sets the current {@link BackupActivity} associated with this AyncTask.
*
* @param activity the current {@link BackupActivity}, can be null
*/
public void setActivity(BackupActivity activity) {
this.backupActivity = activity;
if (completed && backupActivity != null) {
backupActivity.onAsyncTaskCompleted(success, messageId);
}
}
@Override
protected void onPreExecute() {
if (backupActivity != null) {
backupActivity.showProgressDialog();
}
}
@Override
protected Boolean doInBackground(Void... params) {
if (!FileUtils.isSdCardAvailable()) {
messageId = R.string.external_storage_error_no_storage;
return false;
}
if (!externalFileBackup.isBackupsDirectoryAvailable(true)) {
messageId = R.string.external_storage_save_error_create_dir;
return false;
}
try {
externalFileBackup.writeToDefaultFile();
messageId = R.string.external_storage_save_success;
return true;
} catch (IOException e) {
Log.d(TAG, "IO exception", e);
return false;
}
}
@Override
protected void onPostExecute(Boolean result) {
success = result;
completed = true;
if (backupActivity != null) {
backupActivity.onAsyncTaskCompleted(success, messageId);
}
}
}