Android Open Source - Look Look Files Manager

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License

The source code is released under:

====================== LOOK! LICENSING TERMS ====================== look! is licensed under the BSD 3-Clause (also known as "BSD New" or "BSD Simplified"), as follows: Copyright (c) 2010-2012, Look...

Java Source Code

/**
*-----------------------------------------------------------------------------
* Copyright (c) 2012, Look! Development Team
* All rights reserved./*from w  w w  .ja v a  2  s  .c  om*/
*
* Distributed under the terms of the BSD Simplified License.
*
* The full license is in the LICENSE file, distributed with this software.
*-----------------------------------------------------------------------------
*/
package es.ucm.look.data.filesManager;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Environment;
import es.ucm.look.data.remote.ConfigNet;

/**
 * A file manager for accessing binary files remotely
 * 
 * @author Sergio
 *
 */
public class LookFilesManager {

  private static LookFilesManager instance;

  /**
   * Base directory
   */
  private File directory;

  private LookFilesManager() {
    directory = Environment.getExternalStorageDirectory();
  }

  /**
   * Method singleton to access a unique instance of LookFilesManager
   * @return
   */
  public static LookFilesManager getFileManager() {
    if (instance == null)
      instance = new LookFilesManager();
    return instance;
  }

  /**
   * Set the basis directory for the file manager
   * 
   * @param directory
   *            the basis directory
   */
  public void setDirectory(String directory) {
    File f = new File(directory);
    f.mkdirs();
    this.directory = f;
  }

  /**
   * Returns an input stream for a file
   * 
   * @param uriFile
   *            uri file
   * @return the input stream
   */
  public InputStream getInputStream(String uriFile) {
    File f = new File(directory, uriFile);
    try {
      return new FileInputStream(f);
    } catch (FileNotFoundException e) {
      e.printStackTrace();
      return null;
    }
  }

  /**
   * Returns the bitmap for the given file
   * 
   * @param uriFile the uri file
   * @return the bitmap
   */
  public Bitmap getImageBitmap(String uriFile) {
    Bitmap bm = null;

    File isFile = new File(directory, uriFile);
    if (isFile.exists()) {

      bm = BitmapFactory.decodeFile(isFile.getAbsolutePath());
    } else if ( ConfigNet.getInstance().isConnected() ){

      try {
        URL aURL = new URL(ConfigNet.getInstance().getFilesURL(uriFile));
        URLConnection conn = aURL.openConnection();
        conn.connect();
        InputStream is = conn.getInputStream();
        BufferedInputStream bis = new BufferedInputStream(is);
        bm = BitmapFactory.decodeStream(bis);

        // Save the image in the sd
        FileOutputStream out = new FileOutputStream(new File(directory, uriFile ));

        byte[] buffer = new byte[1024];
        int len;
        while ((len = is.read(buffer)) > 0) {
          out.write(buffer, 0, len);
        }
        is.close();

        bm.compress(Bitmap.CompressFormat.JPEG, 90, out);
        out.flush();
        out.close();

        bis.close();
        is.close();
      } catch (IOException e) {
        e.printStackTrace();
      }
    }
    return bm;
  }
}

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