Android Open Source - SimpleReader Seria Helper

From Project

Back to project page SimpleReader.

License

The source code is released under:

Apache License

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Java Source Code

package com.dreamteam.app.commons;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OptionalDataException;
import java.io.Serializable;
import java.io.StreamCorruptedException;
/*from w w w  .j a v  a2 s.co m*/
import com.dreamteam.app.entity.ItemListEntity;


/**
 * @description 
 * @author zcloud
 * @date 2013/11/15
 */
public class SeriaHelper
{
  private static SeriaHelper helper;
  
  private SeriaHelper(){}
  
  public Serializable readObject(File file)
  {
    if(!file.exists())
      return null;
    FileInputStream fis = null;
    ObjectInputStream ois = null;
    
    try
    {
      fis = new FileInputStream(file);
      ois = new ObjectInputStream(fis);
      ItemListEntity ile = (ItemListEntity) ois.readObject();
      return ile;
    }
    catch(StreamCorruptedException e)
    {
      e.printStackTrace();
      return null;
    }
    catch(OptionalDataException e)
    {
      e.printStackTrace();
      return null;
    }
    catch(FileNotFoundException e)
    {
      e.printStackTrace();
      return null;
    }
    catch(IOException e)
    {
      e.printStackTrace();
      return null;
    }
    catch(ClassNotFoundException e)
    {
      e.printStackTrace();
      return null;
    }
    finally
    {
      if(fis != null)
      {
        try
        {
          fis.close();
          fis = null;
        }
        catch(IOException e)
        {
          e.printStackTrace();
        }
      }
      if(ois != null)
      {
        try
        {
          ois.close();
          ois = null;
        }
        catch(IOException e)
        {
          e.printStackTrace();
        }
      }
    }
  }
  
  /**
   * @param seria
   * @param file
   * @return
   * true:save successful
   * false:save failed
   */
  public void saveObject(Serializable seria, File file)
  {
    FileOutputStream fos = null;
    ObjectOutputStream oos = null;
    
    try
    {
      fos = new FileOutputStream(file);
      oos = new ObjectOutputStream(fos);
      oos.writeObject(seria);
    }
    catch(FileNotFoundException e)
    {
      e.printStackTrace();
    }
    catch(IOException e)
    {
      e.printStackTrace();
    }
    finally
    {
      if(fos != null)
      {
        try
        {
          fos.close();
          fos = null;
        }
        catch(IOException e)
        {
          e.printStackTrace();
        }
      }
      if(oos != null)
      {
        try
        {
          oos.flush();
          oos.close();
        }
        catch(IOException e)
        {
          e.printStackTrace();
        }
      }
    }
  }
  
  public static SeriaHelper newInstance()
  {
    if(helper == null)
    {
      helper = new SeriaHelper();
    }
    return helper;
  }
}

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