export the current database to the SDcard : SDCard « Hardware « Android

1. Android
2. Hardware
3. SDCard

export the current database to the SDcard

  

/*
 * Copyright 2010 NWSAlert authors.
 *
 * 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 com.googlecode.iqapps.IQNWSAlerts;

/**
 * 
 * @author Paul Kronenwetter <kronenpj@gmail.com>
 * @author Neil http://stackoverflow.com/users/319625/user319625
 */

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

import android.os.Environment;
import android.util.Log;

// Class to export the current database to the SDcard.
public class SDUtils {
  private static final String TAG = "SDUtils";

  public static boolean writeToSD(String outputFileName, String packageName,
      String data) {
    return writeToSD(outputFileName, packageName, data.getBytes());
  }

  public static boolean writeToSD(String outputFileName, String packageName,
      byte[] data) {
    // FIXME: Make this a separate thread.
    try {
      File sd = Environment.getExternalStorageDirectory();
      Log.d(TAG, "writeToSD: databaseName: " + outputFileName);

      if (sd.canWrite()) {
        String filePath = new String(packageName.substring(packageName
            .lastIndexOf('.') + 1));
        File extDBDir = new File(sd, filePath);
        File extDBFile = new File(sd, filePath + "/" + outputFileName);

        Log.d(TAG, "writeToSD: filePath: " + filePath);
        Log.d(TAG, "writeToSD: extDBFile: " + extDBFile);

        if (!extDBDir.exists()) {
          Log.d(TAG, "Creating directory: "
              + extDBDir.getAbsolutePath());
          if (!extDBDir.mkdir()) {
            Log.e(TAG, "Directory creation failed.");
          }
        } else {
          Log.d(TAG, "writeToSD: Directory creation skipped.");
        }

        try {
          Log.d(TAG, "writeToSD: Creating new file: "
              + extDBFile.getAbsolutePath());
          // extDBFile.delete();
          extDBFile.createNewFile();
        } catch (IOException e) {
          Log.d(TAG, "writeToSD: " + e.toString());
        } catch (SecurityException e) {
          Log.d(TAG, "writeToSD: " + e.toString());
        }

        // ByteBuffer src = ByteBuffer.wrap(data);
        // byte[] bSrc = src.array();
        // Log.d(TAG, "bSrc is " + bSrc.length + " bytes in size.");
        FileOutputStream fileOutStream = new FileOutputStream(extDBFile);
        // BufferedOutputStream bos = new BufferedOutputStream(
        // fileOutStream);

        // FileChannel dst = new
        // FileOutputStream(backupFile).getChannel();
        Log.d(TAG, "About to write to file.");
        fileOutStream.write(data);
        Log.d(TAG, "Wrote to file.");
        fileOutStream.flush();
        fileOutStream.close();
        Log.d(TAG, "Closed file.");

        extDBFile = new File(sd, filePath + "/" + outputFileName);
        if (!extDBFile.exists()) {
          Log.e(TAG, "Downloaded file doesn't exist.");
        }
        if (extDBFile.length() != data.length) {
          Log.e(TAG, "Downloaded file doesn't match size.");
        } else {
          Log
              .v(TAG, "File on SD card is size: "
                  + extDBFile.length());
        }

        return true;
      }
    } catch (Exception e) {
      Log.e(TAG, "WriteToSD threw exception: " + e.toString());
    }
    return false;
  }

  /**
   * 
   * @param filename
   */
  public static void makeReadOnly(String filename) {
    File file = new File(filename);
    if (!file.exists())
      return;
    file.setReadOnly();
  }
}

   
    
  

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